Remote Controller
System check
Fault Code Table
Code
2
Safety Input
3
Frozen plates exchanger (see unit manual for more information)
4
Actual Refrigerant Temperature Sensor (TR)
5
Outdoor Air Sensor of GMC
6
Loss communication to NUI control
7
NUI control Room Sensor
9
Flow Switch error / Water Pump
10
EEProm Corrupt
11
User interface setting mismatch
12
4 Way valve error
13
Loss Communication to RS485 (system configuration type 6)
14
Loss of Signal From inverter board or High Temperature Release
15
Exit water Temperature Sensor (LWT)
16
Alarm test
17
Inverter Air Sensor (TO)
18
G-Tr inverter short circuit protection
20
Compressor position Detection Circuit error
21
Inverter Current Sensor error
22
Heat Exchanger Sensors (TE) / (TS)
23
Discharge Temperature Sensor (TD)
24
Outdoor Fan motor error
26
Other unit error
27
Compressor Lock
28
Discharge Temperature error
29
Compressor Breakdown
30
Low pressure system error
31
High pressure system error
GB - 4
Fault