What the manual says
Manufacturer manualPreheating function starts (DHW preheating circuit)
From this model's manual
Verified against the Baxi Combi 80e installation & service manual.
DIY fix possible
No action is required as this is a normal operational light.Wait a few minutes for the preheating cycle to finish.If you wish to stop this occurring, check your user manual to disable the 'Pre-heat' or 'Comfort' setting.
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