Daikin Sensira Series, Service Manual, Page: 8 / 172

1 | Troubleshooting
Service manual
8
FTXF20~71A + FTXF20~25B + FTXF20~42C + ATXF20~71A + ATXF20~42C
+ RXF20~71A + RXF20~60B + RXF20~42C + ARXF20~71A + ARXF20~42C
Split Sensira R32
ESIE18-12E – 2021.02
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
1.5.2 A5-00 – Outdoor unit: High pressure peak cut / freeze protection problem
Trigger Effect Reset
During cooling operation,
indoor heat exchanger
temperature is below 0°C
(freeze‑up protection
control). Unit will stop operating. Automatic reset when
temperature is within
range.
During heating operation,
indoor heat exchanger
temperature is above
65°C (heating peak‑cut
control).
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Check for objects near the indoor unit that may block the airflow. See
"3.3 External factors" [
4
136].
Possible cause: Airflow of the indoor unit is blocked.
2 Clean the air filter of the indoor unit(s). See "4 Maintenance" [
4
138].
Possible cause: Faulty or dirty air filter.
3 Clean the indoor unit heat exchanger. See "4 Maintenance" [ 4 138].
Possible cause: Dirty indoor unit heat exchanger.
4 Perform a check of the indoor unit heat exchanger thermistor. See
"2.13 Thermistors" [
4
117].
Possible cause: Faulty indoor unit heat exchanger thermistor.
5 Perform a check of the indoor unit main PCB. See "2.6 Indoor unit main
PCB" [
4
67].
Possible cause: Faulty indoor unit main PCB.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.