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Troubleshooting
Service manual
52
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
3.3.47 F6-00 – Outdoor unit: Abnormal high pressure in cooling
Trigger
Effect
Reset
Outdoor heat exchanger
thermistor measures a
too high temperature.
Unit will NOT stop
operating.
Automatic reset when
temperature drops.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Clean the outdoor heat exchanger. See
Possible cause:
Dirty outdoor heat exchanger.
2
Check that all stop valves of the refrigerant circuit are open. See
256].
Possible cause:
Closed stop valve in the refrigerant circuit.
3
Perform
a
check
of
the
heat
exchanger
thermistor.
See
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
256].
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
256].
Possible cause:
Clogged refrigerant circuit.
9
Perform a check of the outdoor unit fan motor. See
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.
3.3.48 FA-00 – Outdoor unit: Abnormal high pressure, actuation of high pressure switch
Trigger
Effect
Reset
Outdoor heat exchanger
thermistor measures a
too high temperature.
Unit will NOT stop
operating.
Automatic reset when
temperature drops.
draft – 31/05/2022 15:53
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