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What to do if a fault occurs
Control panel
All settings are made from the control panel. It also displays heat
production statistics and information about different alarms. When you
have made your settings, the control panel makes sure they are saved in
the control unit to carry out your wishes.
Controls and status indicators
High pressure switch (HP)
Possible cause 1: Air in the primary circuit.
Action:
1. Press the Ackn. button.
2. Check whether there is air in the
radiators/underfloor circuit.
3. Fill the heating system and vent if necessary.
Possible cause 2: Not enough primary flow over the heat pump.
Action:
1. Press the Ackn. button.
2. Check that the heat carrier primary pump has not
stopped.
3. Check that all the valves are open. Radiator
thermostat valves should be fully open and
underfloor heating systems should have at least half
of the coils fully open.
4. Possibly increase the speed of the primary
circulating pump.
Possible cause 3: The filter on the primary circuit is blocked.
Action:
1. Press the Ackn. button.
2. Check the filter.
3. Clean the filter if necessary.
Electric heater (EK)
(Shown as Electrical cassette in the menu display)
Possible cause 1: The electric heater miniature circuit-breaker
has tripped.
Action:
1. Press the Ackn. button.
2. Reset the miniature circuit breaker button on the
heat pump (circuit breaker 3) by pushing up the
toggle switch.
3. Contact the Technical Department if the
miniature circuit breaker trips again.
Possible cause 2: The electric heaters overheat protection has
tripped.
Action:
1. Press the Ackn. button.
2. Reset the overheat protector (circuit breaker 4)
by pressing in the button on the electric heaters
protective casing. The circuit breaker is reset when
you hear a clicking sound.
3. Check that the filter on the primary circuit is
clean.
Power switch (ON/OFF)
Indicator on: Mains power ON.
Indicator flashes: Mains power OFF.
Operating status
Indicator on: The heat pump (compressor) is
operational.
Electric heater status
Indicator on: The heat pump is using additional
heat from the electric heater.
Hot water status
Indicator on: The heat pump is heating DHW in
the cylinder.
Indicator flashes: The heat pump has a hot water
peak or is producing extra DHW.
Alarm status
Indicator flashes: A fault has occurred in the heat
pump.
Indicator on: The alarm has been acknowledged
by the end user, but the fault remains. (See
section; What to do if a fault occurs).
Heat.
Pressing once gives a shortcut to the most
frequently used temperature settings.
Info
Pressing once gives continuous information
about the heat pump and electric heater
operating conditions.
Menu
Press once to enter the main menu. The main
menu contains all the setting menus and
temperature displays.
Increase the speed of the
primary pump:
Use a screwdriver or a coin to increase
the speed of the primary pump. Turn
one step anti-clockwise.
The miniature circuit-breaker button
for the electric heater can be found
under the heading Fuses and reset
but-tons on the heat pump.
The most frequent cause for the
overheat protection tripping is a poor
flow through the primary circulating
pump, which can be due to air in the
primary pump or a blocked filter.
Control panel
Note
Note
TECHNICAL INFORMA
TION
FOR THE USER
FOR THE INST
ALLER
TECHNICAL INFORMA
TION
FOR THE USER
FOR THE INST
ALLER
Menu
dial
Status lamps
Power
switch
(ON/OFF)
Menu
buttons
Menu
display
Reg 637 K1
040622 16:08:15 Tu
Heat Info Menu
Rego 637 K1
040622 16:08:15 Ma
Heat. Info Menu
Heat
Info
Menu
Alarm
(HP)
High press. switch
040622 16:08:15
Info
Ackn.
Alarm
(EK)
Electrical cassette
(EE) 040622 16:08:15
Info
Ackn.