Low
5 green flashes on Baxi Netaheat

Your boiler has experienced a brief electronic 'hiccup' or data error and is trying to correct itself automatically.

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

Parameter error on printed circuit board (PCB). Temporary error, will self reset

From this model's manual
This code was read directly from the manufacturer service manual for this model.
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 up to 10 minutes for the boiler to automatically reset itself.If the flashing continues, turn the power switch to the boiler off and then back on again.Ensure there are no external electrical appliances causing interference near the boiler.

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Avoid the next call-out bill

A cover plan would handle faults like 5 green flashes: no call-out fees, no surprise bills.

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