Mitsubishi Electric PUMY-P112VKM3 Technical & Service Manual

City multi series split-type, heat pump air conditioners

Hide thumbs Also See for PUMY-P112VKM3:

Service manual (44 pages)

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

Table of Contents

Quick Links

Need help?

Do you have a question about the PUMY-P112VKM3 and is the answer not in the manual?

Questions and answers

Summary of Contents for Mitsubishi Electric PUMY-P112VKM3

Page 1: Table Of Contents
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS March 2017 No. OCH632 REVISED EDITION-A TECHNICAL & SERVICE MANUAL <Outdoor unit> [Service Ref.] [Model Name] PUMY-P112VKM3 PUMY-P112VKM3 Revision: • Modified the "Ratio of PUMY-P125VKM3 PUMY-P125VKM3 power input" graph for cool- ing in "4-2. CORRECTION...
Page 2: Safety Precaution
SAFETY PRECAUTION 1-1. CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Use a vacuum pump with a reverse flow check Use new refrigerant pipes. valve. Avoid using thin pipes. Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil, etc.
Page 3 [1] Cautions for service (1) Perform service after recovering the refrigerant left in unit completely. (2) Do not release refrigerant in the air. (3) After completing service, charge the cycle with specified amount of refrigerant. (4) If moisture or foreign matter might have entered the refrigerant piping during service, ensure to remove them. [2] Additional refrigerant charge When charging directly from cylinder (1) Check that cylinder for R410A on the market is a syphon type.
Page 4 Cautions for refrigerant piping work New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working pressure of R410A is 1.6 times higher than that of R22, their sizes of flared sections and flare nuts are different.
Page 5: Overview Of Units
OVERVIEW OF UNITS 2-1. UNIT CONSTRUCTION PUMY-P112VKM3(-BS) PUMY-P125VKM3(-BS) PUMY-P140VKM3(-BS) Outdoor unit PUMY-P112YKM(E)3(-BS) PUMY-P125YKM(E)3(-BS) PUMY-P140YKM(E)3(-BS) Capacity Type 15 to Type 140 Applicable 1 to 12 unit indoor unit Number of units 1 to 9 unit 1 to 10 unit 50 to 130% of outdoor unit capacity *2 *3...
Page 6 2-2. UNIT CONSTRUCTION (BRANCH BOX SYSTEM) PUMY-P125VKM3(-BS) PUMY-P140VKM3(-BS) PUMY-P112VKM3(-BS) PUMY-P125YKM(E)3(-BS) PUMY-P140YKM(E)3(-BS) PUMY-P112YKM(E)3(-BS) Outdoor unit Capacity Type 15 to Type 100 Applicable Number of units 2 to 8 units indoor unit Total system wide capacity* 19 to 130 % of outdoor unit capacity...
Page 7 2-3. UNIT CONSTRUCTION (MIXED SYSTEM) Outdoor unit PUMY-P112VKM3(-BS) PUMY-P125VKM3(-BS) PUMY-P140VKM3(-BS) PUMY-P112YKM(E)3(-BS) PUMY-P125YKM(E)3(-BS) PUMY-P140YKM(E)3(-BS) Capacity City multi indoor unit Type 15 to Type 140 Applicable Via branch box Type 15 to Type 100 indoor unit Via branch box Citymulti indoor Via branch box Citymulti indoor...
Page 8: Unit Specifications
2-4. UNIT SPECIFICATIONS (1) Outdoor Unit PUMY-P112VKM3(-BS) PUMY-P125VKM3(-BS) PUMY-P140VKM3(-BS) Service Ref. PUMY-P112YKM(E)3(-BS) PUMY-P125YKM(E)3(-BS) PUMY-P140YKM(E)3(-BS) Cooling (kW) 12.5 14.0 15.5 Capacity Heating (kW) 14.0 16.0 18.0 Compressor (kW) Cooling/Heating capacity indicates the maximum value at operation under the following condition. *Cooling Indoor : D.B.
Page 9 ■ When connecting Cylinder unit or Hydrobox Cooling DHW only ATW Heating only DHW + ATA Heating * ATW Heating + ATA Heating * Outlet water temperature — * 55: Max. 55: Max. 55: Max. 45 to 55: Max. −20 to 35: −20 to 21: Outdoor temperature —...
Page 10: Specifications
Motor output 0.06+0.06 External static press. Compressor Type × Quantity Scroll hermetic compressor x 1 Manufacture Mitsubishi Electric Corporation Starting method Inverter Capacity control % Cooling 26 to 100 Cooling 24 to 100 Cooling 21 to 100 Heating 20 to 100...
Page 11 Motor output 0.06+0.06 External static press. Compressor Type x Quantity Scroll hermetic compressor × 1 Manufacture Mitsubishi Electric Corporation Starting method Inverter Capacity control % Cooling 26 to 100 Cooling 24 to100 Cooling 21 to 100 Heating 20 to 100...
Page 12 Motor output 0.06+0.06 External static press. Compressor Type × Quantity Scroll hermetic compressor × 1 Manufacture Mitsubishi Electric Corporation Starting method Inverter Capacity control % Cooling 26 to 100 Cooling 24 to 100 Cooling 21 to 100 Heating 20 to 100...
Page 13: Data
DATA 4-1. SELECTION OF COOLING/HEATING UNITS <Cooling> Design Condition Outdoor Design Dry Bulb Temperature 40ºC Total Cooling Load 9.0 kW Room1 Indoor Design Dry Bulb Temperature 27ºC Indoor Design Wet Bulb Temperature 20ºC Cooling Load 4.0 kW Room2 Indoor Design Dry Bulb Temperature 24ºC Indoor Design Wet Bulb Temperature 18ºC...
Page 14 <Heating> Design Condition Outdoor Design Wet Bulb Temperature 2ºC Total Heating Load 10.3 kW Room1 Indoor Design Dry Bulb Temperature 21ºC 4.8 kW Heating Load Room2 Indoor Design Dry Bulb Temperature 23ºC Heating Load 5.5 kW <Other> 100 m Indoor/Outdoor Equivalent Piping Length Capacity of indoor unit Model Number Model 15...
Page 15 4-2. CORRECTING BY TEMPERATURE CITY MULTI could have varied capacity at different designing temperature. Using the nominal cooling/heating capacity value and the ratio below, the capacity can be observed at various temperature. <Cooling> Figure 7 Indoor unit temperature correction To be used to correct indoor unit capacity only PUMY P112 P125...
Page 16 <Heating> Figure 9 Indoor unit temperature correction To be used to correct indoor unit capacity only PUMY P112 P125 P140 Nominal 14.0 16.0 18.0 heating BTU/h 47,768 54,592 61,416 capacity Input 3.04 3.74 4.47 Indoor Temperature [°CD.B.] Figure 10 Outdoor unit temperature correction To be used to correct outdoor unit capacity only 20°C D.B -5.0...
Page 17 4-3. STANDARD OPERATION DATA (REFERENCE DATA) PUMY-P112VKM3(-BS) PUMY-P125VKM3(-BS) PUMY-P140VKM3(-BS) Operation PUMY-P112YKM3(-BS) PUMY-P125YKM3(-BS) PUMY-P140YKM3(-BS) PUMY-P112YKME3(-BS) PUMY-P125YKME3(-BS) PUMY-P140YKME3(-BS) Indoor Ambient 27°C/19°C 20°C/— 27°C/19°C 20°C/— 27°C/19°C 20°C/— temperature Outdoor 35°C 7°C/6°C 35°C 7°C/6°C 35°C 7°C/6°C No. of connected units Unit Indoor unit No. of units in operation Model —...
Page 18 4-4. STANDARD CAPACITY DIAGRAM Before calculating the sum of total capacity of indoor units, please convert the value into the kW model capacity following the formula on "4-1-1. Method for obtaining system cooling and heating capacity". 4-4-1. PUMY-P112VKM3(-BS) PUMY-P112YKM(E)3(-BS) <cooling> 16.0 14.0...
Page 19 PUMY-P112VKM 4-4-2. PUMY-P112VKM3(-BS) PUMY-P112YKM(E)3(-BS) <heating> 16.0 14.0 12.0 10.0 10.0 12.0 14.0 16.0 18.0 200. Total capacity of indoor units(kW) 10.0 12.0 14.0 16.0 18.0 20.0 Total capacity of indoor units(kW) 20.0 V-Type 15.0 220V 230V 240V 10.0 10.0 12.0 14.0...
