After the compressor stops, the circulator may continue to run for a few minutes.

Why this happens

Continued flow removes residual heat from the exchanger and balances the temperatures in the circuit.

Exchanger protection

It helps prevent sudden local temperature fluctuations.

It is not a fault

If the circulator stops after the specified time, this operation is usually normal.

Verification

The overrun time should comply with the manufacturer's parameters and instructions.