Actions with operating disturbances 11
For Home Owners
Error code A - 01
■ Indication that the air filter needs to be cleaned
(error code is shown every third month).
When the filter has been cleaned reset the fault code
by turning the heat pump off and on again.
Error code A - 03
A high pressure or low pressure pressostat in the
refrigerant circuit has tripped, see the section Reset-
ting pressostats.
■
High pressure pressostat: Settings for Heating
curve selection and Heating curve offset too high
(can also be seen on Channels 6 and 7 on the
numerical display). Also see section Room temper-
ature.
■
Low pressure pressostat: Ventilation flow too low
or not enough refrigerant.
When the cause of the fault has been rectified, the
error code must be cleared from the display by switch-
ing the heat pump off and on again.
Midmost lamp lit
■ Defrosting.
When there is too much ice on the evaporator,
defrosting takes place. After this, the compressor
starts automatically if heating is needed. Frequent
defrosting is a sign of clogged ventilation or dirty filter.
See the section Maintenance routines - Cleaning the
air filter.
Error code A - 011
This code is shown when A - 03 and A - 01 are active
simultaneously.
When the cause of the fault has been rectified, the
error code must be cleared from the display by switch-
ing the heat pump off and on again.
FIGHTER 600P
Indications on the display
■ Shut down FIGHTER 600P by turning the switch
(8) to “0”.
■ The upper service cover is opened by pulling the
lower section outwards. The cover can then be lift-
ed off.
■ The inner cover is secured by a magnetic strip on
the lower edge.
■ Loosen the venting screw with a screwdriver. Hold
a cloth around the screwdriver blade as a certain
amount of water may run out.
■ Insert a screwdriver and turn the pump rotor.
■ Screw in the air screw.
■ Start FIGHTER 600P and check whether the circu-
lation pump runs.
It is usually easier to start the circulation pump with
FIGHTER 600P running, switch (8) set to “1”. If help-
ing the circulation pump to start is performed with
FIGHTER 600P running, be prepared for the screw-
driver to jerk when the pump starts.
High extract air temperature
If the extract air temperature (read on channel 5) is
only insignificantly lower than the room temperature at
the same time as the compressor is operational, this
indicates a probable fault in the refrigerant circuit or its
controller. Request a service.
When the compressor is not operational the extract air
temperature lies at about the same level as the room
temperature.
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