Page 20 4-4-3. PUMY-P125VKM3(-BS) PUMY-P125YKM(E)3(-BS) <cooling> Before calculating the sum of total capacity of indoor units, please convert the value into the kW model capacity following the formula on "4-1-1. Method for obtaining system cooling and heating capacity". 18.0 16.0 14.0 12.0 10.0 10.0 12.0...
Page 21 4-4-4. PUMY-P125VKM3(-BS) PUMY-P125YKM(E)3(-BS) <heating> 18.0 16.0 14.0 12.0 10.0 10.0 12.0 14.0 16.0 18.0 20.0 Total capacity of indoor units(kW) 10.0 12.0 14.0 16.0 18.0 20.0 Total capacity of indoor units(kW) 20.0 V-Type 15.0 220V 230V 240V 10.0 10.0 12.0 14.0 16.0 18.0...
Page 22 4-4-5. PUMY-P140VKM3(-BS) PUMY-P140YKM(E)3(-BS) <cooling> Before calculating the sum of total capacity of indoor units, please convert the value into the kW model capacity following the formula on "4-1-1. Method for obtaining system cooling and heating capacity". 20.0 18.0 16.0 14.0 12.0 10.0 10.0...
Page 23 4-4-6. PUMY-P140VKM3(-BS) PUMY-P140YKM(E)3(-BS) <heating> 20.0 18.0 16.0 14.0 12.0 10.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0 Total capacity of indoor units(kW) 10.0 12.0 14.0 16.0 18.0 20.0 22.0 Total capacity of indoor units(kW) 25.0 V-Type 20.0 220V 230V 15.0 240V 10.0 10.0...
Page 24 (2) During heating, find the equivalent piping length, and find the capacity ratio corresponding to standard piping length from Figure 14. Then multiply by the heating capacity from Figure 9 and 10 in "4-2. CORRECTION BY TEMPERATURE" to obtain the actual capacity. (1) Capacity Correction Curve Figure 11 PUMY-P112VKM3(-BS) PUMY-P112YKM(E)3(-BS) <Cooling> Total capacity of indoor unit 1.00 0.95...
Page 25 Figure 13 PUMY-P140VKM3(-BS) PUMY-P140YKM(E)3(-BS) <Cooling> Total capacity of indoor unit 1.00 0.95 0.90 0.85 0.80 0.75 11.6 0.70 15.5 0.65 20.2 0.60 0.55 0.50 Piping equivalent length (m) Figure 14 PUMY-P112/125/140VKM3(-BS) <Heating> PUMY-P112/125/140YKM3(-BS) <Heating> PUMY-P112/125/140YKME3(-BS) <Heating> 1.00 0.95 0.90 0.85 0.80 0.75 0.70...
Page 26 4-6. NOISE CRITERION CURVES PUMY-P125VKM3(-BS) MODE SPL(dB) LINE PUMY-P112VKM3(-BS) MODE SPL(dB) LINE PUMY-P125YKM3(-BS) COOLING PUMY-P112YKM3(-BS) COOLING HEATING PUMY-P125YKME3(-BS) PUMY-P112YKME3(-BS) HEATING NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE THRESHOLD OF THRESHOLD OF HEARING FOR HEARING FOR...
Page 27: Outlines And Dimensions
OUTLINES AND DIMENSIONS PUMY-P112VKM3 PUMY-P125VKM3 PUMY-P140VKM3 PUMY-P112VKM3-BS PUMY-P125VKM3-BS PUMY-P140VKM3-BS Unit: mm OCH632A...
Page 28 PUMY-P112YKM3 PUMY-P125YKM3 PUMY-P140YKM3 PUMY-P112YKM3-BS PUMY-P125YKM3-BS PUMY-P140YKM3-BS PUMY-P112YKME3 PUMY-P125YKME3 PUMY-P140YKME3 PUMY-P112YKME3-BS PUMY-P125YKME3-BS PUMY-P140YKME3-BS Unit: mm OCH632A...
Page 29: Wiring Diagram
WIRING DIAGRAM PUMY-P112VKM3 PUMY-P125VKM3 PUMY-P140VKM3 PUMY-P112VKM3-BS PUMY-P125VKM3-BS PUMY-P140VKM3-BS OCH632A...
Page 30 PUMY-P112YKM3 PUMY-P125YKM3 PUMY-P140YKM3 PUMY-P112YKM3-BS PUMY-P125YKM3-BS PUMY-P140YKM3-BS OCH632A...
Page 31 PUMY-P112YKME3 PUMY-P125YKME3 PUMY-P140YKME3 PUMY-P112YKME3-BS PUMY-P125YKME3-BS PUMY-P140YKME3-BS OCH632A...
Page 32: Necessary Conditions For System Construction
NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION 7-1. TRANSMISSION SYSTEM SETUP OCH632A...
Page 33 7-2. Special Function Operation and Settings for M-NET Remote Controller (M-NET remote controller cannot be connected with a refrigerant system which includes branch box.) • It is necessary to perform “group settings” and “paired settings” at making group settings of different refrigerant systems (multiple outdoor unit).
Page 34 (2) Address check: Refer to section (1) regarding address entry. a) In making group settings: • Turn off the remote controller: Press the remote controller's ON/OFF button to stop operation (the indicator light will go off). • Locate the indoor unit address display mode: Press the FILTER and k buttons on the remote controller simultaneously and hold for 2 seconds. • Display indoor unit address: The entered indoor units address and type will be displayed each time the button is pressed. * When 1 entry is made, only 1 address will be displayed no matter how many times the w button is pressed. • Returning to the normal mode after completing check: Simultaneously press the FILTER and k buttons on the remote controller and hold for 2 seconds to return to the normal mode.
Page 35 7-3. REFRIGERANT SYSTEM DIAGRAM PUMY-P112VKM3(-BS) PUMY-P125VKM3(-BS) PUMY-P140VKM3(-BS) PUMY-P112YKM3(-BS) PUMY-P125YKM3(-BS) PUMY-P140YKM3(-BS) PUMY-P112YKME3(-BS) PUMY-P125YKME3(-BS) PUMY-P140YKME3(-BS) Thermistor (TH7) Check valve <Ambient> <High pressure> Service port 4-way valve Strainer Refrigerant Gas pipe Ball valve High pressure Solenoid Oil separator switch (63H) valve (SV1) Distributor...
Page 36 7-4. REFRIGERANT SYSTEM DIAGRAM (WHEN USING BRANCH BOX) Condenser / evaporator temperature thermistor Room temperature thermistor (TH1 or RT11) (TH5 or RT12) Check valve Thermistor (TH7) <High pressure> <Ambient> Service port 4-way valve Strainer Ball valve High pressure Solenoid Oil separator switch (63H) valve (SV1) Distributor...
Page 37 ■ Pipe size (Branch box-Indoor unit) For M or S series Indoor unit Indoor unit type (kW) Liquid [6.35 [6.35 [6.35 [6.35 [6.35 [6.35 [6.35 [6.35 [6.35 [9.52 Pipe size (mm) [9.52 [9.52 [9.52 [9.52 [9.52 [9.52 [9.52 [12.7 [15.88 [15.88 ■ Pipe size (Branch box-Indoor unit) For P series Indoor unit Indoor unit type (kW) Liquid...
Page 38: System Control
7-5. SYSTEM CONTROL 7-5-1. Example for the System • Example for wiring control cables, wiring method and address setting, permissible lengths, and the prohibited items are listed in the standard system with detailed explanation. A. Example of a M-NET remote controller system (address setting is necessary.) Example of wiring control cables Wiring Method and Address Setting a. Use feed wiring to connect terminals M1 and M2 on 1.
Page 39 • Name, Symbol and the Maximum Remote controller Units for Connection Name Symbol Maximum units for connection Outdoor unit — M-NET control M-IC 1 OC unit can be connected to 1 to 9 (P112)/1 to 10 (P125)/1 to 12 (P140) M-IC units Indoor unit M-NET remote M-NET RC Maximum 2 M-NET RC for 1 indoor unit, Maximum 12 M-NET RC for 1 OC...
Page 40 B. Example of a group operation system with 2 or more outdoor units and a M-NET remote controller. (Address settings are necessary.) (51) M-IC M-IC M-IC (01) (02) (05) (06) M1 M2 S M1 M2 S M1 M2 S M1 M2 S M1 M2 S M1 M2 S (105)
