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5. Start failuremalfunction

Main checking points: 

ƽ

ƽ

If the stop duration of the compressor is sufficient;

If the connection wire of the compressor is connected properly;

ƽ

If the compressor is broken;

Flow chart:

ƽ

If the refrigerant charging amount is too much;

;

Energize and

 start the unit

If the stop duration of the compressor

is longer than 3min

no

no

no

no

no

no

yes

yes

yes

yes

yes

yes

If the connection wire of the compressor

is connected well and correctly

Eliminate the malfunction

Reconnect the connection wire

of the compressor according

to the wiring diagram

If the refrigerant charging

 amount is too much

Charge the refrigerant

according to the

service manual

Eliminate the malfunction

Eliminate the malfunction

Replace the compressor

End

Replace the outdoor 

mainboard

The stop duration of the unit is 

not enough, the high and low

pressure of the system is not

balanced, restart it after 3min

Содержание GWHD(18)NK3FO

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Страница 4: ...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 9: ...able for 14K 18K model C2 C3 D3 D2 B3 B2 A2 A3 A1 A unit electronic expansion valve B1 B unit electronic expansion valve C1 C unit electronic expansion valve D1 D unit electronic expansion valve A2 A...

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Страница 11: ...C and N DC at AP1 is higher than 30V to prevent the risk of electrical shock 6 7 29 203 2 7 50 1 203 1 7 7 1 8 1 8 8 7 1 32 5 1 1 7 6 1625 8 9 3 5 8 8 5 9 8 3 0DLQ RDUG 1 1 1 3 3 1 1 8 8 1 8 8 1 8 20...

Страница 12: ...TA 2 XT1 LX2 1 LX2 2 5 5 5 5 5 N1 RT1 RT3 X1 W W V U V U COMP P HPS RT2 AC L N2 3 2 L2 XTC CONNECTOR XTD 2 3 0RGHO 1 2 Please don t touch any terminal when the voltage of terminal P DC and N DC at AP1...

Страница 13: ...rminal 5 High pressure protection terminal 6 Low pressure protection terminal 7 Outdoor fan terminal 8 Terminal of chassis electric heating belt 9 4 way valve terminal 10 Terminal of compressor electr...

Страница 14: ...ssor electric heater 8 Outdoor fan terminal 9 4 way valve terminal 10 Unit A liquid valve and gas valve temp sensor 11 Unit B liquid valve and gas valve temp sensor 12 Unit C liquid valve and gas valv...

Страница 15: ...ing and then it will run in set speed The fan shall run at every speed for at least 80s When the quantity of running indoor unit is changed the unit will enter the control described in 1 3 5 1 and 1 3...

Страница 16: ...are the mode of the other indoor units to see if there is a conflict Cooling mode dry mode is in conflict with heating mode b Fan mode is in conflict with heating mode and the heating mode is the basi...

Страница 17: ...ough the power 2 8 Compressor Phase lacking Protection When the compressor starts if one of the three phases is detected open the compressor will enter phase lacking protection The malfunction will be...

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Страница 21: ...e joints for leaks using liquid soap or an electronic leak device 7 Turn the body of the 2 way and 3 way valves Discon nect the vacuum pump hose 8 Replace and tighten all the caps on the valves INDOOR...

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Страница 23: ...t Are the lines and pipelines correctly installed The unit may bread down or the components may be burned out Has the unit been safely grounded Are the models of lines in conformity with requirements...

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Страница 32: ...H6 Indoor ambient temperature sensor is open short circuited Hardware malfunction F1 Indoor evaporator temperature sensor is open short circuited Hardware malfunction F2 Liquid valve temperature sens...

Страница 33: ...peration status dd Mode conflict Operation status E7 Refrigerant recycling mode Operation status Fo X fan Operation status AL Defrosting or oil return in heating mode Operation status H1 Start failure...

Страница 34: ...ases Reconnect the wire of the compressor according to the correct wiring method If the resistance is normal If the resistance is above 500M Replace the compressor Replace the outdoor mainboard Please...

Страница 35: ...cking points If the mainboard is broken If the wiring of the induction is connected well and if the induction is broken Flow chart Start Check if power supply is normal Power supply is abnormal yes no...

Страница 36: ...er supply is abnormal yes yes yes no no no Check if the outdoor induction is broken The induction is broken Replace the induction Replace the outdoor mainboard Malfunction is eliminated End Turn on th...

