Daikin RXTA30B2V1B, Service Manual

Page: 28 / 264

3 | Troubleshooting
Service manual
28
RXTM-R+RXTP-R+ARXTP-R+RXTA-B+FTXTA30B2V1B(W)
(B)+35M5V1B
R32 Optimized Heating 4 Split
ESIE21-12A – 2022.02
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
3.5.16 F3-00 – Outdoor unit: Malfunction of discharge pipe temperature
Trigger Effect Reset
Discharge pipe thermistor
detects a too high
temperature. Unit will NOT stop
operating. Automatic reset when
temperature drops
normal level.
If the error re-occurs too
soon: unit will stop
operating. Manual reset via user
interface.
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 Check if the refrigerant circuit is correctly charged. See "5.2 Refrigerant
circuit" [
4
211].
Possible cause: Refrigerant overcharge or shortage.
3 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.
4 Check if the refrigerant circuit is clogged. See "5.2 Refrigerant circuit" [ 4 211].
Possible cause: Clogged refrigerant circuit.
5 Perform a check of the 4‑way valve. See "4.1 4-way valve" [
4
50].
Possible cause: Faulty 4‑way valve.
6 Perform a check of the expansion valve. See "4.4 Expansion valve" [
4
72].
Possible cause: Faulty expansion valve.
7 Perform a check of the main PCB. See "4.14 Main PCB" [
4
126].
Possible cause: Faulty main PCB.
8 Perform a check of all refrigerant side thermistors. See
"4.22 Thermistors" [ 4 195].
Possible cause: Faulty refrigerant side thermistor(s).
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.