Page 41 • Name, Symbol, and the Maximum Units for Connection • Longest length via outdoor units : L [ 500 meters (1.25 mm²) • Longest transmission cable length : L [ 200 meters (1.25 mm²) • M-NET Remote controller cable length : R [ 10 m (0.5 to 1.25 mm²) If the length exceeds 10 m, use a 1.25 mm² shielded wire. The length of this section (L should be included in the calculation of the maximum length and overall length.
Page 42 C. Example of a MA remote controller system (address setting is not necessary.) NOTE : In the case of same group operation, need to set the address that is only main M-NET control indoor unit. Example of wiring control cables Wiring Method and Address Setting 1.
Page 43 Permissible Lengths Prohibited items The MA remote controller and the Longest transmission cable length: M-NET remote controller cannot be [ 200 m (1.25 mm²) used together with the M-NET con- MA remote controller cable length: trol indoor unit of the same group. [ 200 m (0.3 to 1.25 mm²) (00) M-IC...
Page 44 D. Example of a group operation with 2 or more outdoor units and a MA remote controller. (Address settings are necessary.) M-IC M-IC M-IC M-IC (51) (01) (02) (05) (06) TB15 TB15 TB15 TB15 M1 M2 S M1 M2 S M1 M2 S M1 M2 S M1 M2 S...
Page 45 • Name, Symbol, and the Maximum Units for Connection Longest length via outdoor unit (M-NET cable): L and L [ 500 m (1.25 E more) Longest transmission cable length (M-NET cable): L and L and L and L [ 200 m (1.25 E or more) MA Remote controller cable length: m1 and m1+m2+m3 and m1+m2+m3+m4 [ 200 m (0.3 to 1.25 E) (51) M-IC...
Page 46 E. Example of a system using Branch Box and A-Control indoor unit TB3A TB5/TB15 Branch Box A-IC MA-RC (01) (51) TB3B TB5/TB15 M1 M2 S M1 M2 S A-IC MA-RC (02) TB3C TB5/TB15 A-IC MA-RC (03) (01) TB3D A-IC WL-RC (04) TB3E A-IC...
Page 47 • Name, Symbol, and the Maximum Units for Connection Longest length via outdoor unit (M-NET cable): L [ 500 m (1.25 E or more)] Longest transmission cable length (M-NET cable): L [ 200 m (1.25 E or more) ] Longest transmission cable length (A-Control cable): L [ 25 m (1.5 E) ] Remote controller cable length: m1 [ 200 m (0.3 to 1.25 E) ] TB3A...
Page 48 F. Example of a system using Branch Box, A-Control indoor unit, and M-NET Control indoor unit. TB3A TB5/TB15 Branch Box A-IC MA-RC (01) (51) TB3B TB5/TB15 M1 M2 S M1 M2 S A-IC MA-RC (02) TB3C TB5/TB15 A-IC MA-RC (03) TB3D A-IC WL-RC...
Page 49 • Name, Symbol, and the Maximum Units for Connection Longest length via outdoor unit (M-NET cable): L [500 m (1.25 E or more)] Longest transmission cable length (M-NET cable): L and L [200 m (1.25 E or more) ] Longest transmission cable length (A-Control cable): L [25 m (1.5 E) ] Remote controller cable length: m1 [200 m (0.3 to 1.25 E) ] TB3A...
Page 50: Troubleshooting
TROUBLESHOOTING 8-1. CHECK POINTS FOR TEST RUN 8-1-1. Procedures before test run (1) Before a test run, make sure that the following work is completed. • Installation related : Make sure that the panel of cassette type and electrical wiring are done. Otherwise electrical functions like auto vane will not operate normally. • Piping related : Perform leakage test of refrigerant and drain piping.
Page 51 8-1-1-2. Test run for wired remote controller <PAR-31MAA> <PAR-32MAA> MENU RETURN SELECT ON/OFF Function buttons Select "Service" from the Main menu, and press the button. Test run Input maintenance info. Function setting Check Self check Select "Test run" with the F1 or F2 button, and press the button.
Page 52 8-1-2. Countermeasures for Error During Test Run • If a problem occurs during test run, a code number will appear on the remote controller (or LED on the outdoor unit), and the air conditioning system will automatically cease operating. Determine the nature of the abnormality and apply corrective measures. Detected Unit Check Check Remarks code code Trouble Remote Indoor Outdoor (2 digits) (4 digits) Controller Outdoor unit outdoor multi controller circuit board 0403...
Page 53: Serial Communication Error
Check code Serial communication error 0403 (Ed) Abnormal points and detection methods Causes and check points Abnormal if serial communication between the outdoor multi controller Wire breakage or contact failure of connector CN2 or circuit board and outdoor power circuit board is defective. Malfunction of communication circuit to power circuit board on outdoor multi controller circuit board Malfunction of communication circuit on outdoor...
Page 54 Check code Compressor temperature trouble 1102 (U2) Chart 1 of 2 Abnormal points and detection methods Causes and check points (1) Abnormal if TH4 falls into following temperature conditions; Malfunction of stop valve Over-heated compressor operation caused by ●exceeds 110 [230°F] continuously for 5 minutes shortage of refrigerant ●exceeds 125 [257°F] Defective thermistor...
Page 55 Check code Compressor temperature trouble 1102 (U2) Chart 2 of 2 ●Diagnosis of defectives Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy Continued from the previous page Disconnect the thermistor wiring to check the resistance. Is there a resistance detected? Replace the thermistor.
Page 56 Check code High pressure trouble 1302 (UE) Chart 1 of 4 Abnormal points and detection methods Causes and check points (1) High pressure abnormality (63H operation) Defective operation of stop valve (not fully open) Abnormal if 63H operates(*) during compressor operation. (* 4.15 MPaG Clogged or broken pipe [602 PSIG]) Malfunction or locked outdoor fan motor...
Page 57 Check code High pressure trouble 1302 (UE) Chart 2 of 4 ●Diagnosis of defectives Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy Continued from the previous page Is the indoor unit filter clogged? Clean the filter. (Clogged filter) (No clog) Is there dirt on the indoor heat Wash the indoor heat exchanger.
Page 58 Check code High pressure trouble 1302 (UE) Chart 3 of 4 ●Diagnosis of defectives Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy Continued from the previous page Is there a resistance detected? Replace the TH7. Disconnect the indoor LEV wiring to check the resistance.
Page 59 Check code High pressure trouble 1302 (UE) Chart 4 of 4 ●Diagnosis of defectives Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy Continued from the previous page Is there a resistance detected? Replace the SV1. Is the connector for outdoor multi controller circuit board 63H Reconnect the connector or connect it tightly.
Page 60 Check code Superheat due to low discharge temperature trouble 1500 (U7) Chart 1 of 2 Abnormal points and detection methods Causes and check points Abnormal if the discharge superheat is continuously detected −15 [−27°F](*) or Disconnection or loose connection of TH4 less for 5 minutes even though the indoor LEV has minimum open pulse Defective holder of TH4 after the compressor starts operating for 10 minutes.
