Hitachi RAM-90QH5 Service Manual
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Hitachi RAM-90QH5 Service Manual

Outdoor unit
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SERVICE MANUAL

TECHNICAL INFORMATION

FOR SERVICE PERSONNEL ONLY
NOTE:
This manual describes only points that differ from
PM No. 0322E, PM No. 0355E and PM No. 0366E
for items not described in this manual.
TYPE
MODEL
POWER SOURCE
TOTAL INPUT
TOTAL AMPERES
COOLING CAPACITY
HEATING CAPACITY
DIMENSIONS
NET WEIGHT
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

ROOM AIR CONDITIONER

APRIL 2007
RAM-90QH5
(W)
(A)
(kW)
(B.T.U.)
W
(mm)
H
D
(kg)
OUTDOOR UNIT
Refrigeration & Air-Conditioning Division
NO. 0371E
PM
RAM-90QH5
REFER TO THE FOUNDATION MANUAL
SPECIFICATIONS ------------------------------------------------------------------- 5
Installation --------------------------------------------------------------------- 16
Construction And Dimensional Diagram --------------------- 20
Wiring Diagram ---------------------------------------------------------------- 21
Main Parts Component --------------------------------------------------- 24
CIRCUIT DIAGRAM --------------------------------------------------------------- 25
Block Diagram ----------------------------------------------------------------- 29
Basic Mode ----------------------------------------------------------------------- 31
Refrigerating Cycle Diagram --------------------------------------- 51
Description Of Main Circuit Operation ----------------------- 52
Trouble Shooting ----------------------------------------------------------- 88
Parts List And Diagram -------------------------------------------------- 94
DC INVERTER FIVE SYSTEM MULTI
OUTDOOR UNIT
RAM-90QH5
1ø, 220 - 240V, 50/60Hz
REFER TO THE SPECIFICATIONS PAGE
950
800
370
71
CONTENTS
After installation

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  • Page 1: Service Manual

    NO. 0371E RAM-90QH5 SERVICE MANUAL REFER TO THE FOUNDATION MANUAL TECHNICAL INFORMATION CONTENTS FOR SERVICE PERSONNEL ONLY SPECIFICATIONS ------------------------------------------------------------------- 5 INSTALLATION --------------------------------------------------------------------- 16 CONSTRUCTION AND DIMENSIONAL DIAGRAM --------------------- 20 WIRING DIAGRAM ---------------------------------------------------------------- 21 MAIN PARTS COMPONENT --------------------------------------------------- 24 CIRCUIT DIAGRAM --------------------------------------------------------------- 25...
  • Page 2 SAFETY DURING REPAIR WORK 1. In order to disassemble and repair the unit in question, be sure to disconnect the power cord plug from the power outlet before starting the work. 2. If it is necessary to replace any parts, they should be replaced with respective genuine parts for the unit, and the replacement must be effected in correct manner according to the instructions in the Service Manual of the unit.
  • Page 3 WORKING STANDARDS FOR PREVENTING BREAKAGE OF SEMICONDUCTORS 1. Scope The standards provide for items to be generally observed in carrying and handling semiconductors in relative manufacturers during maintenance and handling thereof. (They apply the same to handling of abnormal goods such as rejected goods being returned).
  • Page 4 (6) Use a three wire type soldering iron including a grounding wire. Metal plate (of aluminium, stainless steel, etc.) Working table Resistor of 1 M (1/2W) Staple Earth wire Bare copper wire (for body earth) Fig. 3. Grounding of the working table Soldering iron Grounding wire...
  • Page 5 CAUTION In quiet operation or stopping the operation, slight flowing noise of refrigerant in the refrigerating cycle is heard occasionally, but this noise is not abnormal for the operation. When it thunders near by, it is recommend to stop the operation and to disconnect the power cord plug from the power outlet for safety.

