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hi, currently working on a hydroline b24 combi, boiler will fire on heating and hot water but only for around 10 seconds then goes straight to lockout . have replaced flame rectification probe and lead but still the same . fan pressure switch ok pump runs now thinking p.c.b problem. boiler is made by heatline

Submitted: 20 days and 22 hours ago.
Category: HVAC
Value: $17
Status: AWAITING EXPERT REPLY
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Optional Information

Make : hydro line b24
Model : b24

Already Tried:
changed flame rectification probe and lead

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