Page 61 Check code Superheat due to low discharge temperature trouble 1500 (U7) Chart 2 of 2 ●Diagnosis of defectives Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy Continued from the previous page Is there a resistance detected? Replace the indoor LEV.
Page 62 Check code Refrigerant shortage trouble 1501 (U2) Chart 1 of 2 Abnormal points and detection methods Causes and check points (1) Abnormal when all of the following conditions are satisfied for 15 Defective operation of stop valve (not fully open) consecutive minutes: Defective thermistor 1. The compressor is operating in HEAT mode. Defective outdoor multi controller circuit board 2.
Page 63 Check code Refrigerant shortage trouble 1501 (U2) Chart 2 of 2 ●Diagnosis of defectives Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy Continued from the previous page Is there a resistance detected? Replace the thermistor. Check the 63HS voltage.
Page 64 Check code Closed valve in cooling mode 1501 (U2) Abnormal points and detection methods Causes and check points Abnormal if stop valve is closed during cooling operation. Outdoor liquid/gas valve is closed. Malfunction of outdoor LEV (LEV1)(blockage) Abnormal when both of the following temperature conditions are satisfied for 20 minutes or more during cooling operation. 1. TH22j−TH21j ] −2°C [−3.6_F] 2. TH23j−TH21j ] −2°C [−3.6_F] TH21: Indoor intake temperature thermistor (RT11 or TH1)
Page 65: Indoor Hex Freezing Protection
Check code Indoor HEX freezing protection 1503 (P6) Abnormal points and detection methods Causes and check points The purpose of the check code is to prevent indoor unit from freezing or Wrong piping connection between indoor unit and dew condensation which is caused when a refrigerant keeps flowing into branch box the unit in STOP.
Page 66: Way Valve Trouble In Heating Mode
Check code 4-way valve trouble in heating mode 1508 (EF) Abnormal points and detection methods Causes and check points Abnormal if 4-way valve does not operate during heating operation. 4-way valve failure Disconnection or failure of 4-way valve coil Abnormal when any of the following temperature conditions is satisfied for Clogged drain pipe 3 min.
Page 67 Check code Compressor current interruption (Locked compressor) 4100 (UF) Chart 1 of 2 Abnormal points and detection methods Causes and check points Abnormal if overcurrent of DC bus or compressor is detected before 30 Closed stop valve seconds after the compressor starts operating. Decrease of power supply voltage Looseness, disconnection, or wrong phase of compressor wiring connection...
Page 68 Check code Compressor current interruption (Locked compressor) 4100 (UF) Chart 2 of 2 ●Diagnosis of defectives Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy Continued from the previous page Connect the compressor wiring (U, V and Are they connected properly? W phase) properly, then turn the power back ON.
Page 69 Check code Compressor overcurrent interruption 4210 (UP) Chart 1 of 2 Abnormal points and detection methods Causes and check points Abnormal if overcurrent of DC bus or compressor is detected after 30 Closed outdoor stop valve seconds since the compressor starts operating. Decrease of power supply voltage Looseness, disconnection, or wrong phase of compressor wiring connection...
Page 70 Check code Compressor overcurrent interruption 4210 (UP) Chart 2 of 2 ●Diagnosis of defectives Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy Continued from the previous page Connect the compressor wiring (U, V and W phase) properly, then turn the power Are they connected properly? back ON.
Page 71 Check code Voltage shortage/overvoltage/PAM error/L1open phase/primary 4220 current sensor error/power synchronization signal error (U9) Chart 1 of 2 Abnormal points and detection methods Causes and check points Abnormal if any of following symptoms are detected; Decrease/increase of power supply voltage LI open-phase (Y model only) ●Decrease of DC bus voltage to 200 V (V model), 350 V (Y model) Primary current sensor failure...
Page 72 Check code Voltage shortage/overvoltage/PAM error/L1open phase/primary 4220 current sensor error/power synchronization signal error (U9) Chart 2 of 2 ●Diagnosis of defectives Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. The black square (■) indicates a switch position. Diagnosis Remedy Continued from the previous page Is the outdoor unit Replace the outdoor power circuit board V model...
Page 73 Check code Heat sink temperature trouble 4230 (U5) Abnormal points and detection methods Causes and check points Abnormal if TH8 detects a temperature outside the specified range during Blocked outdoor fan compressor operation. Malfunction of outdoor fan motor Blocked airflow path Thermistor <Heat sink> TH8: Rise of ambient temperature Characteristic defect of thermistor Malfunction of input circuit on outdoor power circuit board Malfunction of outdoor fan driving circuit ●Diagnosis of defectives...
Page 74 Check code Power module trouble 4250 (U6) Abnormal points and detection methods Causes and check points Abnormal if both of the following conditions are satisfied: Short-circuit caused by looseness or disconnection of compressor wiring 1. Overcurrent of DC bus or compressor is detected during compressor operation. Defective compressor 2.
Page 75 Check code Fan trouble (Outdoor unit) 4400 (U8) Abnormal points and detection methods Causes and check points Abnormal if no rotational frequency is detected, or detected a value Malfunction of fan motor outside the specified range during fan motor operation. Disconnection of CNF connector Defective outdoor multi controller circuit board ●Diagnosis of defectives Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.
Page 76 Check code Compressor temperature thermistor (TH4) open/short 5101 (U3) <Detected in outdoor unit> Abnormal points and detection methods Causes and check points Abnormal if TH4 detects to be open/short. Disconnection or contact failure of connectors (The open/short detection is disabled for 10 minutes after compressor Characteristic defect of thermistor starts, during defrosting operation, or for 10 minutes after returning from Defective outdoor multi controller circuit board...
