Circulation Pump (GP1) Stopped — Heating medium not circulating

What does Circulation Pump (GP1) Stopped mean?

The circulation pump, responsible for moving heating medium, is not operating. This can prevent the system from effectively heating.

• Pump motor is stuck or not starting automatically.

Click steps to track your progress.

1. 1

   Shut off the NIBE F1245 by setting the switch (SF1) to the 'off' position.

2. 2

   Open the service cover and remove the cover for the cooling module.

3. 3

   Locate the venting screw (QM5) and loosen it with a screwdriver. Hold a cloth to catch any small amount of water.

4. 4

   Insert a screwdriver into the pump motor and manually turn it around to help it start.

5. 5

   Screw the venting screw (QM5) back in securely.

6. 6

   Start the F1245 by setting switch (SF1) to 'on' and check if the circulation pump is now working. Be prepared for the screwdriver to jerk if you try to start it with the unit running.