  • Page 6: Specifications

    SPECIFICATIONS MODEL RAM-90QH5 138 W FAN MOTOR FAN MOTOR CAPACITOR FAN MOTOR PROTECTOR JU1318D1 COMPRESSOR COMPRESSOR MOTOR CAPACITOR OVERLOAD PROTECTOR OVERHEAT PROTECTOR 5.0A FUSE (for MICROPROCESSOR) POWER RELAY POWER SWITCH TEMPORARY SWITCH SERVICE SWITCH TRANSFORMER VARISTOR 450NR NOISE SUPPRESSOR THERMOSTAT...
  • Page 7 SPECIFICATIONS FOR INDOOR UNITS COMBINATION TYPE DC INVERTER FIVE SYSTEM MULTI COOLING AND HEATING MODEL OUTDOOR UNIT RAM-90QH5 PHESE/VOLTAGE/FREQUENCY 1ø, 220 - 240V, 50/60Hz CIRCUIT AMPERES TO CONNECT (A) 9.00 (3.20 - 9.90) CAPACITY (kW) (B.T.U./h) 30,720 (10,920 - 33,780)
  • Page 8 DC INVERTER SYSTEM MULTI R.A.C. RAM-90QH5 COOL / HEAT CAPACITY SPEC. FOR INDOOR UNITS COMBINATIONS TO BE ABLE TO OPERATE SIMULTANEOUSLY Whichever indoor units are installed, cooling and heating capacity depends on how many and which indoor units are operating at that time.
  • Page 9 1.88 1.88 3.22 3.22 1.65 2.85 2.85 2.85 1.8+3.5+3.5+5.0 1.15+2.30+2.30+3.25 9.00 2530 1.56 2.69 2.69 4.06 2.18 2.74 2.74 2.74 <REMARKS> * ONE UNIT INDICATED ARE ONLY FOR ONE UNIT OPERATION WHEN TWO OR MORE INDOOR UNITS ARE CONNECTED. * TWO UNITS INDICATED ARE ONLY FOR TWO UNITS OPERATION WHEN TWO OR MORE INDOOR UNITS ARE CONNECTED. * THREE UNITS INDICATED ARE ONLY FOR THREE UNITS OPERATION WHEN THREE OR MORE INDOOR UNITS ARE CONNECTED.
  • Page 10 FIVE INVERTER SYSTEM MULTI R.A.C. RAM-90QH5 INDOOR UNITS COMBINATIONS TO BE ABLE TO INSTALL Two, three, four or five indoor units can be installed with one outdoor unit. And total nominal cooling capacity should not be more than 15.5kW NOMINAL...
  • Page 11 QUADRUPLE SYSTEM MULTI R.A.C. RAM-90QH5 INDOOR UNITS COMBINATIONS TO BE ABLE TO INSTALL CONNECTING POSITION ON SUITABLE ROOM SIZE OUTDOOR UNIT POSSIBLE COMBINATIONS TO INSTALL (VALVE DIAMETER) (mm) TO INSTALL (kW) No. 1 No. 2 No. 3 No. 4 No. 5 6.35/9.52D 6.35/9.52D 6.35/9.52D 6.35/12.7D 6.35/12.7D...
  • Page 12 1.8+1.8+1.8+1.8+1.8 ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) 1.8+1.8+1.8+1.8+2.5 ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 8 ~ 12 ) + ( 11 ~ 16 ) 1.8+1.8+1.8+1.8+3.5 ( 7 ~ 10 ) + ( 7 ~ 10 ) + ( 7 ~ 10 ) + ( 7 ~ 10 ) + ( 13 ~ 20 ) 1.8+1.8+1.8+1.8+5.0 ( 6 ~ 9 ) + ( 6 ~ 9 ) + ( 6 ~ 9 ) + ( 6 ~ 9 ) + ( 17 ~ 25 ) 1.8+1.8+1.8+1.8+6.0 ( 6 ~ 8 ) + ( 6 ~ 8 ) + ( 6 ~ 8 ) + ( 6 ~ 8 ) + ( 19 ~ 28 )
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  • Page 16 4. Air purging by using vacuum pump Remove the valve cap from the service valves located at both the Air purging by vacuum pump large and small pipe rims When the meter reaches -101KPa (-76cmHg) during pumping, fully tighten the shuttle. Connect the charging hose A to the large service valve.

  • Page 17: Installation

    INSTALLATION PIPE LENGTH (1) Total 75m maximum pipe length. (2) Pipe length for one indoor unit : maximum 25m. : minimum 5m. Indoor unit 2 Indoor unit 3 Indoor unit 4 Indoor unit 5 Indoor unit 1 Outdoor unit HIGHT DIFFERENCE (1) Height : maximum ±...
  • Page 18 MODEL: RAM-90QH5 Flare adaptor for piping The flare adaptor for piping is required depending on combination of indoor units. • ø9.52 (3/8”) ➝ ø 12.7 (1/2”) One unit of 1.8kW, 2.5kW, 3.5kW, 5.0kW or 6.0kW Parts number TA261D-4 001 (5.0kW, 6.0kW unit: Optional flare adaptor for piping is necessary.) •...
  • Page 19 BASE DRAIN PIPE BUSH DRAIN PIPE – 18 –...