Page 77 Check code Suction pipe temperature thermistor (TH6) open/short 5102 (U4) <Detected in outdoor unit> Abnormal points and detection methods Causes and check points Abnormal if TH6 detects to be open/short. Disconnection or contact failure of connectors (The open/short detection is disabled during 10 seconds to 10 minutes Characteristic defect of thermistor after compressor starts, during defrosting operation, or for 10 minutes after Defective outdoor multi controller circuit board...
Page 78 Check code Outdoor liquid pipe temperature thermistor (TH3) open/short 5105 (U4) Abnormal points and detection methods Causes and check points Abnormal if TH3 detects to be open/short. Disconnection or contact failure of connectors (The open/short detection is disabled during 10 seconds to 10 minutes Characteristic defect of thermistor after compressor starts, during defrosting operation, or for 10 minutes after Defective outdoor multi controller circuit board...
Page 79 Check code Ambient temperature thermistor (TH7) open/short 5106 (U4) Abnormal points and detection methods Causes and check points Abnormal if TH7 detects to be open/short Disconnection or contact failure of connectors Open: −40 [−40°F] or less Characteristic defect of thermistor Short: 90 [162°F] or more TH7: Thermistor <Ambient>...
Page 80 Check code HIC pipe temperature thermistor (TH2) open/short 5109 (U4) Abnormal points and detection methods Causes and check points Abnormal if TH2 detects to be open/short. Disconnection or contact failure of connectors Open: −40 [−40°F] or less Characteristic defect of thermistor Short: 90 [162°F] or more TH2: Thermistor <HIC pipe>...
Page 81 Check code Heat sink temperature thermistor(TH8) open/short 5110 (U4) Abnormal points and detection methods Causes and check points Abnormal if TH8 (Internal thermistor) detects to be open/short. Disconnection or contact failure of connectors P112/125/140V model <Internal thermistor> Characteristic defect of thermistor Open: 170.3 [338.5°F] or more Defective outdoor multi controller circuit board Short: −35.1 [−31.2°F] or less...
Page 82 Check code High pressure sensor (63HS) trouble 5201 (F5) Abnormal points and detection methods Causes and check points When the detected pressure in the high pressure sensor is 1kgf/F or Defective high pressure sensor less during operation, the compressor stops operation and enters into Decrease of internal pressure caused by gas an anti-restart mode for 3 minutes.
Page 83 Check code Low pressure sensor (63LS) trouble 5202 (F3) Abnormal points and detection methods Causes and check points When the detected pressure in the low pressure sensor is −2.3kgf/F Defective low pressure sensor or less, or 23.1kgf/F or more during operation, the compressor stops Decrease of internal pressure caused by gas operation with a check code <5202>.
Page 84 Check code Primary current error 5300 (UH) Abnormal points and detection methods Causes and check points Abnormal if any of the following conditions is detected: Decrease/trouble of power supply voltage 1 Primary current sensor detects any of the following conditions (single Disconnection of compressor wiring phase unit only): Current sensor trouble on outdoor power circuit...
Page 85: Duplex Address Error
Check code Duplex address error 6600 (A0) Abnormal points and detection methods Causes and check points Abnormal if 2 or more units with the same address are existing. There are 2 units or more with the same address in their controller among outdoor unit, indoor unit, Fresh Master, Lossnay or remote controller Noise interference on indoor/outdoor connectors ●Diagnosis of defectives...
Page 86 Check code Transmission processor hardware error 6602 (A2) Abnormal points and detection methods Causes and check points Abnormal if the transmission line shows "1" although the transmission A transmitting data collision occurred because of a processor transmitted "0". wiring work or polarity change has performed while the power is ON on either of the indoor/outdoor unit, Fresh Master or Lossnay Malfunction of transmitting circuit on transmission...
Page 87: Transmission Bus Busy Error
Check code Transmission bus BUSY error 6603 (A3) Abnormal points and detection methods Causes and check points Over error by collision The transmission processor is unable to transmit due Abnormal if no-transmission status caused by a transmitting data to a short-cycle voltage such as noise is mixed on collision is consecutive for 8 to 10 minutes.
Page 88: Signal Communication Error With Transmission Processor
Check code Signal communication error with transmission processor 6606 (A6) Abnormal points and detection methods Causes and check points Abnormal if the data of unit/transmission processor were not normally Accidental disturbance such as noise or lightning transmitted. surge Hardware malfunction of transmission processor Abnormal if the address transmission from the unit processor was not normally transmitted.
Page 89 Check code No ACK error 6607 (A7) Chart 1 of 4 Abnormal points and detection methods Causes and check points Represents a common error detection The previous address unit does not exist since An abnormality detected by the sending side controller when receiving the address switch was changed while in electric no ACK from the receiving side, though signal was once sent.
Page 90 Check code No ACK error 6607 (A7) Chart 2 of 4 Abnormal points and detection methods Causes and check points The cause of displayed address and attribute is on the Fresh Master While the indoor unit is operating with multi side refrigerant system Fresh Master, an abnormality An abnormality detected by the indoor unit if receiving no ACK when...
Page 91 Check code No ACK error 6607 (A7) Chart 3 of 4 ●Diagnosis of defectives Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy Procedure 1: Turn the power OFF of indoor/outdoor unit, Fresh Master, Lossnay and remote controller simultaneously for 2 minutes or more, then turn the power back ON.
Page 92 Check code No ACK error 6607 (A7) Chart 4 of 4 ●Diagnosis of defectives Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy Continued from the previous page Apply the correct kind of transmission line, Is the correct kind of transmission then perform the procedure 1.
Page 93: No Response Frame Error
Check code No response frame error 6608 (A8) Abnormal points and detection methods Causes and check points Abnormal if receiving no response command while already received ACK. Continuous failure of transmission due to noise, etc The sending side searches the error in 30 seconds interval for 6 times Decline of transmission voltage/signal caused by continuously.
