bentone inter b9-b worcester 15/19

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3 Sep 2016
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Hi Can some one help with my boiler a bentone inter b9-b worcester 15/19 run fine for 3 mins then the relay clicks flame goes out and then lockout I have change the Flame detector no change
 
The initial suspect is the solenoid coil on top of the oil pump.....they tend to fail when they get hot.
Usually with a photocell fault, the burner lights up but then goes out within 10 sec.
John :)
 
+1, Solenoid coil.
Get your multimeter ready, start up the burner and as soon as it goes to lock out, remove solenoid lead and check for continuity. If open circuit, you have found the problem.
 
Thank you guys you where spot on Solenoid coil replaced all working fine now cheers
 
Wow, how did you get one so quickly?
Curiously, a coil can cost around £25 or so, depending on where you go and a full pump, with coil, around £65.
Pleased its sorted anyway!
John :)
 

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