Search results

For those of you that are interested, a new control box fixed the problem. Thanks for all the contributions, Peter

Just probed the control box from underneath and there is 51V between the white motor wire and neutral. From the comments made earlier I assume therefore that the motor is OK. I also probed across the solenoid coil. There are no volts across it, therefore no chance of fuel being pump to the...

The coil has resistance so I think this is OK. Why do I need a pressure gauge? Won't the oil just spurt out of the outlet - can't see why not. As a diesel fuel injection engineer its how I would do it.

OK Boilerman2 will try, but the motor I'm sure is OK as it runs with the same "noise" as when the system was working properly. By the way, measured the resistance of the photocell, it's about 250 ohms with a light on it, and just about infinity when covered up. Am I right in thinking that the...

Unplugged the photocell and it changes nothing. The motor still runs on and on. This means the photocell is in fact OK? I wish I could get hold of a proper service manual, any ideas? Thanks, Peter

Thanks Terry. Just phoned my son and asked him to bring a precision multimeter home from work and then I'll be able to do a light/dark resistance check on the photocell. If the cell is faulty, would the motor just run and run and would the solenoid be prevented from actuating? If so I think you...

The burner is a Riello 40 G5Q type 443T55, about 15 years old. It suddenly stopped lighting. There is oil entering the fuel pump but when the pump turns no oil exits. After bleeding the pump, still no oil exits. So I removed the pump, checked the flexible coupling which is fine, so am certain...