Midea Elite Series Technical & Service Manual

Split type, heat pump air conditioners

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GD Midea Refrigeration Equipment Co.,Ltd

SPLIT TYPE, HEAT PUMP AIR CONDITIONERS

Technical & service manual 2005

Elite Series(7000-18000)

[Models]

MSE-07CR

MSE-07HR

MSE-09CR

MSE-09HR

MSE-12CR

MSE-12HR

MSE-18CR

MSE-18HR

R22 Wall Mounted

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Summary of Contents for Midea Elite Series

Page 1 GD Midea Refrigeration Equipment Co.,Ltd SPLIT TYPE, HEAT PUMP AIR CONDITIONERS Technical & service manual 2005 Elite Series(7000-18000) R22 Wall Mounted [Models] MSE-07CR MSE-07HR MSE-09CR MSE-09HR MSE-12CR MSE-12HR MSE-18CR MSE-18HR...
Page 2: Table Of Contents
Elite SERIES (R22) Contents 1. Features………………………………………………………………… 02 2. Specification………………………………………………………..……03 3. Dimensions…………………………………………………………..… 05 4. Refrigeration cycle diagram……………………………………………08 5. Capacity table…………………………………………………………...09 6. Wiring diagram…………………………………………………..………15 7. Electronic function………………………………………….…………...20 8. Troubleshooting……………………………………………………….…28 9. Characteristic of temp. sensor…………………………………………31...
Page 3: Features
1.Features 1.1 Compact design 1.2 LED display...
Page 4: Specification
2.Specification Model MSE-07CR MSE-07HR MSE-09CR MSE-09HR Power supply Ph-V-Hz 220-240V~,50Hz 220-240V~,50Hz 220-240V~,50Hz 220-240V~,50Hz Capacity Btu/h 7000 7000 9000 9000 Input 1050 1050 Cooling Rated current 8.8,2.6 8.8,2.6 Btu/w.h, w/w 8.6,2.5 8.6,2.5 Capacity Btu/h 8000 10000 Input 1020 Heating Rated current 4.45 2.93 2.88...
Page 5 Model MSE-12CR MSE-12HR MSE-18CR MSE-18HR Power supply Ph-V-Hz 220-240V~,50Hz 220-240V~,50Hz 220-240V~,50Hz 220-240V~,50Hz Capacity Btu/h 12000 12000 18000 18000 Input 1350 1350 1960 1960 Cooling Rated current Btu/w.h, w/w 8.9,2.6 8.9,2.6 9.2,2.7 9.2,2.7 Capacity Btu/h 14000 20500 Input 1350 1890 Heating Rated current Moisture Removal Max.
Page 6: Dimensions
3.Dimensions 3.1 Indoor unit MSE-07CR, MSE-07HR MSE-09CR, MSE-09HR MSE-12CR, MSE-12HR...
Page 7 MSE-18CR, MSE-18HR...
Page 8 3.4 Outdoor unit MSE-07CR, MSE-07HR MSE-09CR, MSE-09HR 3.5 Outdoor unit MSE-12CR, MSE-12HR MSE-18CR, MSE-18HR...
Page 9: Refrigeration Cycle Diagram
4.Refrigeration cycle diagram...
Page 10: Capacity Table
5. Capacity table 5.1 MSE-07CR SUMMER OUTDOOR TEMPERATURE DRY Indoor 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Conditions Total capacity kW 2.02 1.92 1.79 1.64 1.51 1.41 21ºC D Sensitive capacity kW 1.44 1.39 1.34 1.27 1.20 1.15 15ºC W Input kW. 0.70 0.76 0.82...
Page 11 WINTER OUTDOOR CONDITIONS Indoor 12ºC D 7ºC D 4ºC D 0ºC D -4ºC D -7ºC D 11ºC W 6ºC W 3ºC W -1ºC W -6ºC W -8ºC W Conditions Capacity kW 2.75 2.45 2.17 1.40 1.17 1.13 15ºC Input kW. 0.97 0.86 0.77...
Page 12: Input Kw
5.4 MSE-09HR SUMMER OUTDOOR TEMPERATURE DRY Indoor 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Conditions Total capacity kW 2.44 2.32 2.16 1.98 1.82 1.70 21ºC D Sensitive capacity kW 1.68 1.63 1.56 1.48 1.40 1.34 15ºC W Input kW. 0.87 0.95 1.02 1.09 1.17...
