Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Possible Cause | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|---|
N/A | Heating ignition sparks can't be heard, or are more than a second apart | — | Fit a new battery in the automatic ignitor. | DIY Safe |
Recommended partAffiliate linksView partHideHobby and Truma specify a temperature-resistant (+70°C), leakproof AA (Mignon) battery for the ignitor. We couldn't find a widely sold AA rated to +70°C - this lithium AA is the highest-rated common option (+60°C, versus about +50-55°C for standard alkaline). AA lithium (rated to +60°C)Energizer Ultimate Lithium AA Batteries (4 Pack)~£6.99 for 44.6★ (26,000+ ratings), sold by Amazon - lithium AA, rated -40°C to +60°C View on Amazon → | ||||
Frequently Asked Questions
Q: How do I fill the boiler?
Shut the cold water intake's outlet valve by setting its lever horizontal, switch the power on at the control panel, then open a tap and leave it running until the air's been pushed out and water starts flowing, then close the tap again.
Q: How do I empty the boiler?
Switch off the power at the control panel, open the kitchen and bathroom taps, then open the boiler's own outlet valve by setting its lever vertical and let it drain straight outside.