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Display Method of Indoor Unit 

Indicator lamp   

(During blinking, ON for 0.5S 

and OFF for 0.5 S) 

 

No. 

 

 

Malfunction Name 

Error 

Code 

Operation 

Lamp 

COOL 

Lamp

   

HEAT 

Lamp 

 

A/C Status 

Possible Causes 

E1 

E2

OFF 3S and 
blinks once 
(inverter 
unit); the 
running 
indicator 
blinks 
(non-inverter 
floor 
standing 
unit); As for 
other types 
of units, 
please refer 
to the 
detailed 
function 
requirement.

 

 

During cooling and 
drying operation, except 
indoor fan operates, all 
loads stop operation. 
During heating 
operation, if it is inverter 
unit, the complete unit 
stops; if it is floor 
standing unit, the 
complete unit stops and 
operation of remote 
controller or controller is 
unavailable.   

1. The main board and the display 
panel are not connected well. 
2. The OVC terminal on main board 
is not connected well with the high 
pressure switch on the complete unit.
3. The wiring of high pressure switch 
is loosened. 
4. Refrigerant is superabundant; 
5. Poor heat exchange (including
blocked heat exchanger and bad 
radiating environment ); 
6. Ambient temperature is too high; (if 
it is 3-phase unit, the high pressure 
protection may be caused by 
overcurrent protection due to this 
reason) 
7. The supply voltage is abnormal (if 
it is 3-phase unit, the high pressure 
protection may be caused by 
overcurrent protection due to this 
reason) 
8. The air intake and air discharge at
indoor / outdoor heat exchanger are
not smooth. The air cycle is short 
circuited. 
9. Filter and heat exchange  fins of
indoor/outdoor units are blocked. 
10. The system pipeline is blocked.
11. The gas valve and liquid valve for 
outdoor unit are not completely 
opened. 
12. The OVC input is at high level. 

Freeze protection

 OFF 3S and 
blinks twice 

 

 

During cooling and 
drying operation, 
compressor and 

1. Poor air-return in indoor unit; 
2. Abnormal fan speed; 
3. Dirty evaporator; 

(inverter 
unit); 
running 
indicator 
blinks 
(non-inverter 
floor 
standing 
unit); As for 
other types 
of units, 
please refer 
to the 
detailed 
function 
requirement.

outdoor fan stop while 
indoor fan operates. 

4. System is normal, but the indoor 
tube temperature sensor is abnormal, 
or the tube temperature sensor is not 
connected well. 

High pressure 
protection   

Содержание GVA60AH-M3NNA5A

Страница 1: ...Service Manual MODEL Refrigerant R410A GREE ELECTRIC APPLIANCES INC OF ZHUHAI GVA60AH M3NNA5A...

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Страница 5: ...repair work shall be performed by your dea ler or a specialized subcontractor as there is the risk of fire electric shock explosion or injury Have all wiring connected tightly Loose connection may lea...

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Страница 11: ...HWHU LTXLG PP DV PP T I N U R O O D T U O T I N U R O O D N I HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER COMPRESSOR GAS SIDE 3 WAY VALVE LIQUID SIDE 2 WAY VALVE COOLING HEATING Accumlator Discha...

Страница 12: ...J RI PDUNV OHFWULFDO LULQJ QGRRU 8QLW 0RGHO 9 0 11 Symbol Parts name Symbol Color symbol Symbol Color symbol SAT OVERLOAD BU BLUE VT VIOLET COMP COMPRESSOR YE YELLOW OG ORANGE PROTECTIVE EARTH RD RED...

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Страница 14: ...of compressor 4 Control relay of compressor 5 Copper insert of wire of outdoor fan 6 Copper insert of wire of 4 way valve 7 Copper insert of neutral wire 8 Wiring terminal of indoor fan 9 Relay of aux...

Страница 15: ...T Press it to turn on off the light MODE icon If MODE button is pressed current operation mode icon AUTO COOL DRY FAN or HEAT is only for heat pump models will show LOCK icon is displayed by pressing...

Страница 16: ...emperature Hold it down for above 2 seconds to rapidly increase set temperature In AUTO mode set temperature is not adjustable Press this button to decrease set temperature Hold it down for above 2 se...

