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Service manual 

 

 

1.  Precaution 

1.1. 

Safety Precaution 

  To prevent injury to the user or other people and property damage, the following instructions must be followed. 

  Incorrect operation due to ignoring instruction will cause harm or damage.   

  Before service unit, be sure to read this service manual at first. 

 

1.2. 

Warning 

 

Installation 

  Do not use a defective or underrated circuit breaker. Use this 

appliance on a dedicated circuit. 

There is risk of fire or electric shock. 

  For electrical work, contact the dealer, seller, a qualified 

electrician, or an Authorized service center. 

Do not disassemble or repair the product, there is risk of 

fire or electric shock. 

 Always ground the product. 

There is risk of fire or electric shock. 

  Install the panel and the cover of control box securely. 

There is risk of fire of electric shock. 

 Always install a dedicated circuit and breaker. 

Improper wiring or installation may cause fore or electric 

shock. 

 Use the correctly rated breaker of fuse. 

There is risk of fire or electric shock. 

 Do not modify or extend the power cable. 

There is risk of fire or electric shock. 

 Do not install, remove, or reinstall the unit by yourself 

(customer). 

There is risk of fire, electric shock, explosion, or injury. 

 Be caution when unpacking and installing the product. 

Sharp edges could cause injury, be especially careful of 

the case edges and the fins on the condenser and 

evaporator. 

 For installation, always contact the dealer or an Authorized 

service center. 

There is risk of fire, electric shock, explosion, or injury. 

 Do not install the product on a defective installation stand. 

It may cause injury, accident, or damage to the product. 

 Be sure the installation area does not deteriorate with age. 

If the base collapses, the air conditioner could fall with it, 

causing property damage, product failure, and personal 

injury. 

 Do not let the air conditioner run for a long time when the 

humidity is very high and a door or a windows is left open. 

Moisture may condense and wet or damage furniture. 

 Take care to ensure that power cable could not be pulled out or 

damaged during operation. 

There is risk of fire or electric shock. 

 Do not place anything on the power cable. 

There is risk of fire or electric shock. 

 Do not plug or unplug the power supply plug during operation. 

There is risk of fire or electric shock. 

 Do not touch (operation) the product with wet hands. 

There is risk of fire or electric shock. 

 Do not place a heater or other appliance near the power cable. 

There is risk of fire and electric shock. 

 Do not allow water to run into electric parts. 

It may cause fire, failure of the product, or electric shock. 

 Do not store or use flammable gas or combustible near the 

product. 

There is risk of fire or failure of product. 

 Do not use the product in a tightly closed space for a long time. 

Oxygen deficiency could occur. 

 When flammable gas leaks, turn off the gas and open a window 

for ventilation before turn the product on. 

Do not use the telephone or turn switches on or off. 

There is risk of explosion or fire. 

 If strange sounds, or small or smoke comes from product. Turn 

the breaker off or disconnect the power supply cable. 

There is risk of electric shock or fire. 

 Stop operation and close the window in storm or hurricane. If 

possible, remove the product from the window before the 

hurricane arrives. 

There is risk of property damage, failure of product, or 

electric shock. 

 Do not open the inlet grill of the product during operation. (Do 

not touch the electrostatic filter, if the unit is so equipped.) 

There is risk of physical injury, electric shock, or product 

failure. 

 When the product is soaked (flooded or submerged), contact an 

Authorized service center. 

There is risk of fire or electric shock. 

 Be caution that water could not enter the product. 

There is risk of fire, electric shock, or product damage. 

 Ventilate the product from time to time when operating it 

together with a stove, etc. 

There is risk of fire or electric shock. 

 Turn the main power off when cleaning or maintaining the 

product.   

There is risk of electric shock. 

 When the product is not be used for a long time, disconnect the 

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Содержание MSQ-07CR

Страница 1: ...1 MSQ 07CR MSQ 07HR MSQ 09CR MSQ 09HR MSQ 12CR MSQ 12HR All manuals and user guides at all guides com a l l g u i d e s c o m...

Страница 2: ...3 Pipe length and the elevation 16 8 4 Air purging of the piping and indoor unit 17 8 5 Pumping down Re installation 18 8 6 Re air purging Re installation 19 8 7 Balance refrigerant of the 2 way 3 wa...

Страница 3: ...eshooting 39 13 1 For all cooling only model 39 13 2 For all heat pump model 39 13 3 Diagnostic chart 40 13 4 Resetting phenomenon often occurs during operation 41 13 5 Operation lamp flashes and Time...

Страница 4: ...nd wet or damage furniture Take care to ensure that power cable could not be pulled out or damaged during operation There is risk of fire or electric shock Do not place anything on the power cable The...

Страница 5: ...perty Do not block the inlet or outlet of air flow It may cause product failure Use a soft cloth to clean Do not use harsh detergents solvents etc There is risk of fire electric shock or damage to the...