  • Page 20: Indoor Unit

    RAM-90QH5 Connect the earth cord AC200-240V INDOOR 5 INDOOR 5 INDOOR 4 INDOOR 4 INDOOR 3 INDOOR 2 INDOOR 1 A5 B5 C5 D5 A4 B4 C4 D4 C3 D3 C2 D2 C1 D1 After remove the screw and cover, put...

  • Page 21: Construction And Dimensional Diagram

    CONSTRUCTION AND DIMENSIONAL DIAGRAM MODEL RAM-90QH5 Service space – 20 –...

  • Page 22: Wiring Diagram

    WIRING DIAGRAM MODEL RAM-90QH5 POWER SOURCE TERMINAL AC220 - 240V BOARD 50/60Hz INDOOR 5 INDOOR 5 P.W.B. CAPA TAB 01 TAB 02 INDOOR 4 P.W.B. IPM INDOOR 4 BOARD INDOOR 3 INDOOR 2 (BLU) – 21 –...
  • Page 23 COMPRESSOR MOTOR Compressor Motor Specifications MODEL RAM-90QH5 COMPRESSOR MODEL JU1318D1 PHASE SINGLE RATED VOLTAGE AC 220 ~ 240 V RATED FREQUENCY 50/60 Hz POLE NUMBER WHITE CONNECTION YELLOW 0.410 20°C 0.397 RESISTANCE VALUE (68°F) 0.390 0.499 75°C (167°F) 0.483 0.474...

  • Page 24: Main Parts Component

    MAIN PARTS COMPONENT FAN MOTOR Fan Motor Specifications MODEL RAM-90QH5 POWER SOURCE DC : 280V OUTPUT 138W 280V CONNECTION 0-6V 0-15V (Control circuit built in) 20˚C — (68˚F) RESISTANCE VALUE 75˚C — (167˚F) BLU : BLUE YEL : YELLOW BRN : BROWN...

  • Page 25: Circuit Diagram

    CIRCUIT DIAGRAM Remote Control Key matrix table Output Input Door open Start/Stop Operation selection Fan speed selection Automatic swing Door shut Start/Stop Automatic swing – – SEG20 SEG5 Door open On timer Hour up Hour down • present time SEG0 SEG19 SEG1 SEG18...
  • Page 26 CIRCUIT DIAGRAM MODEL RAM-90QH5 – 27 –...

  • Page 27: Block Diagram

    BLOCK DIAGRAM MODEL RAM-90QH5 Outdoor Unit Power source single phase 50/60Hz, 220-240V compressor System Magnetic relay Power Module Inrush current protection relay Rotor position SPM driver detector EEPROM Overload current detector Expansion valve 1 Expansion valve 2 Fan motor Expansion valve...
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  • Page 29 MODEL RAM-90QH5 PROM NO. LABEL NAME REQUIRED VALUE OF UNIT SIDE 118.2 °C OH_ON_C 104.7 °C OH_OFF_C 100.0 °C OH_ON_W 86.5 °C OH_OFF_W PSTARTC1_d PSTARTC1K_d PSTARTC2_d PSTARTC2K_d PSTARTC3_d PSTARTC3K_d PSTARTC4_d PSTARTC4K_d PSTARTC5_d PSTARTC5K_d PSTARTH1_d PSTARTH1S_d PSTARTH2_d PSTARTH2S_d PSTARTH3_d PSTARTH3S_d PSTARTH4_d...
  • Page 30 [Outdoor temperature >STAROTP_C] TSKTM1_C1 [Outdoor temperature ≤STAROTP_C] TSKTM1_C2 Notes: (1) Cool dash is started when the operation is started at fan speed “AUTO” or “HI” or when the fan speed is changed to “AUTO” or “HI” during cooling operation, and when the compressor speed (P item) reaches (CMAX1 ro CMAX2) or higher.
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  • Page 35 MODEL RAM-90QH5 Expansion valves • The expansion valves are initialized when power is supplied. The valve for unit 1 is fully closed (–520 pulses), and then that for unit 2 is fully opened (480 pulses). The valve for unit 2 is fully closed (–520 pulses), and then that for unit 3 is fully opened (480 pulses).
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  • Page 37 MODEL RAM-90QH5 • Time chart when executing defrost (Unit 1 and Unit 2 operated, Unit 3, Unit 4 and Unit 5 stopped) Unit 1 Heating Unit 2 Heating Unit 3 Unit 4 Unit 5 Defrosting signal Unit 1 Defrost request...
  • Page 38 RAM-90QH5 Unit 1 Heating Unit 2 Heating Unit 3 Unit 4 Unit 5 Defrosting signal Unit 1 Defrost request Balancing request Unit 2 Balancing request Unit 3 Balancing request Unit 4 Balancing request Unit 5 Turns on 15 sec 30 sec...
  • Page 39 MODEL RAM-90QH5 FORCED COOLING In order to accumulate refrigerant, units operate in cooling cycle. Execution condition and operation status are shown below. [Execution condition] With neither indoor unit 1, 2, 3, 4 and 5 not operated, when service switch is turned ON, forced cooling will be performed.
  • Page 40 RAM-90QH5 When one unit is operated for cooling Unit 1 Cooling Unit 2 Unit 3 Unit 4 Unit 5 [NDWN_ON] [NDWN_OFF] Turns on for heating Outdoor fan —1 Decreases by 100 min /30 sec. —1 Increases by 50 min /30 sec.
  • Page 41 When one unit is operated for heating Unit 1 Heating Unit 2 Unit 3 Unit 4 Unit 5 [NDWN_ON] [NDWN_OFF] Turns on for heating Outdoor fan —1 Decreases by 100 min /30 sec. —1 Increases by 50 min /30 sec. 30 sec 30 sec 30 sec 30 sec 30 sec 30 sec 30 sec...

