GMV DC Inverter VRF
63
7 Error Indication
Inquiry method of malfunction display: combine division number and content number to
check the corresponding malfunction.
Indoor:
Malfunction of lower water
temperature sensor of water tank
Malfunction of ambient temperature
sensor
Auxiliary heating protection
Malfunction of entry-tube
temperature sensor
Malfunction of exit-tube temperature
sensor
Abnormal power supply for wired
controller
Malfunction of humidity sensor
Freeze prevention protection
Malfunction of water temperature
sensor
Malfunction of jumper cap
Power supply is insufficient
Web address of IDU is abnormal
For single control over multiple units,
number of IDU is inconsistent
PCB of wired controller is abnormal
For single control over multiple units,
IDU series is inconsistent
Setting capacity of DIP switch code
is abnormal
Alarm due to bad air quality
Malfunction of air outlet temperature
sensor
IDU is not matching with outdoor unit
Malfunction of indoor CO
2
sensor
Malfunction of water flow switch
Malfunction of upper water
temperature sensor of water tank
Rotation speed of EC DC water
pump is abnormal
Malfunction of backwater
temperature sensor
Malfunction of shunt valve setting
Malfunction of inlet tube temperature
sensor of generator
Setting of functional DIP switch code
is wrong
Malfunction of drainage pipe
temperature sensor of generator
Zero-crossing malfunction of PG
motor
Indoor unit’s branch is not
inconsistent for one-to-more unit of
heat recovery system
Malfunction of solar power
temperature sensor
Malfunction of swing parts