Trane 4TXK6512G1000AA, Service Manual, Page: 182 / 187

10.9 4TXK6536G1000AA 4TXK6548G1000AA 4TXK6560G1000AA failure code
Error
code Indoor
display
Malfunction Description Diagnosis and Analysis
01 F1 EEPROM fault
EEPROM chip damaged or data wrong or related circuit
damaged
02 F2
PIM (power intelligent module)
hardware over current
Input over current occured been detected by PIM’s hardware
03 F3
Compressor over current during
deceleration
Over current occured during compressor deceleration period
04 F4
Communication abnormal between
control board and compressor
driver module
Control board can not communicating with compressor driver
module over 4 minutes
05 F5
Compressor overcurrent detected
by control board
Compressor over current been detected by control board
06 F6 DC voltage or AC voltage high
AC power supply of the driver module get voltage over 280VAC
or driver module get high DC-BUS voltage over 390VDC
07 F7
Compressor current sampling
circuit fault
The driver module’s Compressor current sampling
circuit damaged
08 F8
Discharge temperature too high
protection
Compressor discharge temperature over 115°C,error clear within
3 minutes if temperature goes down and lower than 115°C. Error
status lock if it occurs 3 times in 1 hour.
09 F9 DC fan motor fault
DC fan motor damage or not connected or related circuit broken.
Error status confirm and lock if occurs 3 times within 30 minutes
10 F10
Outdoor defrosting temp. sensor
Te abnormal Sensor temperature been detected below -55°C or higher
than 90 °C
11 F11 Suction temp.sensor Ts abnormal or been detected as short circuit or open circuit.
12 F12
Outdoor ambient temp. sensor Ta
abnormal
Sensor temperature been detected below -40°C or higher than
90 °C
or been detected short circuit or open circuit
13 F13
Discharging temp. sensor Td
abnormal Sensor temperature been detected below -40°C or higher
than 150 °C or been detected short circuit or open circuit .
14 F14 PFC circuit loop high voltage
Overvoltage been detected in driver module’s power factor
correction circuit loop.
15 F15
Communication abnormal between
indoor unit and outdoor unit
Outdoor unit control board can not communicating with intdoor
unit control board over 4 minutes
16 F16
Lack of refrigerant or discharging
pipe blocked
Discharge & suction temperatureTd-Ts≥80°Cafter compressor
started 10 minutes.Error status lock if it occurs 3 times in 1 hour.
17 F17 4-way vavle converse abnormal
Indoor pipe & indoor ambient temperatureTm-Tai≥-2°C after
compress-or started 10 minutes.Error status lock if it occurs 3
times in 1 hour.
18 F18
Compressor motor
desynchronizing
Rotor desynchronizing occured ,caused by overload or load
sharply fluctuating or compressor current sensor cicuit
abnormal or one of the inverter’s gate drive signal missing
150