  • Page 42: Refrigerating Cycle Diagram

    REFRIGERATING CYCLE DIAGRAM MODEL RAM-90QH5 – 51 –...

  • Page 43: Description Of Main Circuit Operation

    DESCRIPTION OF MAIN CIRCUIT OPERATION MODEL RAM-90QH5 Power Circuit Fig. 1-1 This circuit full-wave rectifies 220-240 AC applied between terminals L and N, and boosts it to a required voltage with the active module, to create a DC voltage. The voltage becomes 320-360V when the compressor is operated.
  • Page 44 (4) Smoothing capacitor (C945 to C950, 400µF, 450V) This smoothes (averages) the voltage rectified by the diode stacks. Vd (DC Voltage) Fig. 1-2 DC voltage (Approx. 300-330V during operation) Fig. 1-3 Fig. 1-4 Be careful to avoid an electric shock as a high voltage is generated. Also take care not to cause a short-circuit through incorrect connection of test equipment terminals.
  • Page 45 (6) C001 to C014, C022 to C027, NF COIL1 to NF COIL3, Be sure to ground outdoor unit. NF COIL4. These absorb electrical noise generated If not grounded, noise filter circuit does during operation of compressor, and also absorb not operate correctly. external noise entering from power line to protect electronic parts.
  • Page 46 Fig. 2-1 shows the interface circuit used for the indoor and outdoor microcomputers to communicate with each other. Indoor 1 R813 R812 C802 Q803 R810 IF transmit output (SDO) C804 R811 Micro computer C821 R821 IF receive input (SDI) I/F 0V C822 D101 Terminal board...
  • Page 47 Fig. 2-1 shows the interface circuit used for the indoor and outdoor microcomputers to communicate with each other. Indoor 2 R813 R812 C802 Q803 R810 IF transmit output (SDO) C804 R811 Micro computer C821 R821 IF receive input (SDI) I/F 0V C822 D101 Terminal board...
  • Page 48 Fig. 2-1 shows the interface circuit used for the indoor and outdoor microcomputers to communicate with each other. Indoor 3 R813 R812 C802 Q803 R810 IF transmit output (SDO) C804 R811 Micro computer C821 R821 IF receive input (SDI) I/F 0V C822 D101 Terminal board...
  • Page 49 Fig. 2-1 shows the interface circuit used for the indoor and outdoor microcomputers to communicate with each other. Indoor 4 R813 R812 C802 Q803 R810 IF transmit output (SDO) C804 R811 Micro computer C821 R821 IF receive input (SDI) I/F 0V C822 D101 Terminal board...
  • Page 50 Fig. 2-1 shows the interface circuit used for the indoor and outdoor microcomputers to communicate with each other. Indoor 5 R813 R812 C802 Q803 R810 IF transmit output (SDO) C804 R811 Micro computer C821 R821 IF receive input (SDI) I/F 0V C822 D101 Terminal board...
  • Page 51 3. System power Module Circuit – 60 –...
  • Page 52 0.7V Base of outdoor P.W.B Q801, Q802, Q803, Q804, Q805 Outdoor micro computer lndoor micro computer SDO Pin SDI Pin 35V DC line 33ms. 100ms. 1 frame Leader Fig. 2-2 Voltages Waveforms of indoor / Outdoor Micro computers (Outdoor to Indoor Communications) Base of outdoor P.W.B Q801, Q802, Q803, Q804, Q805 Outdoor micro computer lndoor micro computer SDO Pin...
  • Page 53 4. Power Supply Circuit Fig. 4-1 shows the power circuit. FUSE C790 — A — A — A — A C770 — B D735 R773 D730 — B C773 — B D731 R774 L702 D736 — B R775 R777 C776 R779 C769 C777...
  • Page 54 (2) During ON The drain current at IC1 increases linearly. During this period, the gate voltage and current become constant because of the saturation characteristics of the transformer. (3) Shifting from ON to OFF This circuit applies a negative feedback signal from the 12V output. When the voltage across C711 reaches the specified value, current flows to PC701 .
  • Page 55 320-360V DC compressor motor U coil — — V coil — W coil DC current (Id) detection resistor Fig. 4-2 System Power module circuit (U + is OFF, V – is ON) < Reference > If active module or IPM is defective, self diagnosis lamps on the power P.W.B. may indicate as shown below: Fig.
  • Page 56 5. Reversing valve control circuit Reversing valve D841 PQ841 Q841 Micro R843 computer R832 R841 DC voltmeter or multimeter Fig. 5-1 – 65 –...
