Daikin RXTA30B2V1B, Service Manual

Page: 24 / 264

3 | Troubleshooting
Service manual
24
RXTM-R+RXTP-R+ARXTP-R+RXTA-B+FTXTA30B2V1B(W)
(B)+35M5V1B
R32 Optimized Heating 4 Split
ESIE21-12A – 2022.02
3.5.11 E5-00 – Outdoor unit: Overheat of inverter compressor motor
Trigger Effect Reset
Compressor overload is
detected. Unit will NOT stop
operating. Automatic reset if the unit
runs without warning for
60 seconds.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Check that all stop valves of the refrigerant circuit are open. See
"5.2 Refrigerant circuit" [
4
211].
Possible cause: Closed stop valve in the refrigerant circuit.
2 Perform a check of the discharge pipe thermistor. See
"4.22 Thermistors" [
4
195].
Possible cause: Faulty discharge pipe thermistor or connector fault.
3 Perform a check of the outdoor unit fan motor. See "4.15 Outdoor unit fan
motor" [ 4 135].
Possible cause: Faulty outdoor unit fan motor.
4 Perform a check of the compressor. See "4.2 Compressor" [
4
57].
Possible cause: Faulty compressor or miswiring of the compressor power
supply cable.
5 Perform a check of the expansion valve. See "4.4 Expansion valve" [
4
72].
Possible cause: Faulty expansion valve.
6 Perform a check of the 4‑way valve. See "4.1 4-way valve" [ 4 50].
Possible cause: Faulty 4‑way valve.
7 Perform a check of the main PCB. See "4.14 Main PCB" [ 4 126].
Possible cause: Faulty main PCB.
8 Check if the refrigerant circuit is correctly charged. See "5.2 Refrigerant
circuit" [
4
211].
Possible cause: Refrigerant shortage.
9 Check for the presence of non‑condensables and/or humidity in the
refrigerant circuit. See
"5.2 Refrigerant circuit" [
4
211].
Possible cause: Non‑condensables and/or humidity in the refrigerant circuit.
10 Check if the refrigerant circuit is clogged. See "5.2 Refrigerant circuit" [
4
211].
Possible cause: Clogged refrigerant circuit.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.