Download Technical Manual for Servicing

Air problems
If a murmur sound occurs inside the boiler it may have to be air vented.
Check by turning the pressure release valve for the radiator system on the
top of the boiler until it ”clicks”. Pure water shall be drained. Fill up with water
if necessary. Let the installer check the reason of the problem.
Reserve heat thermostat
If the control system (display) breakes (e.g. by lighthening) you can manually
set the reserve heat thermostat behind the plastic front panel to the recommended
value, see label. Do not forget to manually operate the mixing valve by pressing its
knob and turning to the desired opening.
10. Alarms and information status messages
General information
The control system continuously supervises the operation of the system.
Two types of messages can appear:
Alarms:
if an error occurs that may cause problems to maintain correct operation,
such as sensor errors, the error diode on the panel and room sensor starts to
flash. The error shows in the dispaly directly in clear text.
Status messages:
the system shows status messages in the main menu when they occur, such
as the product is power reduced, the summer limit is reached etc. Status
messages are no errors, the diode don’t start to flash.
Alarm texts
SENSOR PRIMARY FLOW
SENSOR TANK TEMP
SENSOR ROOM (room temp)
SENSOR EL UP. (electric heater up temp)
SENSOR EL LO. (electric heater low temp)
SENSOR OUT (out door temp)
All sensor error messages: check the cables to the sensor, check the
connection -both on sensor and on tank, check that outside sensor is not
reached by the sun.
COMM ERROR (communication error)
Indicates hat the communication between the boiler and the heat pump don’t
work correctly.
- check that the heat pump have tension and in operation mode
- check the connection cable between the boiler and the heat pump (230V,
for qualified people)
- check that the heat pump and the boiler are connected to the same
neutral system in the building
- try to reset the error.
22