Troubleshooting - Trane CXAJ series Installation, Operation And Maintenance Manual

Troubleshooting

Fault Alarm Table for Controller (N Type)
If the single unit controller and the control panel are faulty, the code "EE" will be
displayed.
13 fault input alarm switches and 1 fault output alarm switch are arranged for the single-compressor system.
No. Input Port
Short circuit / open circuit of water
1 TH1
Short circuit / open circuit of water
2 TH2
Short circuit / open circuit of suction
3 TH3
4 TH4
5 OVHT/HP2
6 FLOW
7 OV-PUMP
8 OV-FAN
9 OV-COMP1
10 HP1 High pressure alarm of compressor 1
11 LP1 Low pressure alarm of compressor 1
12 / / /
13 / / /
50
Fault Description
inlet temperature sensor
outlet temperature sensor
temperature sensor 1
Short circuit / open circuit of
defrosting temperature sensing
sensor
Overload of electrical heater
Lack of water flow
Overload of water pump
Overload of fan
Overload of compressor 1
Low refrigeration water outlet
temperature
Low suction temperature
Type Code
A SE
A SL
A Sd
A S1
B H2
D FL
B OP
B OF
C C1
C H1
C L1
D E3
D E4
Fault Handling
Turn off all external devices
Turn off all external devices
Turn off all external devices
Turn off all external devices
Turn off all external devices
Turn off all external devices
Turn off all external devices
Turn off all external devices
Only switch off the compressor
1
Only switch off the compressor
1
Only switch off the compressor
1
Switch off the compressor. The
auxiliary heater for the water
pump operates.
Switch off the compressor. The
auxiliary heater for the water
pump operates.