Page 94 Check code MA communication receive error 6831, 6834 (E0/E4) Chart 1 of 2 Abnormal points and detection methods Causes and check points Detected in remote controller or indoor unit: Contact failure of remote controller wirings Irregular Wiring When the main or sub remote controller cannot receive signal from (A wiring length, number of connecting remote indoor unit which has the "0"...
Page 95 Check code MA communication receive error 6831, 6834 (E3/E5) Chart 2 of 2 ●Diagnosis of defectives Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards Diagnosis Remedy Continued from the previous page Refer to the chapter "Electrical Work".
Page 96 Check code MA communication send error 6832 6833 (EF) Chart 1 of 2 Abnormal points and detection methods Causes and check points Detected in remote controller or indoor unit. There are 2 remote controllers set as main. Malfunction of remote controller sending/receiving circuit Malfunction of sending/receiving circuit on indoor controller board...
Page 97 Check code MA communication send error 6832 6833 (EF) Chart 2 of 2 ●Diagnosis of defectives Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards Diagnosis Remedy Continued from the previous page Refer to the chapter "Electrical Work".
Page 98: Total Capacity Error
Check code Total capacity error 7100 (EF) Abnormal points and detection methods Causes and check points When the total capacity of connected indoor units exceeds the specified The total capacity of connected indoor units capacity (130% of the outdoor unit capacity), a check code <7100> is exceeds the specified capacity. (The total codes of displayed. indoor units excluding PWFY unit, Cylinder unit, and Hydrobox.
Page 99: Capacity Code Error
Check code Capacity code error 7101 (EF) Abnormal points and detection methods Causes and check points When a connected indoor unit is incompatible, a check code <7101> is The model name of connected indoor unit (model code) displayed. is read as incompatible. The connectable indoor units are: ·...
Page 100: Connecting Excessive Number Of Units And Branch Boxes
Check code Connecting excessive number of units 7102 and branch boxes (EF) Abnormal points and detection methods Causes and check points When the connected indoor unit exceeds the limit, a check code <7102> is Connecting more indoor units and branch boxes than displayed.
Page 101: Address Setting Error
Check code Address setting error 7105 (EF) Chart 1 of 2 Abnormal points and detection methods Causes and check points The address setting of connected unit is wrong. There is a unit without correct address setting in the range specified in "7-5. SYSTEM CONTROL". ●Diagnosis of defectives Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.
Page 102 Check code Address setting error 7105 (EF) Chart 2 of 2 ●Diagnosis of defectives Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards. Diagnosis Remedy <M-NET RC (main)> Check whether the M-NET RC (main) address is set in 000, or in the range of 101 to 150.
Page 103 Check code Incompatible unit combination error 7130 (EF) Abnormal points and detection methods Causes and check points When the connected indoor unit is not connectable with the outdoor unit, Connecting indoor unit(s) which is not authorized to the outdoor unit detects the error at start-up. connect to the outdoor unit.
Page 104: Remote Controller Diagnosis
8-2. REMOTE CONTROLLER DIAGNOSIS · For M-NET remote controller system If the air conditioner cannot be operated from the remote controller, diagnose the remote controller as explained below. First, check that the power-on indicator is lit. If the correct voltage (12 V DC) is not supplied to the remote controller, the indicator will not light.
Page 105 · For MA remote controller system Select "Service" from the Main menu, and press the button. Maintenance password Remote controller check Function setting Select "Remote controller check" with the F1 or F2 button, and press button. Select "Remote controller check" from the Service menu, and press Remote controller check button to start the remote controller check and see the check re- sults.
Page 106 8-3. REMOTE CONTROLLER TROUBLE 1Hr. CENTRALLY CONTROLLED ON OFF °C CLOCK CHECK FILTER CHECK MODE °C TEST RUN STAND BY “ ” Indicator: appears when current is carried. ERROR CODE NOT AVAILABLE FUNCTION DEFROST TEMP. ON/OFF FILTER CHECK TEST TIMER SET (M-NET Remote controller) (1) For M-NET remote controller systems Symptom or inspection code...
Page 107 8-4. THE FOLLOWING SYMPTOM DO NOT REPRESENT TROUBLE (EMERGENCY) Symptom Display of remote controller CAUSE "Cooling (Heating)" blinks The indoor unit cannot cool (heat) if other indoor units are heating Even the cooling (heating) operation selection button (Cooling). is pressed, the indoor unit cannot be operated.
Page 108 8-5. INTERNAL SWITCH FUNCTION TABLE PUMY-P112/125/140VKM3(-BS) PUMY-P112/125/140YKM3(-BS) PUMY-P112/125/140YKME3(-BS) ■ The black square ( ) indicates a switch position. OCH632A...
Page 109 ■ The black square ( ) indicates a switch position. OCH632A...
Page 110 8-6. OUTDOOR UNIT INPUT/OUTPUT CONNECTOR State (CN51) A Distant control board E Lamp power supply B Relay circuit F Procure locally C External output adapter (PAC-SA88HA-E) G Max. 10m CN51 D Outdoor unit control board : Error display lamp : Compressor operation lamp X, Y: Relay (Coil standard of 0.9W or less for 12 V DC) X, Y: Relay (1 mA DC) Auto change over (CN3N)
Page 111 8-7. HOW TO CHECK THE PARTS PUMY-P112VKM3(-BS) PUMY-P125VKM3(-BS) PUMY-P140VKM3(-BS) PUMY-P112YKM3(-BS) PUMY-P125YKM3(-BS) PUMY-P140YKM3(-BS) PUMY-P112YKME3(-BS) PUMY-P125YKME3(-BS) PUMY-P140YKME3(-BS) Parts name Check points Thermistor (TH2) Disconnect the connector then measure the resistance with a tester. <HIC pipe> (At the ambient temperature 10 to 30:)
Page 112 Check method of DC fan motor (fan motor/outdoor multi controller circuit board) Notes · High voltage is applied to the connecter (CNF1,2) for the fan motor. Pay attention to the service. · Do not pull out the connector (CNF1,2) for the motor with the power supply on. board and fan motor.) (It causes trouble of the outdoor multi controller circuit Self check...
Page 113 8-8. HOW TO CHECK THE COMPONENTS <Thermistor feature chart> Low temperature thermistors • Thermistor <HIC pipe> (TH2) • Thermistor <Outdoor liquid pipe> (TH3) • Thermistor <Suction pipe> (TH6) • Thermistor <Ambient> (TH7) Thermistor R0 = 15 k" ± 3 % B constant = 3480 ± 2 % =15exp{3480( – 273+t 15 k" 4.3 k" 9.6 k" 3.0 k"...
Page 114: High Pressure Sensor
<HIGH PRESSURE SENSOR> • Comparing the High Pressure Sensor Measurement and Gauge Pressure By configuring the digital display setting switch (SW1) as shown in the figure below, the pressure as measured by the high pressure sensor appears on the LED1 on the control board. The figure at left shows that the switches 1 through 4 are set to ON and 5 through 8 are set to OFF.
