Fault Codes - Trane 4TYK8536B1000AA Technical & Service Manual

13. Troubleshooting

13.2 Fault codes

The following is the fault code table of outdoor units.
Fault
Fault description
code
Outdoor ambient
temperature
1
sensor
fault
Outdoor coil
temperature
2
sensor
fault
The unit over-cur-
3 rent
turn off fault
4 EEprom Data error
Cooling freezing
protection (the
5 indoor coil
temperature is too
low)
The communica-
tion fault between
7 the
indoor unit and
outdoor unit
52
Table 1 Outdoor fault code
Possible reasons for abnormality
1. The outdoor ambient temperature
sensor is connected loosely;
2. The outdoor ambient temperature
sensor fails to work;
3. The sampling circuit fails.
1. The outdoor coil temperature
sensor is connected loosely;
2. The outdoor coil temperature
sensor fails to work;
3. The sampling circuit fails.
1. Control board current sampling
circuit fails;
2. The current is over high because
the supply voltage is too low;
3. The compressor is blocked;
4. Overload in cooling mode.
1. EE components fails;
2. EE components control circuit
fails;
3. EE components are inserted
incorrectly.
1. The indoor unit can not blow air
normally;
2. The room temperature is too low
in cooling mode or the room
temperature is too high in heating;
3. The filter is dirty;
4. The duct resistance is too high to
resulting in low air flow;
5. The setting fan speed is too low;
6. The indoor unit is not installed in
accordance with the installation
standards, and the air inlet is too
close to the air outlet .
1. The connection cable is connected
improperly between the indoor unit
and outdoor unit;
2. The communication cable is
connected loosely;
3. The communication cable fails;
4. The indoor control board fails;
5. The outdoor control board fails;
6. Communication circuit fuse open;
7. The specification of communication
cable is incorrect.
How to deal with
1. Reconnect the outdoor
ambient temperature sensor;
2. Replace the outdoor ambient
temperature sensor
components;
3. Replace the outdoor control
board components.
1. Reconnect the outdoor coil
temperature sensor;
2. Replace the outdoor coil
temperature sensor
components;
3. Replace the outdoor control
board components.
1. Replace the electrical control
board components;
2. Normal protection;
3. Replace the compressor;
4. Please see Table 2.
1. Replace the EE components;
2. Replace the outdoor control
board components;
3.Reassemble the EE
components.
1. Check whether the indoor fan,
indoor fan motor and evaporator
work normally;
2. Normal protection;
3. Clean the filter;
4. Check the volume control valve,
duct length etc.;
5. Set the speed with high speed;
6. Reinstall the indoor unit
referring to the user manual to
change the distance between the
indoor unit and the wall or ceiling.
1. Reconnect the connection cable
referring to the wiring diagram;
2. Reconnect the communication cable;
3. Replace the communication cable;
4. Replace the indoor control board;
5. Replace the outdoor control board;
6. Check the communication circuit,
adjust the DIP switch and the short-
circuit fuse;
7. Choose suitable communication
cable referring to the user manual.
Remarks
SS-SVM001A-EM