23
All alarms
Below is a description of the alarms that can appear in the menu display. The description gives an
idea of what the fault is and what you yourself can check and remedy. An alarm can sometimes
occur temporarily so there is never any risk with resetting it. If a fault persists, you should contact the
installer.
The description sometimes refers to a heat pump component. Pages 28 and 29 have details of where
to find the components. Page 28 is for models 14-16 and page 29 is for models 20-40.
COMPRESSOR MOTOR CUTOUT SWITCH ALARM
To reset the alarm: Reset the motor cutout by pressing in the
black button (position 2). Then press “Ackn.” Note: The lamp
goes out even if the motor cutout has not been reset. (Models
25-40 have built-in temperature protection in the compressor
that resets automatically when the temperature has reduced).
ALARM (MB1)
Compr. circ. Switch
020301 15:10:18
Info Ackn.
Probable causes and actions:
• Sporadic fault or overloading of the power supply.
Action: Reset the motor cutout and wait and see.
• The current setting on the motor cutout is too low. The compressor’s current intensity varies during
summer/winter operation.
Action: Contact the installer.
• Contactor or cutout faulty, or loose electrical connections to the compressor.
Action: Contact the installer.
• Compressor faulty.
Action: Contact the installer.
ALARM (MB2)
HTF c-pump switch
020301 15:10:18
Info Ackn.
HEAT TRANSFER FLUID CIRCULATION PUMP
SWITCH ALARM
To reset the alarm: Greenline 14-16. Press “Ackn.” (Mod-
els 14-16 have built-in motor cutout in the pump that resets
automatically after a period of time). Greenline 20-40. Reset
the circuit breakers (pos 3) or the pump built-in motor cutout
(pos 9) and press Confirm. Note that the lamp goes out even if
the motor cutout has not been reset.
Probable causes and actions:
• The pump has stopped because of contaminants.
Action: If the pump has an air vent screw it can be loosened and the pump restarted with a screw-
driver
• Fault in the pump’s electric motor.
Action: Contact the installer.
• Temporary fault.
Action: If the fault persists, contact the installer.
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