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9. Faults / Fault removal
C
In case of a series of High pressure, low pressure or Thermorelais faults, please contact your
customer service!
Customer service phone number:___________________________________
(
The heat pump is equipped with a variety of safety ap-
plications to protect the machine for possible faults.
If the heat pump is contrary to expectation not run-
ning, so the following things have to be checked:
Note: If the fault light “
” or “
” is shining, but no temperatu-
re is displayed at the referring thermostat, the main electricity supply is cut off. It can be a blocking
time of the electricity supply or a fault.
Over temperature
Groundwater too cold
9.1 Is the green indicator light inside the main
switch shining?
9.2 Is the humming fault light shining (see illu-
stration on page 20)?
If not:
Is the heat pump activated by the control? Look up
the referring control manual.
Is the fuse inside the heat pump console intact?
(For the position of the fuse look up the Description
of the heat pump)
Is the fuse of the primary control intact, e.g. the
EVA-system?
See referring system description..
Open the yellow lid and check the individual fault
lights, for this see 9.3 (right) and illustration on
page 12.
!
!
!
9.3 Is one of the 5 red fault lights shining?
High pressure fault
or Low pressure fault:
Motor protection:
Over temperature:
Groundwater too cold:
If one of those lights is shining switch off the
main switch and after a few seconds back on.
The heat pump is ready for operation again.
But still the function of the heating circuit
pumps should be checked.
If this light is shining the com-
pressor was overloaded. Switch off the main
switch and after a few seconds back on. The
heat pump is ready for operation again. But still
the main electricity connection should be che-
cked.
If this light is shining, the
heat pump has a too high temperature, has to
cool down and will switch back on automatical-
ly.
If this light is shining, the
groundwater return temperature out of the heat
pump is too low.
The groundwater circuit has to be checked.
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