Page 13: Input Kw
5.5 MSE-12CR SUMMER OUTDOOR TEMPERATURE DRY Indoor 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Conditions Total capacity kW 3.38 3.21 2.99 2.75 2.52 2.35 21ºC D Sensitive capacity kW 2.53 2.28 2.18 2.07 1.96 1.88 15ºC W Input kW. 1.20 1.30 1.41 1.51 1.61...
Page 14 WINTER OUTDOOR CONDITIONS 12ºC D 7ºC D 4ºC D 0ºC D -4ºC D -7ºC D Indoor Conditions 11ºC W 6ºC W 3ºC W -1ºC W -6ºC W -8ºC W Capacity kW 4.81 4.28 3.78 2.45 2.04 1.97 15ºC Input kW. 1.61 1.44 1.29...
Page 15 5.8 MSE-18HR SUMMER OUTDOOR TEMPERATURE DRY Indoor 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Conditions Total capacity kW 4.69 4.45 4.15 3.81 3.50 3.27 21ºC D Sensitive capacity kW 3.28 3.18 3.04 2.88 2.74 2.62 15ºC W Input kW. 1.70 1.84 1.99 2.14 2.28...
Page 16: Wiring Diagram
6. Schematic diagram and wiring diagram 6.1 Schematic diagram R18 10K IN4007*4 7812 +12V-a 7805 ZERO R19 150 Vout Vout REC1 R16 12K IN4148 +12V-a 9014 D11 1N4148 R215.1K D12 1N4148 FANSP_FEEDBACK RECEIVER_V TRANS 2200uF/25V 1000uF/16V 470uF/16V FAN_BACK IC10 7812 +12V-b 10uF/16V IN4007*4...
Page 17 6.2 Wiring diagram 6.2.1 Cooling only 6.2.1.1 MSE-07CR, MSE-09CR MSE-12CR IND OOR UN IT OUT DOOR U NI T 1 2(N) Y&G BLACK BLACK BLACK MOTOR BLUE BLUE Y&G COMPRESSOR CAPACITOR...
Page 18 6.2.1.2 MSE-18CR INDOOR UNIT OUTDOOR UNIT Y&G BLACK BLACK OVERLOAD BLACK RELAY COMPRESSOR MOTOR BLUE WHITE BLUE COMPRESSOR CAPACITOR CAPACITOR...
Page 19 6.2.2 Heating/cooling 6.2.2.1 MSE-07HR, MSE-09HR MSE-12HR I ND OO R UN IT O UT DO OR U NI T...
Page 20 6.2.2.2 MSE-18HR INDOOR UNIT OUTDOOR UNIT BLUE Y&G BLUE 4-WAY BLACK OVERLOAD RELAY BLACK BLACK COMPRESSOR BLUE MOTOR WHITE BLUE COMPRESSOR CAPACITOR FAN CAPACITOR...
Page 21: Electronic Function
7 Electronic function 7.1 Electric Control working environment 7.1.1 input voltage: 175~253V 7.1.2 Input power frequency:50Hz 7.1.3 Ambient temperature: -7°C~+45°C 7.1.4 Indoor fan normal working amp is less than 1A, 7.1.5 Outdoor fan. Normal working amp is less than 1.5A 7.1.6 Four-way valve normal working amp is less than 1A.
Page 22 Protection 7.4.1 3 minutes delay at restart for compressor. 7.4.2 Sensor protection at open circuit and breaking disconnection 7.4.3 Fan Speed is out of control. When Indoor Fan Speed is too high(higher than High Fan+300RPM)or too low(lower than 400RPM), the unit stops and LED displays failure information and can’t returns to normal operation automatically.
Page 23 Anti-freezing control to indoor evaporator at cooling mode( T: evaporator temp. ) Condition Compressor Outdoor fan Temp. Time Evaporator T> TE6 Temp. up T< TE6 >5 Minutes Evaporator T> TE5 Temp. down T< TE5 >5 Minutes 7.7 Dehumidifying mode 7.7.1 The 4-way valve is off in dehumidifying mode 7.7.2 Compressor and Indoor Fan actions in dehumidifying mode...
