Bentone Sterling 40 ST.108PL Oil Burner

[Dubs17]

If the oil nozzle is wet, then this suggests that solenoid is opening during ignition phase. The one thing you have ignored is what oil pressure are you getting at the pump? This could be your problem given what you have changed.

Hi,
Thanks for response
Could you tell me what voltage I should be getting at the coil when burner is been called for as I seem to be only getting 70 volts
Thanks

 

[Terrywookfit]

Mains voltage.

 

[Dubs17]

Thanks

 

[Dubs17]

If the oil nozzle is wet, then this suggests that solenoid is opening during ignition phase. The one thing you have ignored is what oil pressure are you getting at the pump? This could be your problem given what you have changed.

Hi,
Thanks for response
Could you tell me what voltage I should be getting at the coil when burner is been called for as I seem to be only getting 70 volts
Thanks

Hi,
I noticed this evening that boiler was on for 4 hours and then cut out again, left it off for 40 minutes and tried it again and it fired up no bother !!!

 

[oilboffin]

I give up OIL PRESSURE.Bob

 

[Dubs17]

I give up OIL PRESSURE.Bob

Going to get oil pressure checked on Wednesday, I'll keep you informed
Thanks for your time

 

[Terrywookfit]

Invest in a new coil as well.

 

[oilhead]

So now you tell us that it runs for a period, then locks out, but will restart after a rest period. Classic faulty coil symptoms.

 

[Dubs17]

Invest in a new coil as well.

Hi Terry,
Coil seems fine measuring 2 k across parallel spades and cable is not broken, puzzled why I'm getting 70 volts at coil when burner is been called for and on a couple of occasions I was getting 220 volts even though I installed a new control box in which the connections from the coil go back to
Thanks

 

[Dubs17]

Invest in a new coil as well.

So now you tell us that it runs for a period, then locks out, but will restart after a rest period. Classic faulty coil symptoms.

I always said it runs for a period and then drops out after two hours, if it is the coil why am I getting 2K at spade connections on coil and cable is fine, I'm very puzzled about this.
Thanks for your time and input

 

[Terrywookfit]

Coil faults are intermittent due to an internal breakdown.
I have had them go o/c.....BUT BY THE TIME IT TOOK TO UNPLUG AND TEST they measured ok.

From your first post. I said it was a classic faulty coil symptoms. But you chose to change every thing but!!
The coil should have been first to eliminate.
quote..
Getting back to you with update:
1: I've changed the control box with brand new box
2: I've changed electrodes with brand new electrodes
3: I've changed photocell with brand new cell
4: I've changed oil nozzle with brand new nozzle

 

[Dubs17]

Coil faults are intermittent due to an internal breakdown.
I have had them go o/c.....BUT BY THE TIME IT TOOK TO UNPLUG AND TEST they measured ok.

From your first post. I said it was a classic faulty coil symptoms. But you chose to change every thing but!!
The coil should have been first to eliminate.
quote..
Getting back to you with update:
1: I've changed the control box with brand new box
2: I've changed electrodes with brand new electrodes
3: I've changed photocell with brand new cell
4: I've changed oil nozzle with brand new nozzle

Hi,
I know you did and appreciate your advice. I'll go and get a coil tomorrow.
Thanks again

 

[Dubs17]

Coil faults are intermittent due to an internal breakdown.
I have had them go o/c.....BUT BY THE TIME IT TOOK TO UNPLUG AND TEST they measured ok.

From your first post. I said it was a classic faulty coil symptoms. But you chose to change every thing but!!
The coil should have been first to eliminate.
quote..
Getting back to you with update:
1: I've changed the control box with brand new box
2: I've changed electrodes with brand new electrodes
3: I've changed photocell with brand new cell
4: I've changed oil nozzle with brand new nozzle

Hi,
I know you did and appreciate your advice. I'll go and get a coil tomorrow.
Thanks again

Just one more thing before I purchase the coil, why am I not getting 220volts on the spades that connect to the coil when the burner is called for
Thanks

 

[Dubs17]

Coil faults are intermittent due to an internal breakdown.
I have had them go o/c.....BUT BY THE TIME IT TOOK TO UNPLUG AND TEST they measured ok.

From your first post. I said it was a classic faulty coil symptoms. But you chose to change every thing but!!
The coil should have been first to eliminate.
quote..
Getting back to you with update:
1: I've changed the control box with brand new box
2: I've changed electrodes with brand new electrodes
3: I've changed photocell with brand new cell
4: I've changed oil nozzle with brand new nozzle

Hi Terry,
Just letting you know that I bought a coil for the burner and installed it over the weekend and it seems to be working fine now (fingers crossed) i would like to thank yourself and everyone for there input into resolving this issue.
Thanks again.