Heat pump not operating or unexpected behavior (no display alarm)

What does No display alarm, general fault mean?

The heat pump is experiencing an operational issue or is not functioning as expected, but no specific alarm message or symbol is shown on the display. This typically points to external power issues or tripped safety devices within the unit.

• The main switch (SF1) is in an incorrect position or off.
• Group fuses or main fuses for the accommodation have tripped.
• The property's earth circuit breaker has tripped.
• The heat pump's miniature circuit breaker (FA1) has tripped.
• The heat pump's temperature limiter (FD1) has tripped.
• An installed load monitor is incorrectly set.

Click steps to track your progress.

1. 1

   Check the position of the main switch (SF1) on the heat pump and ensure it is set to the 'On' position.

2. 2

   Inspect your home's electrical panel for any tripped group or main fuses and reset them if found.

3. 3

   Verify that your property's earth circuit breaker has not tripped and reset it if necessary.

4. 4

   Open the heat pump's front cover and check the miniature circuit breaker (FA1) and temperature limiter (FD1); reset them if they have tripped.

5. 5

   If a load monitor is installed, confirm it is configured correctly according to its instructions.