alpha Intec2 E43 problem

[BigBobby]

Hi Called out to a Alpha Intec 2 with e43 code, reset boiler it fine for a few days then comes back .It had a new gas valve fitted a year ago by Alpha out of warranty now Can anyone help with this
thanks BigBobby

 

[cjg]

possable flue temp to high, faulty ntc on flue.

 

[BigBobby]

possable flue temp to high, faulty ntc on flue.

Thanks for the feedback you say possable flue temp to high will do a check on the gas valve to make sure it with in the spec
thanks Bigbobby