Heat pumps · Error codes · Trianco
P032Trianco · Activair High Temperature R290 (5/9/15/22kW)
P032 on a Trianco Activair High Temperature R290: Hot Water Tank Temp. Sensor Fault
Short answer
On a Trianco heat pump, P032 means: Hot Water Tank Temp. Sensor Fault. The manual does not say whether the heat pump stops. An engineer is needed to fix the cause.
Reviewed 23 September 2026 · 1 source
What it means
The manual says: Hot Water Tank Temp. Sensor Fault.
Part involved: temperature sensor/thermistor.
Likely causes:
- Sensor open/short circuit or disconnected.
Is it safe?
| Does the heat pump stop? | Not stated |
|---|---|
| Engineer needed? | Yes |
The manual does not say whether the heat pump stops.
What you can check
- Note the exact code shown on the controller (a photo helps) and report it to your installer or the manufacturer's service line.
- Check the heat pump's supply breaker/isolator at the consumer unit is on (do not open any casing).
What the engineer will check
- Check the connection.
- Measure the resistance of sensor.
- if lower than 100 ohm or higher than 500 kohm, replace it.
Who to ask for: heat pump controls / electrical.
Certification: Competent heat pump engineer; electrical competence for work inside the unit.
What you might notice
Sources
- Trianco Activair High Temperature Air Source Heat Pump (R290 5/9/15/22kW) - Installation Operation and Service Manual ↗ · November 2024 (PDF regenerated 2026-08) · page 37 · Reviewed 23 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 23 September 2026