Hi all , I'm hoping that someone could shed some light on a frustrating problem I have with the oil pump on a Worcester bosch heatslave 12/14 , it seems there some reason that on initial fire up from lockout, the start up sequence dose not operate in the correct order ?,
If I'm right believing that the sequence should be
Fan motor
Spark
Ignition
Photo cell
Selanoid
But my sequence is
fan motor
Fire up
Lockout
No click from selanoid
I've checked everything and replaced nozzle , bled the air from the pump with gauge and set pressure at 100 psi , stripped the pump completely, fitted new seal kit to the pump the only way I can get the burner to fire up and keep running is
Turn oil pressure way down to 20 psi until the selanoid clicks then wack the pressure back up a good half of turn and the burner runs sweet
If anybody has any suggestions I'd love some advice please, I'm at a loss with it now
If I'm right believing that the sequence should be
Fan motor
Spark
Ignition
Photo cell
Selanoid
But my sequence is
fan motor
Fire up
Lockout
No click from selanoid
I've checked everything and replaced nozzle , bled the air from the pump with gauge and set pressure at 100 psi , stripped the pump completely, fitted new seal kit to the pump the only way I can get the burner to fire up and keep running is
Turn oil pressure way down to 20 psi until the selanoid clicks then wack the pressure back up a good half of turn and the burner runs sweet
If anybody has any suggestions I'd love some advice please, I'm at a loss with it now