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E133?
hi i have a potterton promax system HE plus showing E133 i have reset ect but the pressure has gone how do i fix it
trish
August 2022
Potterton
Heating, Home Heating Systems
Potterton Promax System
Lots of possible issues, most of which need a Gas Safe certified engineer.
You could check the condensate drain is running freely.
https://community.screwfix.com/threads/boiler-shows-repeated-error.193800/
tjhtfgjh
August 2022
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