Trane 4TXK6512G1000AA Service Manual page 174

10.2 4MXC6524G1000AA 4MXC6536G1000AA 4MXC6548G1000AA
4MXC6560G1000AA failure code
LED flash times
Panel
of indoor PCB
display
LED4 LED1
Malfunction of indoor unit ambient
0 1 1
Malfunction of indoor unit piping
0 2 2
0 4 4
7
0 7
Abnormal communication between
0 8 8
0 12 0C
0 13 0D
0 14 0E
Note:
1.The outdoor failure can also be indicated by the indoor unit,the checking method as follows: If the outdoor
error code is M(DECIMAL), the indoor unit's display board will show the after converted hexadecimal code of
"M+20"(DECIMAL). For example, if the outdoor error code is 2, the indoor unit display board will show the error
code 16 (2→2+20=22→change decimal 22 to hexadecimal code, get 16)
2.LED4 is a red one on the indoor PCB, LED1 is a yellow one.
3.To get much more details about the out door unit failure, please refer to the outdoor unit trouble shooting list.
Malfunction Description
temperature sensor
temperature sensor
EEPROM wrong of indoor PCB
Abnormal communication between
indoor and outdoor units
wired controller and indoor unit, or
I.R.RECCEIVER
Malfunction of drain system
Zero cross sigal wrong
Indoor unit DC fan motor abnormal
Sensor disconnected or broke or at wrong
position or short circuit
Sensor disconnected or broke or at wrong
position or short circuit
EEPROM chip disconnected or broken or
wrong programmed or PCB broken
Wrong connection or the wires be
disconnected or wrong address setting of
indoor unit or faulty power supply or faulty
PCB
Wrong connection or wired controller
or PCB fault
Pump motor disconnected or at wrong
position, or the float switch disconnected or
at wrong position or the short circuit bridge
disconneted
Zero cross sigal detected wrong
DC Fan motor disconnected, or DC Fan
broken or circuit broken
142
Possible reasons
broken