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Feb 1, 2023
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Kettering
Member Type
DIY or Homeowner
My partner has an Alpha CD25C fitted and worked until a couple of weeks ago. Intermittently it will switch off after working for 4-5 days.
When checking the boiler lights A + B flashing red alternately and light D is green. Tried doing a reset and switching off the main power and restarting.
Also it doesnt seem to want to work when doing and override on the programming.
Any clues,

Many Thanks

Mick
 
States in the manual a pressure issue, if the pressure is fine, then it could be the pressure switch or the pcb - an engineer would be needed to confirm this.
 
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