Error P1: High pressure fault
(for larger versions)
High pressure fault P1 is
present.
Is the electrical connection
between the high pressure
probe and the control board
established correctly?
NO
YES
Check whether the high
pressure probe is faulty.
Remove the high pressure
probe's plug and measure
the resistance. The value
should be 0.
NO
Replace the high pressure
probe.
YES
Switch the unit off.
YES
Is the outside temperature
higher than 50 °C?
NO
Is enough air fed over the
condenser?
NO
Clean the condenser.
YES
Is the condenser fan motor
running?
NO
See troubleshooting for
error E8
YES
Adjust the refrigerant
volume.
YES
Check the refrigerant
volume. Is the system over-
filled?
NO
Replace the control board.
41
