Table of Contents
Advertisement
What to do if a fault occurs
All alarms
An alarm can sometimes occur temporarily due to various reasons.
However, there is never a risk involved in resetting an alarm. All the alarms
that can appear in the menu display are described on the following pages.
The descriptions give you an idea about the nature of the alarm and what
you can do to rectify it.
List of all alarms:
High return to the heat pump
Low pressure switch
High pressure switch
Sensor fault
Motor protection fan
Defrosting alarm
High return to the heat pump T9 (GT9)
There is a sensor T9 (GT9) in the heat pump, which for reasons of
safety, stops the compressor if the temperature of the return water from
the radiators becomes too high. The limit lies at approximately 48ºC.
Possible cause 1: The heat setting is set so high that the
heating system's return temperature is too
high.
Action:
1.
Reduce the temperature setting.
Possible cause 2: The hot water temperature is set too high.
Action:
1.
An alarm is given in hot water mode.Contact the
installer to adjust the hot water temperature.
Possible cause 3: The fl oor heating or radiator valves are
closed.
Action:
1.
Open the valves.
Possible cause 4: The fl ow across the heat pump is greater
than the fl ow in the heating system.
Action:
1.
Reduce the speed of the heat carrier pump or
increase the speed of the main pump in the
heating system. Contact your dealer for help.
Power failure
Compressor temperature
External electric cassette
Phase sequence error
Heat transfer fluid out max
32
The menu display shows:
ALARM
(GT9)
High return HP
031020 16:08:15
Info
Ackn.
Note
The heat pump starts automatically
when the temperature drops. The
alarm does not need to be acknowl-
edged, yet if you wish to access the
menus you can clear the alarm window
by acknowledging.
Note
Lower the speed of the heat carrier
pump:
Use a screwdriver or a coin to lower the
speed of the heat carrier pump. Turn one
step clockwise. The lowest speed should
be avoided.
Hide quick links:
Advertisement
Table of Contents