Страница 6: ...the LED LCD for each operation mode The fan is turn to low speed cooling heating The unit will be turn off after seven hours Sleep mode auto control The function is usually used in rainy days in spri...

Страница 7: ...run more quietly Low noise air flow system The hydrophilic fin can improve the heating efficiency at operation mode Hydrophilic aluminum fin It is only operated in the heating operation mode except d...

Страница 8: ...Service manual 5 3 Dimension 3 1 Indoor unit MSQ 07 09 12C H R All manuals and user guides at all guides com...

Страница 9: ...Service manual 6 3 2 Outdoor unit MSQ 07 09C H R All manuals and user guides at all guides com...

Страница 10: ...Service manual 7 MSQ 12C H R All manuals and user guides at all guides com...

Страница 11: ...800 1040 900 800 1040 900 800 Indoor air flow Hi Mi Lo m3 h 490 520 470 420 520 Indoor noise level Hi Mi Lo dB A 34 31 25 35 31 26 35 31 26 Outdoor fan motor Model YDK24 6T YDK24 6T YDK24 6T Brand Wel...

Страница 12: ...d hi mi lo r min 1060 940 880 1130 1130 1080 1030 Indoor air flow Hi Mi Lo m3 h 520 470 420 550 550 500 450 Indoor noise level Hi Mi Lo dB A 35 31 26 37 33 27 37 33 27 Outdoor fan motor Model YDK24 6T...

Страница 13: ...Service manual 10 5 Refrigerant cycle diagram Cooling only Heat pump mode All manuals and user guides at all guides com...

Страница 14: ...peration under constant air temperature conditions However excludes the initial pull down stage 6 2 Heating operation Indoor air temp DB Outdoor unit air temp DB Note The chart is the result from the...

Страница 15: ...Service manual 12 7 Schematic diagram and Wiring diagram 7 1 Schematic diagram All manuals and user guides at all guides com...

Страница 16: ...Service manual 13 7 2 Wiring diagram MSQ3 07CR MSQ3 09CR MSQ3 12CR All manuals and user guides at all guides com a l l g u i d e s c o m...

Страница 17: ...Service manual 14 MSQ3 07HR MSQ3 09HR MSQ3 12HR MSQ3 12HR All manuals and user guides at all guides com...

Страница 18: ...Service manual 15 All manuals and user guides at all guides com...

Страница 19: ...heet Grade Unit 7K 9K 12K mm2 1 0 1 0 1 5 8 3 Pipe length and the elevation Capacity Btu h Pipe size Standard length m Max Elevation B m Max Pipe length A m Additional refrigerant g m GAS LIQUID 07k 0...

Страница 20: ...n for gas leakage 4 Purge the air from the system Set the 2 way valve to the open position and remove the cap from the 3 way valve s service port Using the hexagonal wrench to press the valve core pin...

Страница 21: ...e gas service port 4 Air purging of the charge hose Open the low pressure valve on the charge set slightly to purge air from the charge hose 5 Set the 2 way valve to the close position 6 Operate the a...

Страница 22: ...es After purging the air use a torque wrench to tighten the flare nut to on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the va...

Страница 23: ...the valves Low side on the charge set and discharge the refrigerant until the gauge indicates 0 05 to 0 1 Mpa If there is no air in the refrigeration cycle the pressure when the air conditioner is not...

Страница 24: ...pa 76 cmHg vacuum of 4 mmHg or less 3 Close the valve Low side on the charge set turn off the vacuum pump and confirm that the gauge needle does not move approximately 5 minutes after turning off the...

Страница 25: ...efrigerant if can be charged with a little at a time approximately 150g each time0 while operating the air conditioner in the cooling cycle however one time is not sufficient wait approximately 1 minu...

Страница 26: ...oling mode Outdoor temperature Dry bulb temp Indoor Conditions Pressure 25 C 30 C 35 C 40 C 45 C 50 C 21 C D 15 C W Pressure kg cm2 6 2 6 7 7 2 8 0 8 5 9 4 24 C D 17 C W Pressure kg cm2 6 3 6 5 7 5 8...

Страница 27: ...ions Pressure 25 C 30 C 35 C 40 C 45 C 50 C 21 C D 15 C W Pressure kg cm2 7 8 8 1 8 4 9 0 9 3 10 0 24 C D 17 C W Pressure kg cm2 7 9 8 2 8 7 9 0 9 5 10 1 27 C D 19 C W Pressure kg cm2 8 0 8 5 9 2 9 9...

Страница 28: ...ions Pressure 25 C 30 C 35 C 40 C 45 C 50 C 21 C D 15 C W Pressure kg cm2 8 4 8 5 8 8 8 9 9 4 9 9 24 C D 17 C W Pressure kg cm2 8 6 8 8 9 2 9 4 10 0 10 4 27 C D 19 C W Pressure kg cm2 8 8 9 2 9 4 9 8...