Page 115: Low Pressure Sensor
<LOW PRESSURE SENSOR> • Comparing the Low Pressure Sensor Measurement and Gauge Pressure By configuring the digital display setting switch (SW1) as shown in the figure below, the pressure as measured by the low pressure sensor appears on the LED1 on the control board. The figure at left shows that the switches 1 through 4 are set to ON and 5 through 8 are set to OFF.
Page 116 8-9. TEST POINT DIAGRAM Outdoor multi controller circuit board PUMY-P112VKM3(-BS) PUMY-P125VKM3(-BS) PUMY-P140VKM3(-BS) PUMY-P112YKM3(-BS) PUMY-P125YKM3(-BS) PUMY-P140YKM3(-BS) PUMY-P112YKME3(-BS) PUMY-P125YKME3(-BS) PUMY-P140YKME3(-BS) <CAUTION> TEST POINT 1 is high voltage. CN51 External signal Model selection Pump down Test run Manual defrost Model selection output CN102...
Page 117 Outdoor power circuit board Brief Check of POWER MODULE Usually, they are in a state of being short-circuited if they are broken. PUMY-P112VKM3(-BS) Measure the resistance in the following points (connectors, etc.). PUMY-P125VKM3(-BS) If they are short-circuited, it means that they are broken.
Page 118 Outdoor power circuit board Brief Check of POWER MODULE Usually, they are in a state of being short-circuited if they are broken. PUMY-P112YKM3(-BS) Measure the resistance in the following points (connectors, etc.). PUMY-P125YKM3(-BS) If they are short-circuited, it means that they are broken. 1.
Page 119 Outdoor power circuit board Brief Check of POWER MODULE Usually, they are in a state of being short-circuited if they are broken. PUMY-P112YKME3(-BS) Measure the resistance in the following points (connectors, etc.). PUMY-P125YKME3(-BS) If they are short-circuited, it means that they are broken. 1.
Page 120 M-NET power circuit board PUMY-P112VKM3(-BS) PUMY-P112YKM3(-BS) PUMY-P112YKME3(-BS) PUMY-P125VKM3(-BS) PUMY-P125YKM3(-BS) PUMY-P125YKME3(-BS) PUMY-P140VKM3(-BS) PUMY-P140YKM3(-BS) PUMY-P140YKME3(-BS) Connect to the outdoor multi controller circuit board (CN102) 1–2: 24–30 V DC 3–4: 24–30 V DC Connect to the electrical parts box • Connect to the outdoor noise filter circuit board (CNAC1) (Y) • Connect to the outdoor...
Page 121 Outdoor noise filter circuit board PUMY-P112YKM3(-BS) PUMY-P125YKM3(-BS) PUMY-P140YKM3(-BS) LI1, LI2, LI3, NI CNAC1 POWER SUPPLY 230 V AC LI1-LI2/LI2-LI3/LI3-LI1 : 400 V AC input (Connect to the M-NET power circuit LI1-NI/LI2-NI/LI3-NI : 230 V AC input board(CN1)) (Connect to the terminal block (TB1)) Connect to the elec- trical parts box Connect to the electrical...
Page 122 Outdoor noise filter circuit board PUMY-P112YKME3(-BS) PUMY-P125YKME3(-BS) PUMY-P140YKME3(-BS) LI1, LI2, LI3, NI CNAC1 POWER SUPPLY 230 V AC LI1-LI2/LI2-LI3/LI3-LI1 : 400 V AC input (Connect to the M-NET power circuit LI1-NI/LI2-NI/LI3-NI : 230 V AC input board(CN1)) (Connect to the terminal block (TB1)) Connect to the elec- trical parts box Connect to the electrical...
Page 123 Outdoor converter circuit board PUMY-P112YKME3(-BS) PUMY-P125YKME3(-BS) PUMY-P140YKME3(-BS) L1-A1 L1-IN, N-IN CK-OU Connect to the ACL1 Connect to the noise filter Connect to the CK capacitor circuit board (LO1, NO) Connect to the outdoor power circuit board (CN7) L1-A2, L2-A2, L3-A2 L1-OU, L2-OU, L3-OU Connect to the ACL1, ACL2, ACL3 Connect to the outdoor power circuit board...
Page 124 8-10. OUTDOOR UNIT INFORMATION DISPLAY SW:setting 0..OFF 1..ON OCH632A...
Page 125 OCH632A...
Page 126 OCH632A...
Page 127 OCH632A...
Page 128 OCH632A...
Page 129 OCH632A...
Page 130 OCH632A...
Page 131 OCH632A...
Page 132: Electrical Wiring
ELECTRICAL WIRING This chapter provides an introduction to electrical wiring for the CITY MULTI-S series, together with notes concerning power wiring, wiring for control (transmission wires and remote controller wires), and the frequency converter. 9-1. OVERVIEW OF POWER WIRING Use a separate power supply for the outdoor unit and indoor unit. Bear in mind ambient conditions (ambient temperature, direct sunlight, rain water,etc.) when proceeding with the wiring and connections.
Page 133 <When power is supplied separately> PUMY-P•VKM3 series ～ /N 220/230/240 V, 50 Hz ～ /N 220/230/240 V, 50 Hz ～ /N 220 V, 60 Hz ～ /N 220 V, 60 Hz S1/S2/S3 S1/S2/S3 PUMY-P•YKM(E)3 series S1/S2/S3 S1/S2/S3 S1/S2/S3 S1/S2/S3 Grounded 3N～380/400/415 V, 50Hz L1/L2/L3/N 3N～380 V, 60 Hz (YKM3 only)
Page 134 9-2-2. Cross section area of Wire for Main Power and ON/OFF capacities PUMY-P112VKM3(-BS) PUMY-P125VKM3(-BS) PUMY-P140VKM3(-BS) PUMY-P112YKM3(-BS) PUMY-P125YKM3(-BS) PUMY-P140YKM3(-BS) PUMY-P112YKME3(-BS) PUMY-P125YKME3(-BS) PUMY-P140YKME3(-BS) <Outdoor unit> <When power is supplied to outdoor unit and branch box separately> Minimum Wire Cross-sectional area (mm²) Power Supply...
Page 135 <Example of “F2” calculation> Condition PLFY-VBM × 4 + PEFY-VMA × 1, C = 8 (refer to right sample chart) F2 = 19.8 × 4/8 + 38 × 1/8 = 14.65 → 16 A breaker (Tripping current = 8 × 16 A at 0.01 s) Current sensitivity is calculated using the following formula. G1 = V2 × (Quantity of Type1) + V2 × (Quantity of Type2) + V2 × (Quantity of Type3) + ··· + V2 × (Quantity of Type14) + V3 × (Wire length[km]) <Example of "G1"...
Page 136: Wiring Transmission Cables
9-3. DESIGN FOR CONTROL WIRING Please note that the types and numbers of control wires needed by the CITY MULTI-S series depend on the remote controllers and whether they are linked with the system or not. 9-3-1. Selection number of control wires M-NET remote controller Remote controller used in system control operations.
Page 137 9-5. SYSTEM SWITCH SETTING In order to identify the destinations of signals to the outdoor units, indoor units, and remote controller of the MULTI-S series, each microprocessor must be assigned an identification number (address). The addresses of outdoor units, indoor units, and remote controller must be set using their settings switches.
Page 138 9-7. METHOD FOR OBTAINING ELECTRICAL CHARACTERISTICS WHEN A CAPACITY AGREEMENT IS TO BE SIGNED WITH AN ELECTRIC POWER COMPANY The electrical characteristics of connected indoor unit system for air conditioning systems, including the MULTI-S series, depend on the arrangement of the indoor and outdoor units. First read the data on the selected indoor and outdoor units and then use the following formulas to calculate the electrical characteristics before applying for a capacity agreement with the local electric power company.
Page 139: Refrigerant Piping Tasks
