Heat pumps · Error codes · Trianco
07Trianco · Activair (first generation) S300/S500/S800/S1200/S1300/S1800
07 on a Trianco Activair S300/S500/S800/S1200/S1300/S1800: Programmer cutout activated
Short answer
On a Trianco heat pump, 07 means: Programmer cutout activated. The heat pump stops until the fault clears or is reset. An engineer is needed to fix the cause.
Reviewed 23 September 2026 · 1 source
What it means
The manual says: Programmer cutout activated.
Part involved: controller/PCB communication.
Likely causes:
- Short circuit.
- Faulty programmer.
Is it safe?
| Does the heat pump stop? | Yes |
|---|---|
| Engineer needed? | Yes |
The heat pump stops until the fault clears or is reset.
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).
- Check the controller display is lit and showing the code.
What the engineer will check
- Check wiring and settings.
- Repair or replace as necessary.
Who to ask for: heat pump controls / electrical.
Certification: Electrical competence (Part P / qualified electrician) for work inside control panels.
What you might notice
Sources
- Trianco Activair Air-to-Water Air Source Heat Pump S300 & S500 - User, Installation, Commissioning & Servicing Instructions (224511) ↗ · 224511 · page 21 · Reviewed 23 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 23 September 2026