Fault Handling; Fault Alarm Table - Trane CXAJ065 Maintenance Manual

7

Fault Handling

7-1. Fault Alarm Table

If the controller and the control panel are faulty, the code "EE/ED" will be displayed.
No. Input Port
1 TH1 No.1 analog sensor fault (water inlet temperature)
2 TH2 No.2 analog sensor fault (water outlet temperature)
3 TH3 No.3 analog sensor fault (suction temperature A)
4 TH4
5 TH5 No.5 analog sensor fault (discharge temperature A-1)
6 TH6 No.6 analog sensor fault (discharge temperature A-2)
7 TH7 No.7 analog sensor fault (ambient temperature)
8 TH8 No.8 analog sensor fault (suction temperature B)
9 TH9
10 TH10 No.10 analog sensor fault (discharge temperature B-1)
11 TH11 No.11 analog sensor fault (discharge temperature B-2)
12 TH12 No.12 analog sensor fault (total water outlet temperature)
13 CN13
14 CN14
15 IND3
16 IND4
17 IND5
18 IND6
19 IND8
20 IND9
21 CN13
22 CN14
TH1,TH2
23 and
TH1TH2
24 TH3, TH8
25 CN13
26 CN14
27 CN15
28 CN16
29 TH7 The ambient temperature exceeds the working range
30 CN29 Communication fault between control panel and modular controller
31 CN4/XP1 Communication fault between single unit controller and mainboard
TH5/TH6/
32
TH10/TH11
33 --
34 --
Note: The faults in this table are only displayed on the single unit controller and the modular controller.
Note 1: When this fault occurs, switch off all compressors. The water pump will continuously operate.
Note 2: Lock "antifreezing locking time of plate type heat exchanger for refrigeration unit". the fault is permitted to be manually reset only when
the water temperature is recovered to the normal state.
Note 3: This alarm code will be displayed only when "module control" is selected. Note 4: This alarm code will be displayed only when
"module control" is selected and it is a host unit (A0).
In case of fault, the controller and the centralized controller will show corresponding fault code and conduct fault handling, the alarm output
relay will be closed.
When all the fault input terminals are disconnected, it means fault alarm; when all the fault input terminals are closed, it means normal.
After the fault is cleared, the system will maintain fault status (to remind user for unit inspection). The system will restore the operating status
before the fault only after user press the "Reset" key (only reset one fault at a time in case of multiple faults) or restart the unit.
All the faults must be reset manually.
Fault Description
No.4 analog sensor fault
No.9 analog sensor fault
No.13 analog sensor fault (suction pressure A)
No.14 analog sensor fault (suction pressure B)
High-pressure switch of system B
High-pressure switch of system A
Water flow switch alarm
Overload of water pump
Overload of compressor A-1 or A-2
Overload of compressor B-1 or B-2
Low-pressure of system A
Low-pressure of system B
Refrigeration antifreezeing alarm
Abnormal suction temperature
Low pressure overrun of system A
Low pressure overrun of system B
High pressure overrun of system A
High pressure overrun of system B
Abnormal discharge temperature
Inlet and outlet of water pipe is reversed
Configuration error of model
Code of Code of
Single Unit Centralized
Controller Controller
20 20
21 21
22 22
23 23
24 24
25 25
26 26
27 27
28 28
29 29
2A 2A
2B 2B
2C 2C
2D 2D
H2 65
H1 65
FL 6D
OP 6A
C1 68
C2 69
L1 66
L2 67
Switch off all compressors. The water
E3 8D
pump continuously operates.
E4 91
The water pump continuously operates.
Switch off the compressor of the system A.
78 78 If this fault occurs twice, switch off and give
Switch off the compressor of the system B.
7A 7A If this fault occurs twice, switch off and give
Switch off the compressor of the system A.
2E 2E If this fault occurs twice, switch off and give
Switch off the compressor of the system B.
2F 2F If this fault occurs twice, switch off and give
87 87
ED --
-- EE
AC/AD/ AE/ AC/AD/ AE/
AF AF
A0 A0
E1 E1
Fault Handling
Fault Handling
Turn off devices
Turn off devices
Turn off devices
Turn off devices
Turn off devices
Turn off devices
Turn off devices
Turn off devices 2
Turn off devices
2
Turn off devices
2
Turn off devices 2
Turn off devices 4
Turn off devices
Turn off devices
2
Turn off devices 2
Turn off devices
Turn off devices
Turn off devices
Turn off devices
Turn off devices 2
Turn off devices
Turn off devices
2
1
Switch off all compressors.
12
an alarm.
an alarm.
an alarm.
an alarm.
Turn off devices
Turn off devices 2
Turn off devices
Turn off devices
Turn off devices
Turn off devices
37