Страница 37: ...the malfunction Eliminate the malfunction Eliminate the malfunction Replace the compressor End no no no no no no yes yes yes yes yes yes The unit appears desynchronizing as soon as energizing and sta...

Страница 38: ...on Replace the outdoor mainboard Replace the outdoor unit Replace the fan capacitor Refrigerant amount is too much Input voltage is normal connected well Check if fan terminal is Improve radiation sit...

Страница 39: ...If the wiring of the eletric expansion valve is coonected well Replace the overload protector Check the coil of the eletric expansion valve replace it if it is broken Eliminate the malfunction Reconn...

Страница 40: ...in no no no no no no yes yes yes yes yes yes If the connection wire of the compressor is connected well and correctly Eliminate the malfunction Reconnecttheconnectionwire ofthecompressoraccording to t...

Страница 41: ...tion Check whether the temperature senspr is normal according to resistance table Replace the temperature sensor with the same model Replace the controller with the same model End Eliminate the malfun...

Страница 42: ...of DC fan is connected reliably If it is loose Flow chart Start yes yes no no End Replace the outdoor mainboard If the connection wire of DC fan is loose Check if the outdoor fan is blocked by foreig...

Страница 43: ...lfunction of some indoor units De energize check if the connection wire of indoor and outdoor unit and the wire of the eletric box is connected correctly no no no Connected correctly Reconnect accordi...

Страница 44: ...d correctly Connected correctly Reconnect according to the wiring diagram Connected correctly Reconnect according to the wiring diagram De energize check if the connection wire between the outdoor mai...

Страница 45: ...low chart Start If the outdoor ambient temperature is above 53 yes yes yes no no no It is a normal protection please operate the unit after the outdoor ambient temperature has changed If the indoor an...

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Страница 49: ...ure 1 Before disassembly Complete axonometric drawing 2 Remove valve cover Remove the connection screw fixing the valve cover and then remove the valve cover 3 Remove Coping Remove the connection scre...

Страница 50: ...and then loosen the clasp to remove the front grille 5 Remove front panel Remove the screws connecting the front panel and then remove the front panel 6 Remove right side plate grille front panel righ...

Страница 51: ...t Remove the screws connecting the rear grill and the left side plate and then remove the rear grill Remove the screws fixing the left side plate with the chassis and the condenser support and then re...

Страница 52: ...blade and then remove the axial flow blade Remove the 4 tapping screws fixing the motor and disconnect the leading wire insert of the motor Then remove the motor Remove the 2 tapping screws fixing th...

Страница 53: ...lder the welding joint connecting the 4 way valve assy with compressor suction and discharge port the valve with the outlet pipe of condenser Then lift the 4 way valve assy to remove it NOTE Discharge...

Страница 54: ...sor condenser assy Remove the screws connecting the middle isolation sheet with the chassis assy and the condenser assy and then remove the middle isolation sheet Remove the 3 foot nuts fixing the com...

Страница 55: ...joint connecting the electronic expansion valve sub assy with the gas collection pipe and then remove the electronic expansion valve assy Note when unsoldering wrap the gas valve with a wet cloth com...

Страница 56: ...n remove the top panel 2 Remove grille front side plate and panel Remove Remove the 1 screw connecting the front side plate and the panel and then remove the front side plate the 2 screws connecting t...

Страница 57: ...move right side plate and left side plate Remove the screws connecting the right side plate with the chassis the valve support and the electric box and then remove the right side plate assy panel righ...

Страница 58: ...rminals and then pull the electric box upwards to remove it Remove the 4 tapping screws fixing the motor disconnect the leading wire insert of the motor and then remove the motor Remove the 2 tapping...

Страница 59: ...arefully 7 Remove Isolation sheet Remove the 3 screws fixing the isolation sheet and then remove the Isolation sheet Isolation sheet Discharge the refrigerant completely unsolder the pipelines connect...

Страница 60: ...the valve subassemblies Unsolder the welding joint connecting the gas valve and the return air pipe Remove the gas valve Note When unsoldering the soldering joint wrap the gas valve with wet cloth co...

Страница 61: ...5HPRYDO 3URFHGXUH 11 Remove condenser sub assy Remove the chassis sub assy and condenser sub assy chassis sub assy condenser sub assy...

Страница 62: ...the product specification and appearance in this manual without notice and without incurring any obligations Add West Jinji Rd Qianshan Zhuhai Guangdong China 519070 Tel 86 756 8522218 Fax 86 756 8669...

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