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Fault code A6/A7?

I have a Potterton Gold boiler and it's flashing up error code A6 and then A7 I have read the manual a million times and all the error codes start with E and it doesn't say anything about fault code A6/A7 any ideas what this could mean? Thanks

Toni, June 2014

home Fix label Heating label_important Home Heating Systems category Pottertondone

A7 on a Baxi boiler usually means the hot water thermostat may have faulty sensor or faulty leads.

R Lever, March 2022

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home Fix label Heating label_important Home Heating Systems category Potterton

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