  • Page 57 6. Overload control circuit (OVL control circuit) Translation micro computer To power module negative terminal Judgement OVL with respect to Motor control externally set process (R503) value Detection resistor Judgement OVL Voltage amp. according to the rotation converter circuit speed (Internal judgement) Primary Selects data according...
  • Page 58 7. Reset circuit Fig. 7-1 12V line 5V line Reset voltage Time 12V line 5V line Reset voltage Time Fig. 7-2 – 67 –...
  • Page 59 OH (overheat) thermistor and electric expansion valve thermistor so that they detect the temperatures of the unit and control the system. The circuit of the thermistors is shown as Fig. 8-1 for model RAM-90QH5 and their roles and temperature measuring points are shown as Table 8-1.
  • Page 60 Electric expansion valve thermistor (NARROW PIPE 5) – 69 –...
  • Page 61 When the connectors of the thermistors are disconnected or the thermistors is open or short, LD301 (red) lights and LD302 (red) blinks so that they indicate troubled parts. Combinations of LD301 and LD302 are set up for indicating troubled thermistors. The correspondences between the number of blink time and troubled parts are shown as Table 8-3. Look in the table (LD301 and LD302 blink) for troubled parts, and if the disconnections of them are checked out, they are replaced.
  • Page 62 Electric expansion valve Table 9-1 The electric expansion valve is driven by DC 12V. Power is supplied to 1 or 2 phases of 4-phase winding to switch magnetic pole of winding in order to control opening degree. Relationship between power switching direction of phase and open/close direction is shown below. When power is supplied, voltages at pins 4 to 1 of CN25~CN29 are about 0.9V;...
  • Page 63 Fig. 9-2 With expansion valve control, opening degree is adjusted to stabilize target temperature, by detecting temperature of compressor head. The period of control is about once per 20 seconds, and output a few pulses. 3 pices (IC11-IC13) of 8 bit type shift resistor latching driver IC is using in this circuit, which convert the serial input in to parallel output.
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  • Page 66 Power Factor Control Circuit Power factor is controlled by almost 100%. (Effective use of power) With IC in ACT module, control is performed so that input current waveform will be similar to waveform of input voltage. I (input current) input voltage V (input voltage) Effective input current...
  • Page 67 INSPECTING OUTDOOR ELECTRICAL PARTS Check to see that the LED is either on or blinking. Carry out inspections by examining the on/blinking status of LEDs 301-303. LED number LD301 LD302 LD303 Status Checkpoints Name Diagnosis Diagnosis Communications lamp 1 lamp 2 lamp Normal off status or If the LED is not on even when the...
  • Page 68 Inspection method 1 LED on Insert the power source, and check to see that the Follow "Inspecting outdoor electrical parts" and check LED is on. the cause of the problem. LED off Connect a commercial-use 220-240V power source Is AC230V voltage reading at L/N terminal? to the L/N terminal.
  • Page 69 Inspection method 2 Check the number of times LD301 blinks. LD301: Blinks once The power source or some other reason may have caused the microcomputer Reset stop to reset. Replace the control P.W.B. if the LED blinks once and then stops frequently during operation.
  • Page 70 Outdoor fan rotates LD301: Blinks five times Insert the power source and operate, and then check to see that the outdoor fan is Overload stop rotating Outdoor fan rotates, but soon stops. The protection circuit may cause the fan to stop when Replace the fan motor.
  • Page 71 AC187V-276V LD301: Blinks ten times Check the power source voltage Check the wiring (DB2 (terminal board, L/N terminal) Abnormal Voltage blue/yellow/gray/red) Abnormal NG AC187V or less noise or AC276V or more DANGER! Quickly Less then 187V Power source abnormal. Check Connect the power source, then wait for Turn off the power source, and remove turn off the...
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  • Page 73: How To Operate The Outdoor Unit Independently

