Problem – Noise/Loud Noise; Problem – Defrosting Problems; Problem – Build-Up Of Ice Under And Around The Outdoor Unit - Danfoss DHP-AQ Mini Service Instructions Manual

3.5.7 Heat pump
Table 30. Problem – Noise/loud noise
Cause
1. Positioning the heat pump.
2. Connection/wall lead-ins.
Table 31. Problem – Defrosting problems
Cause
Location/calibration of the outdoor
sensor.
Defrost sensor calibration
Table 32. Problem – Build-up of ice under and around the outdoor unit
Cause
Insufficient drainage.
Table 33. Problem – Water run-off by the outdoor unit, risk of moisture problems in house foundations
Cause
Insufficient drainage.
34 – Service instructions VMGFJ102
Troubleshooting
Determine whether the heat pump can
be moved to a more suitable location.
Check that the unit is installed according
to the instructions.
Troubleshooting
Check that the outdoor sensor is installed
according to the installation instructions
and that it is correctly calibrated.
Check that the defrost sensor is installed
according to the installation instructions
and that it is correctly calibrated.
Troubleshooting
Does a lot of ice accumulate under and
around the outdoor unit because the mel-
ted water has nowhere to run?
Troubleshooting
During some periods when the outdoor
unit is being defrosted, large amounts of
water can run off.
Remedy
Move the heat pump if possible.
Rigid mountings can generate noise
from the heat pump via walls in the
house.
Remedy
Install according to the instructions and
calibrate, if necessary.
Calibrate if necessary.
Remedy
Drain the ground under and around the
outdoor section or install a drainpipe
routed to an indoor drain or gully. NOTE!
Install a heating cable in the drainpipe.
Remedy
Drain the ground under and around the
outdoor unit so that it can cope with the
extra amount of water produced
because of defrosting or install a drain-
pipe routed to an indoor drain or gully.
NOTE! Install a heating cable in the
drainpipe.