0 75 MAINTENACE
GMV5 COMPACT MULTI VRF UNIT
SERVICE MANUAL
Only the outdoor unit displays the code
Note: Last ten protection shutdown and protection limited frequency reduction can be searched through the
debugging controller.
1.1.4 The meaning of indicator light flicker for mainboard and drive board.
Outdoor unit is always at
ON status
Limited frequency reduction
for IPM temperature
protection
Limited frequency reduction
for pfc temperature
protection
Limited frequency reduction
for AC current protection
Limited frequency reduction
for power protection
Limited frequency reduction
for discharge temperature
protection
Limited frequency reduction
for low pressure protection
System low pressure
protection
Limited frequency reduction
for high pressure protection
System high pressure
protection
Malfunction of discharge
temperature sensor of
compressor 1
High-pressure switch
protection
Malfunction of outdoor
ambient temperature sensor
Drive charging circuit
malfunction of compressor
Malfunction of outdoor tube
temperature sensor
Malfunction of suction
temperature sensor
Malfunction of EEPROM
chip
Malfunction of indoor coil
inlet temperature sensor
Demagnetization protection
for compressor1
Malfunction of temperature
sensor for subcooler