NO TEMPERATURE RISE
33.9321° S, 18.8602° EHeat Pump Not Heating in Wellington
The unit appears to run but water temperature never reaches the set-point, or takes far longer than it used to.
Diagnostic Breakdown
Symptoms, causes and what we do
Symptoms
What you are seeing
- Lukewarm water at the taps
- Very long recovery after a shower
- Set-point never reached on the controller
Likely Causes
What usually causes it
- Refrigerant undercharge from a slow leak
- Failed or drifting water temperature sensor
- Dirty evaporator coil restricting airflow
- Circulation pump not moving water through the unit
- Compressor running but not pumping effectively
- Set-point or timer programmed lower than expected
Reyds Solution
What we check and repair
- Confirm actual water and ambient temperatures against controller readings
- Check flow through the unit and pump operation
- Take suction and discharge pressures to establish charge and compressor health
- Clean the coil and verify airflow before any refrigerant work
- Repair the leak, recharge to specification and re-test temperature rise
Local Context
Why this happens in Wellington
Farms, guest accommodation and residential homes. Hot dry summers and genuinely cold winter mornings inland — the widest ambient range we service.
We see heat pump not heating across domestic geyser retrofits, integrated hot water systems, pool plant and commercial installations. The diagnosis is the same discipline every time: prove the fault with readings before replacing anything.
Urgent
What to do right now
- 01Isolate the unit at the isolator rather than repeatedly resetting the breaker.
- 02Check the airflow path around the unit is clear and look for water beneath it.
- 03Note the brand, approximate age and when the problem started.
- 04Call 069 268 0988 so we can triage before attending.
Services
Heat pump services in Wellington
Heat Pump Repairs WellingtonFAULT FINDING / COMPONENT REPAIRHeat Pump Installation WellingtonSIZING / PLUMBING / ELECTRICALHeat Pump Servicing WellingtonANNUAL SERVICE / PERFORMANCE CHECKHeat Pump Maintenance WellingtonPLANNED MAINTENANCE CONTRACTSEmergency Heat Pump Repairs WellingtonNO HOT WATER / PRIORITY ATTENDANCEHot Water Heat Pumps WellingtonDOMESTIC HOT WATER / 55°C SET-POINT
Other Faults
Other faults we diagnose in Wellington
Heat Pump Losing Heat WellingtonHEAT LOSS / STANDING LOSSESHeat Pump Low Pressure Fault WellingtonLP LOCKOUTHeat Pump Refrigerant Leak WellingtonCIRCUIT LEAK / RECHARGEHeat Pump Compressor Fault WellingtonCOMPRESSOR / WINDINGSHeat Pump Fan Not Working WellingtonFAN MOTOR / CAPACITORHeat Pump Thermostat Fault WellingtonSET-POINT / SENSOR DRIFT
Nearby Areas
Heat Pump Not Heating near Wellington
FAQ
Heat Pump Not Heating — questions we are asked
Heat Pump Not Heating? Call 069 268 0988.
Tell us the brand, the error code and what changed. Diagnostic-led repairs on domestic, pool and commercial heat pump systems — from electrical faults and controller failures to refrigerant circuit and compressor problems.