1
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Troubleshooting
Service manual
15
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
Possible cause:
Faulty compressor or miswiring of the compressor power
supply cable.
3
Perform a check of the main PCB. See
74].
Possible cause:
Faulty main PCB.
4
Check if the power supply is conform with the regulations. See
Possible cause:
▪
Faulty or disturbance of the power supply (imbalance >4%),
▪
Power drop,
▪
Short circuit.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
1.5.12 EA-00 – Outdoor unit: Cool/heat switchover problem
Trigger
Effect
Reset
Room thermistor is NOT
functioning within
operation range.
Unit will NOT stop
operating.
Automatic reset after a
continuous operation for
some time.
If the error 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
Perform a check of the 4‑way valve. See
Possible cause:
Faulty 4‑way valve.
2
Perform a check of the main PCB. See
74].
Possible cause:
Faulty main PCB.
3
Perform a check of the indoor unit air (room) thermistor. See
117].
Possible cause:
Faulty indoor unit air (room) thermistor.
4
Perform a check of the indoor unit main PCB. See
67].
Possible cause:
Faulty indoor unit main PCB.
5
Check that all stop valves of the refrigerant circuit are open. See
Possible cause:
Closed stop valve in the refrigerant circuit.
6
Check if the refrigerant circuit is clogged. See
Possible cause:
Clogged refrigerant circuit.
7
Check if the refrigerant circuit is correctly charged. See
Summary of Contents for Sensira Series
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