Operational Problem - Outdoor Unit - Danfoss DHP-AL Installation And Service Instructions Manual

14.9 Operational problem – Outdoor unit
Problem – Noise/loud noise
Cause
1. Positioning the outdoor unit.
2. Connection/wall lead-ins.
Problem – Defrosting problems
Cause
1. Location/calibration of the outdoor sensor. Check that the outdoor sensor is installed
2. Brine temperature in/out.
Problem – Build-up of ice under and around the outdoor unit
Cause
Insufficient drainage.
Problem – Water run-off by the outdoor unit, risk of moisture problems in house foundations
Cause
Insufficient drainage.
60
Troubleshooting
Determine whether the outdoor unit can be
moved to a more suitable location.
Check that the unit is installed according to
the instructions.
Is the outdoor unit secured to the wall?
Troubleshooting
according to the installation instructions
and that it is correctly calibrated.
Measurement check the temperatures with
a thermometer.
Troubleshooting
Does a lot of ice accumulate under and
around the outdoor unit because the melt-
ed water has no where to run?
Troubleshooting
During some periods when the outdoor
unit is being defrosted, large amounts
(20-40 L/day) of water can run off.
VMBME102
Remedy
When positioning the outdoor unit, its
direction does not affect its performance.
The outdoor unit does not need to be posi-
tioned as close to the heat pump as neces-
sary, it can be positioned as far as 30 "pipe
metres" way.
Rigid mountings can generate noise from
the outdoor section via walls in the house.
Remedy
Install according to the instructions and
calibrate, if necessary. Alternatively, the
outdoor sensor can be located behind the
outdoor unit 20 cm out from the rear side of
the outdoor unit.
If necessary, calibrate BRINE IN and BRINE
OUT in the heat pump's control computer.
Remedy
Drain the ground under and around the
outdoor section
or
Install a drip tray with a drainpipe routed
to an indoor drain or gully. NOTE! A heat-
ing cable may have to be installed 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 drip tray with a drainpipe routed
to an indoor drain or gully. NOTE! A heat-
ing cable may have to be installed in the
drainpipe.