Page 24 T= Indoor exchanger temp. Indoor exchanger temp. up T<TE1 TE1<T<TE2 Breeze T>TE2 Setting fan speed Indoor exchanger temp. down T> TE3 Setting fan speed TE3<T<TE4 Breeze T<TE4 7.8.5 Auto wind at heating mode Condition Indoor fan speed T=Indoor Temp.-Setting Temp. Room temp.
Page 25 If the temp. difference condition ① is satisfied out of 40 minutes, generally the defrosting time is 6 minutes, after three continuous 6-minute defrost, the fourth should be 10 minutes defrost. The circulation is as following: →7.5-minute defrost → 7.5-minute defrost→7.5-minute defrost→10-minute defrost→ 7.10 Ending condition of defrosting If one of following conditions is satisfied, end the defrost and turn into heating mode:...
Page 26 7.13.3 All protections of remote control cooling are available at forced cooling operation. 7.14 Forced Auto function Select forced auto function with the forced auto button or the switch. In forced auto status the A/C operates at remote control mode with a set temp. of 24℃. 7.15 Timer Function 7.16 Economic Running 7.16.1...
Page 27 7.21 Models and Parameters Model MSE-07CR MSE-07HR MSE-09CR MSE-09HR I3SEC 8.5A 8.5A 10.0A 10.0A I5MIN 6.5A 6.5A 7.5A 7.5A IFAN 5.5A 5.5A 5.5A 5.5A IRESTORE 4.5A 4.5A 4.5A 4.5A IDEFROST 3.5A 3.5A 28℃ 28℃ 32℃ 32℃ 30℃ 30℃ 26℃ 26℃ 4℃...
Page 28 Model MSE-12CR MSE-12HR MSE-18CR MSE-18HR I3SEC 12.0A 12.0A 16.0A 16.0A I5MIN 8.5A 8.5A 13.0A 13.0A IFAN 7.5A 7.5A 11.0A 11.0A IRESTORE 6.5A 6.5A 9.5A 9.5A IDEFROST 5.0A 7.5A ANGLCOOL ANGLHEAT ANGLOFF 0° 0° 0° 0° THDEFROST 17°C TMDEFROST 18°C TLDEFROST 19°C...
Page 29: Troubleshooting
8.Troubleshooting 8.1 Display board Signal receptor AU TO indicator Thi s indicator illuminates whe n the air conditioner i s in AUTO operation. DE FROST indicator (F or Cooling & H eating mo dels only) Thi s indicator illuminates whe n the air conditioner starts defrostin g automati cally or when the warm air control fea ture is activated in he ating oper ation.
Page 30 8.3 Diagnostic Chart 8.3.1 After energizing, no indicator is lighted and the air conditioner can’t be operated. After energizing, the air conditioner can’t be operated Check if AC220V power supply outputs to Indoor PCB. Check if AC220V exists at the primary coil of transformer. Indoor PCB is defective Check if AC14.5V exists at the secondary coil of transformer.
Page 31 8.3.3 Failure phenomenon Failure phenomenon Operation lamp Timer lamp ☆ Indoor fan speed has been out of control for over 1 minute ☆ Indoor room temp. or evaporator sensor is open circuit or short circuit ☆ Over current protection of the compressor occurs 4 times ☆...
Page 32: Characteristic Of Temp. Sensor
9. Characteristic of temp. sensor Temp.℃ Resistance KΩ Temp.℃ Resistance KΩ Temp.℃ Resistance KΩ 62.2756 14.6181 4.3874 58.7079 13.918 4.2126 56.3694 13.2631 4.0459 52.2438 12.6431 3.8867 49.3161 12.0561 3.7348 46.5725 11.5 3.5896 10.9731 3.451 41.5878 10.4736 3.3185 39.8239 3.1918 37.1988 9.5507 3.0707 35.2024...

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Midea Elite Series Technical & Service Manual

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