Fault Code Table - Carrier 33AW-CS1 Installation Manual

Operational and connection information

Fault Code Table

Code
2 Safety Input
3 Enter water Temperature Sensor (EWT)
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
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
Fault
17