What the manual says
Manufacturer manualPower On
From this model's manual
Verified against the Main/Main Combi 30 He installation & service manual, page 6.
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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Related fault codes
All 12 fault codes on the Combi 30 HE
Seeing a different code? Every code this model can display, in one place.