Страница 17: ...temperature in shortest time In COOL mode the unit will blow strong cooling air at super high fan speed In HEAT mode the unit will blow strong heating air at super high fan speed SLEEP Press this butt...

Страница 18: ...the indoor blower is on running under this mode HEAT Display the state of heating Note Single cooling machine is not equipped with heating mode Button Under the situation without setting the function...

Страница 19: ...position start up running of all loads indoor and outdoor high speed blowers besides the four way valve and then the buzzer rings After shutdown for five minutes or receiving shutdown signal within 5...

Страница 20: ...he setting temperature under the energy saving cooling function can not be adjusted The modes of living room restaurant conference office can only be called out by pressing buttons of air con ditioner...

Страница 21: ...dicate mode of restaurant RESTAURANT Common mode Indicate common mode COMMON Status of swing Display status of swing Swing BLOW Function When the typeface light is on it indicates setting the BLOW fun...

Страница 22: ...n within 6mins all the time once the compressor is stopped it can only be started up after 3mins delayed 1 Cooli ng Mode When Tamb Tpreset 1 the unit will run in cooling mode Meanwhile compressor outd...

Страница 23: ...t blowing residual heat System will defrost intelligently and automatically When it s detected that the system is reached the defrosting condition the system will turn to defrosting status After defro...

Страница 24: ...as decreased for 2 the unit will keep this temperature When initial temperature is set as 28 30 after sleep function is started up the temperature will decrease by 1 every 1hr After the temperature ha...

Страница 25: ...o function will be memorized While when switching to auto dry or fan mode the turbo function is unavailable 9 Power off Memory Function When re energizating the unit after power failure the unit will...

Страница 26: ...ube temperature is too high outdoor fan will stop running when evaporator tube temperature resumes to normal range outdoor fan will be started up 6 Overcurrent protection After compressor is started u...

Страница 27: ...sting status when restating the unit swing will keep the status before turning off the unit Fan dry and auto mode running status is the same as that in common mode SAVE mode In cooling mode setting te...

Страница 28: ...button to set it The setting will be confirmed after the setting has been set for 5 mins and there s no change for the operation In blow running status the unit will be turned off after pressing the...

Страница 29: ...racter won t be displayed Turbo when setting turbo function the character will blink when this function is selected the character will be displayed If the turbo function hasn t been selected the chara...

Страница 30: ...rflow of the unit can not be blocked 6 Select the position where the few outer air influenced 7 Select the firm and flat ground 8 Ensure sufficient clearance and space for service and maintenanc 9 Ens...

Страница 31: ...he power supply 2 Please strictly follow the instruction of this manual when installing indoor unit and its piping 3 The unit is subject to change without prior notice 4 Please read this manual carefu...

Страница 32: ...k whether eachlead wire is installed well When checking the air connector pleaseenclasp it and check each lead wire of which is connecting with the connector Requirements for earthing 1 The air condit...

Страница 33: ...Space to the wall 30cm at least for the pipe side Air outlet side Space to the obstruction Space to the wall Air outlet side Space to the wall Air inlet side above above above above above e v o b a T...

Страница 34: ...to the pipe which will cause condensation 4 After connecting check if water can discharge properly or if there is any leakage As shown in Fig 5 Electric connection Installation of connection pipe Drai...

Страница 35: ...en the screws and adjust the baffle position up and down to clamp connection pipe drainage pipeas much as possible 2 Tighten the screws 6 Recover the electric box cover Baffle Hole Screws 7 For the co...

Страница 36: ...e bend is the bigger the better 4 Don t bend the bendable pipe more than three times When bending the pipe 1 Cut some part of the insulation pipe at the place of the bend and wrap with polythene tape...

Страница 37: ...refer to the following Indoor unit piping Taper nut Piping Spanner Torque wrench NOTE Firstly connect the connection pipe to indoor unit then to outdoor unit pay attention to the piping bending and do...

Страница 38: ...a 76cmHg at manometer Then check if there is air in the pipe keep for 2 min to se e if indicated needle of manometer returns If there is re operate the vacuum pump after restoration 5 Remove charging...

Страница 39: ...tric malfunction or damage the part Is the electric wring and piping connectioninstalled correctly and securely It may cause electric malfunction or damaged the part Has the unit been connected to a s...

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Страница 44: ...on Normally diagnose troubles according to the trouble diagnosis procedure as described below Refer to the check points in servicing written on the wiring diagrams attached to the indoor outdoor units...