REFRIGERANT PIPING TASKS 10-1. REFRIGERANT PIPING SYSTEM Line-Branch Method Connection Examples (Connecting to 4 Indoor Units) Outdoor Unit First Branch Indoor unit Total Piping Length A+B+C+a+b+c+d [ 300 m Permissible Farthest Piping Length A+B+C+d [ 150 m Length Farthest Piping Length After First Branch B+C+d [ 30 m Permissible High/ High/Low Difference in Indoor/Outdoor Section...
Page 140 Header-Branch Method Connection Examples (Connecting to 4 Indoor Units) Outdoor Unit First Branch Indoor unit Total Piping Length A+a+b+c+d [ 300 m Permissible Farthest Piping Length A+d [ 150 m Length Farthest Piping Length After First Branch d is 30 meters or less Permissible High/ High/Low Difference in Indoor/Outdoor Section 50 meters or less (If the outdoor unit is lower, 40 meters or less)
Page 141 Note: Pipe re-branching after the header branching is not possible. Method of Combined Branching of Lines and Headers Connection Examples (Connecting to 5 Indoor Units) Outdoor unit First branching (branching joint) Branching joint Indoor unit Branching header Blind caps Total Piping Length A+B+C+a+b+c+d+e is 300 meters or less Permissible Farthest Piping Length...
Page 142 10-2. REFRIGERANT PIPING SYSTEM (WHEN USING BRANCH BOX) AOutdoor unit BBranching joint CBranch box Branch box Method DIndoor unit Connection Examples (Connecting to 8 Indoor Units) Total piping length A + B + C + a + b + c + d + e + f + g + h ≦ 150 m Farthest piping length (L) A + C + h ≦...
Page 143 A Outdoor Unit B First joint C Branch header (CMY) D Branch box E CityMulti Indoor unit F M/S/P series Indoor unit Mixed Method Connection Examples (Connecting to 1 Branch box) Total piping length A+B+C+D+E+a+b+c+d+e+f+g+h+i+j ≦300 m * Farthest piping length (L1) A+E+a or A+B+C+e ≦...
Page 144 A Outdoor Unit B First joint C Branch header (CMY) D Branch box E CityMulti Indoor unit F M/S/P series Indoor unit Mixed Method Connection Examples (Connecting to 2 Branch boxes) Total piping length A+B+C+D+E+a+b+c+d+e+f+g+h+i+j+k ≦240 m * Farthest piping length (L1) A+E+a ≦...
Page 145: Precautions Against Refrigerant Leakage
10-3. PRECAUTIONS AGAINST REFRIGERANT LEAKAGE 10-3-1. Introduction R410A refrigerant of this air conditioner is non-toxic and non-flammable but leaking of large amount from an indoor unit into the room where the unit is installed may be deleterious. To prevent possible injury, the rooms should be large enough to keep the R410A concentration specified by ISO 5149-1 as follows.
Page 146: Disassembly Procedure
DISASSEMBLY PROCEDURE PUMY-P112VKM3(-BS) PUMY-P125VKM3(-BS) PUMY-P140VKM3(-BS) Note: Turn OFF the power supply before disassembly. OPERATING PROCEDURE PHOTOS 1. Removing the service panel and top panel Photo 1 Top panel (1) Remove 3 service panel fixing screws (5 × 12) and Top panel fixing screws...
Page 147 From the previous page. OPERATING PROCEDURE PHOTOS Photo 5 (6) Remove 2 electrical parts box fixing screws (4 × 10) Electrical parts box and detach the electrical parts box by pulling it upward. The electrical parts box is fixed with 2 hooks on the left and 1 hook on the right.
Page 148 OPERATING PROCEDURE PHOTOS 6. Removing the thermistor <Outdoor liquid pipe> (TH3) Photo 9 and thermistor <Compressor> (TH4), thermistor <HIC pipe> (TH2) (1) Remove the service panel. (See Photo 1) (2) Disconnect the connectors, TH3 (white) and TH4 (white), TH2 (black) on the outdoor multi controller cir- cuit board in the electrical parts box.
Page 149 OPERATING PROCEDURE PHOTOS Photo 11 9. Removing bypass valve coil (SV1) and bypass valve (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) Electronic expansion (3) Remove 3 right side panel fixing screws (5 × 12) in the valve coil (LEV-B) Bypass valve rear of the unit and remove the right side panel.
Page 150 OPERATING PROCEDURE PHOTOS & ILLUSTRATION 13. Removing the compressor (MC) Photo 13 (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) Valve bed (3) Remove 2 front cover panel fixing screws (5 × 12) and Valve bed remove the front cover panel.
Page 151 PUMY-P112YKM3(-BS) PUMY-P125YKM3(-BS) PUMY-P140YKM3(-BS) PUMY-P112YKME3(-BS) PUMY-P125YKME3(-BS) PUMY-P140YKME3(-BS) Note: Turn OFF the power supply before disassembly. OPERATING PROCEDURE PHOTOS 1. Removing the service panel and top panel Photo 1 Top panel Top panel fixing screws (1) Remove 3 service panel fixing screws (5 × 12) and slide the hook on the right downward to remove the Service panel fixing screw...
Page 152 From the previous page. OPERATING PROCEDURE PHOTOS (6) Remove 2 electrical parts box fixing screws (4 × 10) Photo 5 and detach the electrical parts box by pulling it upward. The electrical parts box is fixed with 2 hooks on the left Electrical parts box and 1 hook on the right.
Page 153 OPERATING PROCEDURE PHOTOS 6. Removing the thermistor <Outdoor liquid pipe> (TH3) Photo 9 and thermistor <Compressor> (TH4), thermistor <HIC pipe> (TH2) (1) Remove the service panel. (See Photo 1) (2) Disconnect the connectors, TH3 (white) and TH4 (white), TH2 (black) on the outdoor multi controller cir- cuit board in the electrical parts box.
Page 154 OPERATING PROCEDURE PHOTOS 9. Removing bypass valve coil (SV1) and bypass valve Photo 11 (1) Remove the service panel. (See Photo 1) Electronic expansion Bypass valve (2) Remove the top panel. (See Photo 1) valve coil (LEV-B) coil fixing screw Bypass valve (3) Remove 3 right side panel fixing screws (5 ×...
Page 155 OPERATING PROCEDURE PHOTOS & ILLUSTRATION 13. Removing the reactor (DCL) Photo 13: YKM3 model (1) Remove the service panel. (See Photo 1) (2) Disconnect the lead wires from the reactor. 4-way valve Reactor box (3) Remove the 4 screws, that fix the reactor box. (See Photo 13 or Figure 1) (4) Remove the reactor box.
Page 156 OPERATING PROCEDURE PHOTOS & ILLUSTRATION 14. Removing the compressor (MC) Photo 14 (1) Remove the service panel. (See Photo 1) Valve bed (2) Remove the top panel. (See Photo 1) (3) Remove 2 front cover panel fixing screws (5 × 12) and Valve bed remove the front cover panel.
Page 157 OCH632A...
Page 158 HEAD OFFICE : TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN cCopyright 2016 MITSUBISHI ELECTRIC CORPORATION Issued: Mar. 2017 No.OCH632 REVISED EDITION-A Published: Dec. 2016 No.OCH632 Specifications are subject to change without notice. Made in Japan...

This manual is also suitable for:

Pumy-p140ykm3 Pumy-p125vkm3 Pumy-p112vkm3-bs Pumy-p125vkm3-bs Pumy-p112ykm3-bs Pumy-p140vkm3-bs ... Show all

Mitsubishi Electric PUMY-P112VKM3 Technical & Service Manual

Quick Links

Need help?

Questions and answers

Related Manuals for Mitsubishi Electric PUMY-P112VKM3

Summary of Contents for Mitsubishi Electric PUMY-P112VKM3

This manual is also suitable for:

Table of Contents