Heat Geek-certified diagnostics

Heat pump fault diagnosis

If your heat pump is running but the house is not warm, hot water is unreliable or electricity use has climbed, PCR will investigate the system as a whole rather than simply resetting the fault code.

Heat pump problems we investigate

  • Rooms not reaching the expected temperature
  • No hot water or a cylinder that reheats slowly
  • Frequent cycling, warning codes or unexplained shutdowns
  • Unusual fan, pump or refrigerant-circuit noises
  • A sudden increase in electricity use
  • Poor performance following installation or system changes

A structured diagnostic visit

  • Review controls, weather compensation and operating history
  • Check flow temperatures, flow rates and system pressure
  • Inspect filters, pumps, valves and heat emitters
  • Test electrical and refrigerant-side components where appropriate
  • Explain the findings before recommending repair or adjustment

Clear advice before repair work begins

PCR is independent of the original installer and supports homeowners with existing air-source heat pump systems from major manufacturers.

Learn about heat pump service and repair

Frequently asked questions

Why is my heat pump running but not heating the house?

Possible causes include control settings, restricted flow, low system pressure, undersized emitters or a component fault. A diagnostic visit measures system performance rather than relying on one symptom.

Can PCR diagnose a heat pump installed by another company?

Yes. PCR can inspect and diagnose existing air-source heat pump systems even when another company completed the installation.

Should I reset a heat pump fault code?

One reset may restore operation, but repeated faults should be investigated. Record the code and avoid repeatedly resetting a system that continues to stop.

Tell PCR what is happening

Describe the symptoms through PCR's secure booking form. Ann or Pete will review the request and confirm the next appropriate appointment.

Request a visit