If your Main boiler is showing E130, the current manufacturer error-code reference describes it as the flue thermostat sensor having tripped, causing a lockout on the covered models.
The code appears in the appliance group that includes Main Eco Compact Combi and System boilers. Main has produced different boiler ranges, so confirm the exact model before applying any online explanation.
What does Main E130 mean?
The boiler has stopped because its flue-temperature protection has operated. A lockout is a deliberate safety response: the appliance will not continue normal operation until the condition has been checked and the lockout is cleared correctly.
E130 tells the engineer which protective circuit has operated, but it does not establish the cause from the display alone. The reason may involve temperature, circulation, the sensor circuit or another appliance condition. Those possibilities must be tested against the instructions for the exact model.
Which Main boilers use E130?
Baxi’s current error-code table includes E130 in the group covering Main Eco Compact Combi and Main Eco Compact System appliances, alongside several related Baxi Group models. An older or different Main boiler may use another control system.
Record the full model name and every symbol shown with E130. If the display changes, a photograph or short video can help preserve the sequence for the engineer.
What should you do first?
- Keep the casing closed. The flue thermostat and associated components are not homeowner-serviceable.
- Note what happened before the lockout. Mention unusual noises, recent pressure changes or whether the code appeared during heating or hot-water use.
- Check system pressure externally. Compare the gauge with the normal range in the model’s user guide.
- Look at the outside flue terminal only from a safe position. Do not climb, dismantle it or insert anything. Report obvious damage or obstruction.
- Use no more than the reset allowed by the exact user guide. If E130 remains or returns, stop resetting and book a repair.
Can low pressure cause E130?
The manufacturer defines E130 as a flue thermostat sensor trip, not as the normal low-pressure code. However, an engineer may consider the wider operating conditions when testing why the appliance overheated or locked out.
Only top up if the pressure is genuinely below the manufacturer’s stated range and you know the approved external filling procedure. Repeatedly adding water is not a fix for E130.
Can you continue using the boiler?
Do not repeatedly force a locked-out boiler to restart. A single user reset may be appropriate if the manual allows it, but a code that returns needs professional attention. The boiler has stopped for a reason and the protective circuit must not be bypassed.
If you smell gas, suspect carbon monoxide, see scorching, notice damage around the flue or hear a carbon-monoxide alarm, stop normal troubleshooting and follow Gas Safe Register emergency guidance.
What will the engineer check?
The engineer will confirm the model-specific code, review the fault history and test the appliance in accordance with the manufacturer’s instructions. That may include checking the flue-temperature protection, circulation and related controls, without assuming the sensor itself is automatically the failed part.
Sharing the exact code, model and circumstances helps the engineer focus the visit efficiently.
Get your Main boiler fixed
Book a fixed-price boiler repair so the E130 lockout can be checked safely and the fault put right.
Quick answer
On covered Main Eco Compact boilers, E130 means the flue thermostat sensor has tripped and the appliance has locked out. Keep the casing closed, record the full display and model, and arrange a repair if one permitted reset does not clear it.