Heating problems
Boiler or heat pump shows an error code: causes and what to do
An error code means the unit protected itself. Codes are defined by the manufacturer, so we do not guess – note the code and model and report the fault with a photo. The technician arrives prepared.
Answer in 1 working day
How to recognise it
What you see – and what it usually means
Error after a power cutone restart as the manual says is fine
The error keeps coming backdiagnostics per the manufacturer's documentation needed
Error and no heating in winterreport it – it gets top priority
Likely causes and the right service
You can safely check
- Check the pressure gauge (usually 1–2 bar for a cold system – see the manual).
- Check that radiator thermostatic heads and manifold valves are open.
- Note the error code and photograph the rating plate.
We do not give repair instructions: gas, electrical and pressurised systems are serviced by qualified specialists.
Smell gas? Do not switch anything electrical, close the gas valve if safe, open windows, leave and call 112.
Fault reporting
Report it in a minute – follow the status online
Choose the system and symptoms, add the error code and a photo. You get a number, a status page and a direct line to the technician. No heating in winter or a leak gets top priority.
- 1System
- 2Symptoms and code
- 3Photo
- 4Contact
3D
See where the problem sits
The 3D house shows the heat source, pump group, manifolds and radiators with water flows – it is easier to understand what the technician will check.
Diagnostics3D · System flushingHeating system with flows
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