Winter preparations

Turn your radiator thermostat temperature settings all the way up. The entire radiator should warm up. If it does, you’re good to go. But if the radiator only partially warms up or worse, not at all, you need to take further action.

If your radiator isn’t working properly, turn down the heat and carefully loosen the bleed screw – at the top of the radiator – either by hand or with a pair of pipe wrench pliers. Have a cloth ready for potential leaks. You should hear hissing sound, indicating air being forced out by water. When the water begins to squirt out, retighten the screw. (Note: If no water comes out you may have to refill the expansion tank.)

You’ve tried Step 2 with no success; your radiator valve might be blocked. Remove the thermostat with an Allen key or by turning counterclockwise (on newer models). Gently push in on the exposed radiator valve pin with the flat end of the Allen key. The pin should move in 2-3mm and bounce out again.

If the radiator thermostat valve pin is stuck, gently alternate between tapping the valve’s side and moving the pin in and out until it frees. Check for leaks and reattach the thermostat.

If you’ve performed Steps 1-3 and your radiator still isn’t working properly, please contact your local heating technician. Their expert advice can help troubleshoot your challenges and have you feeling warm all over in no time.

It’s essential that the brine circuit is always filled with the correct fluid levels otherwise the heating installation may become damaged. The fluid level may also vary depending on the temperature of the heat source. Under no circumstances must the fluid level be allowed to drop so far that it is no longer visible in the expansion tank. If the brine level is too low please contact your installer.

The brine circuit’s strainer must be cleaned twice a year. To clean it: Switch off the heat pump; Remove the insulation around the filler cock; Turn the shut-off tap (A) to the closed position; Unscrew the cover (B) and remove it; Remove and rinse the filter (C); Reinstall the filter; Check that the O-ring (D) on the cover is not damaged; Screw the cover back into place; Turn the shut-off tap to the open position; Reinstall the insulation around the filler cock; Start the heat pump.

Check the line pressure of the heating installation once a month. The external manometer must have the correct pressure. The pressure of the heating installation might differ from country to country but the most common setting is between 1 and 1.5 bar. If the value display is below 0.8, the water must be topped up. If the heating system pressure is too low or you are not aware of your heating system pressure settings please contact your local installer.

The strainer must be cleaned twice a year. Have a cloth ready when opening the strainer cover as a small amount of water usually escapes. To clean the strainer: Switch off the heat pump; Turn the shut-off tap (A) to the closed position; Unscrew the cover (B) and remove it; Remove and rinse the filter (C); Reinstall the filter; Check that the O-ring (D) on the cover is not damaged; Screw the cover back into place; Turn the shut-off tap to the open position; Start the heat pump.

In the OPERATION menu you can set the operating mode of the heat pump. Please make sure that before the heating season arrives your heat pump is in AUTO or HEAT PUMP mode.

When changing operating mode, confirm your choice by pressing the right button once. The asterisk will move to the selected operating mode.