    HOW TO OPERATE USING THE SERVICE SWITCH THE OUTDOOR UNIT MODEL RAM-90QH5 1. Turn the Power switch off and then turn on again. 2. Remove the electrical parts cover. 3. Press the service switch for one second or more (wait for at least 30 seconds after turning the power source switch on).

  • Page 74: Trouble Shooting

    TROUBLE SHOOTING Model RAM-90QH5 PRECAUTIONS FOR CHECKING Smoothing Capacitor Power source 1 ø220-240V, 50/60Hz DANGER – – – – – – 1. Remember that the – 0V line is biased to Compressor motor 162V in reference to (0V) the ground level.
  • Page 75 Discharge procedure and how to cut off power to power circuit Caution DANGER Voltage of about 360V is charged at both ends of smoothing capacitor 330 µ F x 6. High voltage (DC 360V) is also charged at terminal sections of ACT module and power module. During continuity check of each circuit of electrical parts in outdoor unit is performed, to prevent secondary trouble, disconnect red/gray wire connected to ACT module from diode stack.
  • Page 76 Lighting mode self-diagnosis lamp RAM-90QH5 Location of self-diagnosis lamp – 90 –...
  • Page 77 Lighting mode self-diagnosis lamp RAM-90QH5 – 91 –...
  • Page 78 TROUBLESHOOTING OF THE INTELLIGENT POWER MODULE (IPM) PS21869-P Terminal Intelligent Power Module (IPM) Do not disassemble the IPM when troubleshooting is performed. – 92 –...
  • Page 79 HOW TO CHECK POWER MODULE Checking power module using tester Set tester to resistance range (X 100) If indicator does not swing in the following conductivity check, the power module is normal. (In case of digital tester, since built-in battery is set in reverse direction, + and – terminals are reversed.) CAUTION If inner circuit of power module (IPM) is disconnected (open), the indicator of tester will not swing and this may assumed as normal.

  • Page 80: Parts List And Diagram

    PARTS LIST AND DIAGRAM OUTDOOR UNIT MODEL : RAM-90QH5 – 94 –...
  • Page 81 MODEL RAM-90QH5 PART N0. Q’TY / UNIT PARTS NAME PMRAC-07CV1 2P TERMINAL PMRAM-90QH5 2P TERMINAL PMRAM-90QH5 CABINET RAC-2226HV COMPRESSOR RUBBER PMRAM-90QH5 COMPRESSOR PMRAM-90QH5 CONDENSER PMRAM-90QH5 D-GRILL PMRAM-65QH4 EXPANSION VALVE COIL (B) PMRAM-65QH4 EXPANSION VALVE COIL (R) PMRAM-65QH4 EXPANSION VALVE COIL (W)
  • Page 82 PART N0. Q’TY / UNIT PARTS NAME RAM-90QH5 PMRAC-80YHA THERMISTOR (OH) PMRAM-90QH5 THERMISTOR (OUTSIDE TEMPERATURE) PMRAM-90QH5 THERMISTOR-PIPE (W) PMRAM-90QH5 THERMISTOR-PIPE (N) PMRAM-90QH5 TOP COVER PMRAM-90QH5 VALVE (3S) PMRAM-90QH5 VALVE (5S) PMRAM-90QH5 EXPANSION VALVE PMRAM-90QH5 PWB (CAPA) PMRAM-65QH4 SUPPORT (DEF-THERMISTOR) PMRAC-25NH4...
  • Page 83 HITACHI RAM-90QH5 PM NO. 0371E Printed in Malaysia...

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