Warning Heat Pump Z1 limited by low heating medium flow (check filter)

What does 5252 mean?

Your Heat Pump for zone 1 is operating with reduced performance due to insufficient heat transfer fluid flow. This can happen if the temperature difference (delta) is too high in heating or cooling mode.

• Low system pressure or air trapped in the heating system.
• Clogged system filter or filter ball (SC1).
• Poor circulation in the heat transfer system or heating system.

Click steps to track your progress.

1. 1

   Check the system filter and clean it if it appears dirty or blocked, as indicated by the warning.

2. 2

   Verify the system pressure. If it's low, vent the heating system as per your manual and top up with water.

3. 3

   Ensure all adjuster valves and radiator thermostats are open to allow for proper fluid circulation.