Damaged Components — Temperature limiter, thermostat, or immersion heater damaged

What does Boiler Dry Start Damage mean?

Starting the heat pump (moving switch SF1 to " " or " ") when the boiler has not been filled with water can cause permanent damage to critical components like the temperature limiter, thermostat, or immersion heater.

• Operating the heat pump before the boiler is completely filled with water

Click steps to track your progress.

1. 1

   Ensure the boiler is fully filled with water before turning on the heat pump (setting switch SF1 to " " or " ").

2. 2

   If the unit was started dry, check the temperature limiter (FD1) and miniature circuit-breaker (FA1) and reset them if tripped (see other entries).

3. 3

   Monitor the system for proper operation after filling and resetting. If issues persist, contact a qualified technician to inspect for damage to internal components.