F6-00 - Outdoor Unit: Abnormal High Pressure In Cooling - Daikin RXM20R Service Manual

3 | Troubleshooting
3.5.16 F6-00 – Outdoor unit: Abnormal high pressure in cooling
Service manual
28
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Trigger
Outdoor heat exchanger
thermistor measures a
too high temperature.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Clean the outdoor heat exchanger. See "6 Maintenance" [
Possible cause: Dirty outdoor heat exchanger.
2 Check that all stop valves of the refrigerant circuit are open. See
"5.2 Refrigerant circuit" [
Possible cause: Closed stop valve in the refrigerant circuit.
3 Perform a check
"4.19 Thermistors" [
Possible cause: Faulty heat exchanger thermistor.
4 Perform a check of the expansion valve. See
Possible cause: Faulty expansion valve.
5 Perform a check of the main PCB. See
Possible cause: Faulty main PCB.
6 Check if the refrigerant circuit is correctly charged. See
4
circuit" [ 207].
Possible cause: Refrigerant overcharge.
7 Check for the presence of non‑condensables and/or humidity in the
refrigerant circuit. See
Possible cause: Non‑condensables and/or humidity in the refrigerant circuit.
8 Check if the refrigerant circuit is clogged. See
Possible cause: Clogged refrigerant circuit.
9 Perform a check of the outdoor unit fan motor. See
4
motor" [ 143].
Possible cause: Faulty outdoor unit fan motor.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Effect
Unit will NOT stop
operating.
4
207].
of the heat
4
192].
"4.12 Main
"5.2 Refrigerant circuit" [
RXM20~71R(9) + ARXM25~71R(9) + FTXM20~71R + ATXM25~50R +
Reset
Automatic reset when
temperature drops.
4
217].
exchanger thermistor.
4
"4.5 Expansion valve" [
4
PCB" [ 125].
"5.2 Refrigerant
4
207].
"5.2 Refrigerant circuit" [
"4.13 Outdoor unit fan
Split New Perfera R32
ESIE20-11B – 2022.02
See
81].
4
207].
FVXM25~50A