Error code:
P2 (with units with a thermal contact)
Reason:
If the test voltage of the thermal contact does not lie at 5 V, then the display shows the
error message “P2”
Cause:
n
Faulty supply voltage
n
Refrigerant low or cooling circuit blocked
n
Faulty control board
Check the air flow
volumes of the
indoor unit and out-
door unit. Are they
blocked or dirty?
YES
Clean the filter or heat exchanger and ensure a sufficient air flow volume.
NO
Switch off the power
supply to the unit
and switch it on
again after 10 mins.
Does the unit start
up?
YES
Check the tempera-
ture of the com-
pressor. Has it
heated up?
NO
Check the thermal contact. Is it correctly connected?
YES
NO
Measure the resistance of the thermal contact.
Is it 0?
Connect it correctly.
YES
YES
NO
Replace the thermal
contact.
Check the cooling
circuit. Is this OK?
YES
Replace the control board of the outdoor unit.
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