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Troubleshooting
Service manual
17
(A)(F)TXF20~71A + FTXF20~25B + (A)(F)TXF20~42C + (A)(F)TXF20~42D +
(A)(F)TXF20~42E + (A)RXF20~71A + RXF20~60B + (A)RXF20~42C +
(A)RXF20~42D + (A)RXF20~42E
Split Sensira R32
ESIE18-12G – 2023.01
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.
2.5.2 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
163].
Possible cause:
Airflow of the indoor unit is blocked.
2
Clean the air filter of the indoor unit(s). See
165].
Possible cause:
Faulty or dirty air filter.
3
Clean the indoor unit heat exchanger. See
Possible cause:
Dirty indoor unit heat exchanger.
4
Perform a check of the indoor unit heat exchanger thermistor. See
140].
Possible cause:
Faulty indoor unit heat exchanger thermistor.
5
Perform a check of the indoor unit main PCB. See
84].
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.