Troubleshooting; Alarm - Danfoss DHP-H User Manual

8

Troubleshooting

8 .1

alarm

In the event of an error message try restarting the installation using the installation's safety
switch.
If restarting the heat pump does not help try rectifying the problem using the table below.
Contact your installer (see "References") if you are unable to rectify the problem yourself.
Message Meaning
LOWPRESS LOWPRESS ERROR - The com-
ERROR pressor stops and there is no
hot water production.
HIGHPRESS HIGHPRESS ERROR - The com-
ERROR pressor stops and there is no
hot water production.
MOTOR P Motor protection cut out. The
ERROR compressor stops and there is
no hot water production.
ALARM Overheating protection
AUXILIARY deployed.
HEATER
SENSOR Fault in outside sensor. To cal-
OUTDOOR culate the supply temperature's
desired value, use 0°C instead.
SENSOR Incorrect supply sensor.
FRONT Everything stops except the
circulation pump for the heat-
ing system.
SENSOR Return sensor fault.
RETURN
Danfoss – 0
Cause
Not enough fluid
in the brine sys-
tem. Air in the
brine system.
Blocked filter in
the brine system.
Insufficiently
opened radiator/
floor loop thermo-
stats.
Air in the heating
system. Blocked
strainer in the
heating system.
Power failure
caused by a
blown fuse or the
safety switch has
deployed.
Electrical fault. The
safety switch has
tripped.
Electrical fault.
Electrical fault.
Electrical fault.
VUBMA102
Remedy
Contact your
installer.
Open radiator /
floor loop thermo-
stats. Top up and
bleed the heating
system or contact
your installer.
Check the fuses
and reset the
safety switch.
Contact your
installer.
Contact your
installer.
Contact your
installer.
Contact your
installer.