Страница 45: ...hanger and bad radiating environment 6 Ambient temperature is too high if it is 3 phase unit the high pressure protection may be caused by overcurrent protection due to this reason 7 The supply voltag...

Страница 46: ...There s blockage in the system filth blockage ice plug greasy blockage Y valve hasn t been opened completely OFF 3S and blinks 4 times inverter unit running indicator blinks non inverter floor standin...

Страница 47: ...please connect the wires according to the circuit diagram If the high pressure switch is broken or poorly contacted please replace it yes Malfunction is eliminated no Adjust the volume of refrigerant...

Страница 48: ...s the fan speed abnormal Solve the problem of speed Malfunction is eliminated Is the evaporator dirty Clean the evaporator Problem is solved End no yes yes no System is normal but the indoor tube temp...

Страница 49: ...e switch inserted well Re insert it tightly to ensure reliable contact Is the malfunction eliminated Replace the low pressure switch Is the higher than the acting value of the low pressure switch No Y...

Страница 50: ...6TQWDNGUJQQVKPI LJK GLVFKDUJH WHPSHUDWXUH SURWHFWLRQ RI FRPSUHVVRU Check the wiring and fan capacitor replace the motor Check the unit make the air intake and outlet smooth...

Страница 51: ...abnormally Is there abnormal sound or oil leakage is the temperature of the shell too high etc no no no no yes no no Replace the control panel End Normal fluctuation is within 10 of the rated voltage...

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Страница 55: ...LQXWHV DIWHU WXUQLQJ RII DOO SRZHU VXSSOLHV EHIRUH GLVDVVHPEO Steps Procedure Remove air in panel Remove screws fixing air in panel and then remove air in panel Remove air out panel Remove retaining s...

Страница 56: ...ove retaining screws of controller box and the cover of controller box Then remove the display panel Remove screws fixing motor and then remove the step motor Remove air guard Remove retaining screws...

Страница 57: ...box Remove retaining screws of electric box cover and then remove the cover Unplug each wiring terminal and remove components which need to be removed Remove retaining screws of electric box and then...

Страница 58: ...vaporator Remove retaining screws of connecting boards respective on the top and the bottom of evaporator Then draw the side plate outwards to remove evaporator splash plate and water tray After remov...

Страница 59: ...s of propeller housing clamp and then draw the clamp outwards to remove it Remove propeller housing Remove retaining screws of propeller housing and then remove the propeller housing propeller housing...

Страница 60: ...ntrifugal fan blade Remove nut fixing centrifugal fan blade and then remove the fan blade Remove motor Remove wire clamp on rear plate and then unplug motor wire Remove screws fixing motor and then re...

Страница 61: ...ure Remove chassis Remove screws fixing chassis and then remove the chassis Remove right and left side plates Remove screws fixing right and left side plates and then remove the side plates left side...

Страница 62: ...k grille with the back side plate the front case and the chassis Remove the back grille 2 Remove the top cover Remove the screws fixing the top cover Raise the top cover to remove it 3 Remove the fron...

Страница 63: ...e right side plate sub assembly Remove the screws fixing the right side plate Remove the right side plate 6 Remove electric box sub assembly Remove the screws fixing the electric box cover Disconnect...

Страница 64: ...Remove the motors Remove the 4 screws fixing the motors Disconnect the leading wire inserts of the motors Remove the motors 9 Remove the motor support Remove the screws connecting the motor support an...

Страница 65: ...der the 4 way valve quickly and remove it Ensure that the cloth keeps wet and do not burn the compressor lead Recover the refrigerant before unsoldering 11 Remove the compressor Unsolder the pipes con...

Страница 66: ...the welding joint between the liquid valve and the Y type connecting pipe Remove the liquid valve Note During unsoldering wrap the gas valve with a wet cloth to avoid damage to the valve caused by hig...

Страница 67: ...ng the condenser and the chassis Raise the condenser subassembly to remove it 15 Remove valve support subassembly Remove the screw connecting the valve support and the chassis Remove the valve support...

Страница 68: ...GREE ELECTRIC APPLIANCES INC OF ZHUHAI Add Jinji west Rd Qianshan Zhuhai Guangdong China Post code Tel 86 756 8522219 After sale Service Dept 519070...

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