Low
30 on Main Combi 30 HE

Your boiler is simply performing its normal startup routine and is currently initializing its internal systems.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Power On

From this model's manual
Verified against the Main Combi 30 He installation & service manual, page 6.
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

Wait for a few minutes to see if the boiler begins normal operationIf the boiler remains on this code for more than 15 minutes, turn the power off at the fused spurWait 30 seconds and turn the power back on to perform a soft reset

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