Gree EJ51000061, Руководство по обслуживанию

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37
Rooftop Packaged
Service Manual
MAINTENANCE
1 BLE TABLE
Malfunction
Phenomenon
Possible Causes Troubleshooting
Axial flow fan does not run
Power cord of fan motor is in poor contact or broken
Re-connect power cord
Fan motor has malfunction
Repair or replace motor
Capacitor in fan motors return circuit is burnt out Replace Capacitor
Air flow volume becomes
lower or no air from
air outlet of unit
Power cord of centrifugal fan is in poor contact or broken
Re-connect power cord
Centrifugal fan has malfunction Repair or replace motor
Filter in air return box is blocked
Clean filter
Capacitor in centrifugal fans return circuit is burnt out
Replace capacitor
Compressor can
not start up
Power cord of compressor is in poor contact or broken Re-connect power cord
Compressor has malfunction
Repair or replace compressor
Capacitor in centrifugal compressors return circuit is burnt out Replace Capacitor
Unit can not start
up for cooling
Power supply is stopped and fuse burns out or circuit breaks
Resume power supply and
replace fuse or re-connect circuit
Power switch is not switched on or in poor contact
Repair or replace power switch
to switch on power supply
Improper connection of power cord Re-connect power cord
Electrical elements in electric box are damaged
Replace damaged elements
Poor cooling effect
Compressor has malfunction Repair or replace compressor
Axial flow fans motor has malfunction Repair or replace motor
Centrifugal fan has malfunction
Repair or replace motor
Condenser is blocked by sundries Clear sundries
Filter in air return box is blocked
Clean filter
Piping system,capillary or strainer is blocked
Clean or replace it
after disassembly
Shortage of refrigerant or nozzle for adding freon leaks refrigerant
Replace the nozzle
for adding freon
Installation location of unit does not conform to requirements or there
are some factors around the unit which affects heat dispersion of unit
Eliminates affected factors or re-
select installation location of unit
Noise or abnormal
vibration of unit
Installation of unit or pedestal does not meet requirements
Re-install unit or eliminate
affected factors
Loose of compressors holding bolt or strenuous vibration of compressor Adjust tightness of compressor
Loose of fan bracket, motor is not tightened, or strenuous vibration of fan Tighten loose part
Fan motor has malfunction
Repair or replace motor
Compressor has malfunction Repair or replace compressor