Chapter 4 Maintenance; Part 1 Failure Code Table; System Failure Code Table - Gree Ultra Heat GMV Multi VRF Heat Recovery Series Service Manual

Ultra Heat GMV VRF Technical Service Manual_Heat Recovery Serial

CHAPTER 4 MAINTENANCE

PART 1 FAILURE CODE TABLE

1 SYSTEM FAILURE CODE TABLE

Check the following items before contacting for repair.
Indoor:
Error Code
Malfunction of IDU
L0
Protection of indoor fan
L1
Auxiliary heating protection
L2
Water-full protection
L3
Abnormal power supply for wired controller
L4
Freeze prevention protection
L5
No main IDU
L7
Power supply is insufficient
L8
For single control over multiple units,
L9
number of IDU is inconsistent
For single control over multiple units, IDU
LA
series is inconsistent
Alarm due to bad air quality
LH
IDU is not matching with ODU or IDU
running mode is inconsistent with ODU
LC
allowed mode
Malfunction of water flow switch
LL
Rotation speed of EC DC water pump is
LE
abnormal
Malfunction of shunt valve setting
LF
Setting of functional DIP switch code is
LJ
wrong
Zero-crossing malfunction of PG motor
LP
Indoor unit's branch is not inconsistent for
LU
one-to-more unit of heat recovery system
Indoor PCB is poor
d1
Content Error Code
Malfunction of lower water temperature
d2
sensor of water tank
Malfunction of ambient temperature sensor
d3
Malfunction of entry-tube temperature
d4
sensor
Malfunction of exit-tube temperature sensor
d6
Malfunction of humidity sensor
d7
Malfunction of water temperature sensor
d8
Malfunction of jumper cap
d9
Web address of IDU is abnormal
dA
PCB of wired controller is abnormal
dH
Setting capacity of DIP switch code is
dC
abnormal
Malfunction of air outlet temperature sensor
dL
Malfunction of indoor CO2 sensor
dE
Malfunction of upper water temperature
dF
sensor of water tank
Malfunction of backwater temperature
dJ
sensor
Malfunction of inlet tube temperature sensor
dP
of generator
Malfunction of drainage pipe temperature
dU
sensor of generator
Debugging status
db
Malfunction of solar power temperature
dd
sensor
Malfunction of swing parts
dn
117
MAINTENANCE
Content