Medium
H.03.02 on Baxi 436 COMBI 2.1

Your boiler's burner has unexpectedly gone out while running, causing the system to restart or stop to ensure safety.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

What the manual says

Manufacturer manual

Temporary flame loss

From this model's manual
Verified against the Baxi/Baxi 400 Combi 2 Baxi400 Comni 2 1 Installation Manual Pdf installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Check that your gas pre-pay meter has credit (if applicable)Check that other gas appliances in your home are working correctlyPress the Reset button for five secondsEnsure the external condensate pipe is not frozen if it is currently cold weather

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Related fault codes

E.133View →E.128View →H.03.05View →

All 65 fault codes on the 436 COMBI 2.1

Seeing a different code? Every code this model can display, in one place.

254A.00.28A.00.29A.00.34A.02.06A.02.18A.02.36A.02.37A.02.45A.02.46A.02.48A.02.49A.02.54A.02.55A.02.76E.00.04E.00.05E.00.16E.00.17E.00.20E.00.21E.01.04E.01.12E.01.17E.01.20E.02.13E.02.17E.02.35E.02.39E.02.47E.04 | .54E.04.01E.04.02E.04.03E.04.08E.04.10E.04.12E.04.13E.04.17E.04.18E.04.23E.04.29E.04.54E.04.254H.00.42H.00.81H.01.00H.01.05H.01.08H.01.14H.01.18H.01.21H.02.00H.02.02H.02.03H.02.04H.02.05H.02.07H.02.09H.02.10H.02.70H.03.00H.03.05H.03.54

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