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129
1100 RREEGGO
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In case of maloperations the alarms are indicated by the 'Alarm in progress' symbol on the multifunctional
keypad.
To view the alarms select Menu
Service information
To reset the alarm remove its cause and reset the active alarm.
Before resetting an alarm identify and remove the cause that generate it.
Repeated reset can cause irreversibile damages as maloperation of the system itself.
In case of doubt please contact an Assistance Centre.
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U
Unniitt
EE00
Water flow failure (3 times water flow failure)
11
IDU
EE11
Or zero phaseline-to-line phase error (three-phase models have this fault code)
3333
ODU
EE22
User interface and hydraulic module communication failure
22
IDU
EE33
T1 water outlet temperature sensor failure
44
IDU
EE44
T5 water tank temperature sensor failure
55
IDU
EE55
Outdoor unit T3 temperature sensor failure
3399
ODU
EE66
Outdoor unit T4 ambient temperature sensor failure
4400
ODU
EE77
Tbt1 balance water tank upper sensor failure
66
IDU
EE88
Water flow failure (is displayed within three times, and can be recovered after
minutes)
99
IDU
EE99
Th temperature sensor failure
4411
ODU
EEAA
Outdoor unit Tp row Air temperature sensor failure
4422
ODU
EEbb
Tsolar sensor failure
77
IDU
EECC
Tbt2 balance water tank bottom Sensor failure
88
IDU
EEdd
Twin board replacement water temperature sensor failure
1100
IDU
EEEE
Hydraulic module EEprom failure
1111
IDU
PP00
Low pressure protection
5500
ODU
PP11
High pressure/exhaust temperature control switch protection
5522
ODU
PP33
Compressor overcurrent protection
5533
ODU
PP44
Tp exhaust temperature overheat protection
5544
ODU
PP55
Twin-Twout, Twout-Twin or out of the water temperature is too large protection
2266
IDU
PP66
Module protection (IPDU and IR341, check the specific content)
5555
ODU
PPbb
Anti-freezing (not a protection, the alarm light does not flash), the remote
control does not display Pb, and displays the anti-freezing icon;
2255
IDU
PPdd
Outdoor unit T3 over temperature protection
5577
ODU
PPPP
Abnormal temperature difference between inlet and outlet water
3311
IDU
1100 RREEGGO
OLLAAZZIIO
ONNEE
HH00
Indoor unit and outdoor unit communication failure (continuous 10 seconds
communication abnormality)
33
IDU
HH00
Outdoor unit and the indoor unit communication failure (No communication
within 10s)
3388
ODU
HH11
Outdoor unit and IR341 communication failure (outdoor unit and inverter
module)
3399
ODU
HH22
T2 refrigerant gas side temperature sensor failure
1122
IDU
HH33
T2B refrigerant liquid side temperature sensor failure
1133
IDU
HH44
3 L (L0/L1) failures in 1 hour report H4, unrecoverable. After H4 failure, the
latest 3 L failures can be checked (not limited to L0, L1) For example: report
L0-L4-L8-L9-L0-L1 within 1 hour, report H4 failure. Check faults are L9, L0, L1.
4444
ODU
HH55
Ta temperature sensor failure
1155
IDU
HH66
DC fan failure
4455
ODU
HH77
Abnormal supply voltage
4466
ODU
HH88
High pressure pressure sensor failure (replacement with resistance when the
external machine is not installed)
4477
ODU
HH99
Tw2 sensor fault
2200
IDU
HHAA
Plate exchanger outlet temperature sensor failure
1144
IDU
HHbb
Three consecutive PP protection and Twout
<
7°C fault; power failure recovery;
2211
IDU
HHdd
Slave and master communication failure (this failure occurs when multiple units
are connected in parallel)
2244
IDU
HHEE
Hydraulic module adapter board and hydraulic module communication failure
2233
IDU
HHFF
External unit EEPROM failure
4433
ODU
HHHH
H6 failure 10 consecutive times within 120 minutes (recovery after power off)
4488
ODU
HHPP
Cooling mode low pressure Protection (within 1h, the low pressure is less than
0.6MPa for three consecutive times, can be automatically cleared)
4499
ODU
CC77
Heat sink over temperature protection
6655
ODU
bbHH
PED small board failure
114433
ODU
FF11
DC Low bus voltage protection
114422
ODU
LL00
DC compressor module failure
111122
ODU
LL11
DC bus low voltage protection
111166
ODU
LL22
DC bus high voltage protection
113344
ODU
LL44
MC failure/synchronization/closed loop
113355
ODU
LL55
Zero speed protection
113366
ODU
LL77
Phase sequence error protection
113388
ODU
LL88
Previous and next time speed change>15Hz protection
113399
ODU
LL99
Set speed and running speed difference>15Hz protection
114411
ODU
contRoL