Страница 29: ...07 Sensitive capacity kW 1 57 1 59 1 57 1 55 1 53 1 54 Input kW 0 71 0 79 0 87 0 95 1 03 1 10 10 2 MSQ 07HR SUMMER OUTDOOR TEMPERATURE DRY Indoor Conditions 25 C 30 C 35 C 40 C 45 C 50 C 21 C D 15 C...

Страница 30: ...ATURE DRY Indoor Conditions 25 C 30 C 35 C 40 C 45 C 50 C 21 C D 15 C W Total capacity kW 2 44 2 32 2 16 1 98 1 82 1 70 Sensitive capacity kW 1 68 1 63 1 56 1 48 1 40 1 34 Input kW 0 87 0 95 1 02 1 09...

Страница 31: ...57 Input kW 0 89 0 97 1 05 1 14 1 22 1 30 32 C D 23 C W Total capacity kW 3 12 2 98 2 86 2 76 2 63 2 50 Sensitive capacity kW 1 83 1 85 1 84 1 81 1 78 1 79 Input kW 0 88 0 98 1 07 1 17 1 27 1 37 WINT...

Страница 32: ...tive capacity kW 2 56 2 59 2 57 2 53 2 50 2 51 Input kW 1 15 1 26 1 43 1 53 1 66 1 80 10 6 MSQ 12HR SUMMER OUTDOOR TEMPERATURE DRY Indoor Conditions 25 C 30 C 35 C 40 C 45 C 50 C 21 C D 15 C W Total c...

Страница 33: ...3 64 2 31 1 90 1 83 Input kW 1 36 1 29 1 14 0 96 0 88 0 84 18 C Capacity kW 4 39 3 92 3 52 2 18 2 00 1 84 Input kW 1 50 1 29 1 16 1 03 0 97 0 87 20 C Capacity kW 4 36 3 96 3 49 2 07 1 84 1 80 Input kW...

Страница 34: ...ing temperature TE7 Evaporator high temperature protection compressor off temperature TE8 Evaporator high temperature protection fan off temperature TE9 Evaporator high temperature protection restorin...

Страница 35: ...s off for continuously 4 times due to current protection in 5 minutes from Compressor On the unit stops and LED displays failure information and can t returns to normal operation automatically 11 4 Fa...

Страница 36: ...Compressor and Outdoor Fan LOW ON 6minutes BREEZE OFF 4minutes LOW ON 5minutes BREEZE OFF 5minutes LOW ON 4minutes BREEZE OFF 6minutes A B C Repeat on and off cycle 11 6 4 Low room temperature protec...

Страница 37: ...mpressor must run for 7 minutes after starting and then judge temperature Meanwhile other protections are still valid Ts 2 T Room temp up Room temp down Ts 3 Compressor and outdoor fan off Compressor...

Страница 38: ...for the first time 11 8 Defrosting mode available for heating mode 11 8 1 Defrosting condition Defrosting starts when either of the following A and B are satisfied A The compressor keeps running for 4...

Страница 39: ...ng Actions Defrost 10or 7 5minutes 45S 25S Compressor 4 way Valve 23S 40S Outdoor Fan Indoor Fan 10S 11 9 Auto mode 11 9 1 The air conditioner automatically selects one of the following operation mode...

Страница 40: ...urs later the set temperature will maintain as a constant and the air circulation is kept at low speed Cold air proof function takes precedence over all The total time is 7 hours after 7 hours the uni...

Страница 41: ...A 8A 8A IRESTORE 4 2A 4 2A 5A 5A 6A 6A IDEFROST 3 2A 4 5A 5 5A TE1 28 28 28 TE2 32 32 32 TE3 30 30 30 TE4 20 20 20 TE5 2 2 2 2 2 2 TE6 7 7 7 7 7 7 TE7 60 60 60 TE8 53 53 53 TE9 50 50 50 ANGLCOOL 200 2...

Страница 42: ...EEROM error On No over zero signal Extinguish Flash at 5Hz 13 2 For all heat pump model Failure phenomenon Operation lamp Timer lamp Defrosting lamp Over current protection of the compressor occurs 4...

Страница 43: ...pply outputs to indoor PCB Check if AC 220V exists at the primary coil of transformer Yes YES No Check if AC 14 5V exists at the secondary coil of transformer Indoor PCB is defective Take off the seco...

Страница 44: ...CB check if the failure realease Yes After changing indoor fan motor check if the failure realease Yes YES Yes Power supply circuit has problems Indoor PCB is defective 13 5 Operation lamp flashes and...

Страница 45: ...ntrol board check if the failure realease Power supply fault No Outdoor unit fault such as the compressor 13 8 Operation lamp on and Timer lamp flashes EEROM error indoor PCB is defective 13 9 Operati...

Страница 46: ...53 3 0707 0 35 2024 27 9 1245 54 2 959 1 33 3269 28 8 7198 55 2 8442 2 31 5635 29 8 3357 56 2 7382 3 29 9058 30 7 9708 57 2 6368 4 28 3459 31 7 6241 58 2 5397 5 26 8778 32 7 2946 59 2 4468 6 25 4954...

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