Hello First post,
As in the title. Switched the heating on last week and it seemed a bit erratic, not quite reaching temperature. It wouldn't come on at all yesterday.
Checked all the stats and the three way valve which all appear ok. The pilot is on but the main burner won't light when called. The flue fan is working ok. I checked the gas valve solenoid feed and I'm only getting 40 volts. I'm sure this is a 230v solenoid. It's a Honeywell V4700E1007 valve. So not sure why I'm getting voltage drop. I've got the pcb out at the moment and the board itself looks fine but the big resistor on the side of the case looks a bit iffy and the soldered joints don't look too good. The boiler has been looked after and it's generally ok.
The three way valve is a Sunvic Unishare. I've read some bad reports about these and wonder if this is where my voltage drop is. I'd like to keep this boiler running over the coming winter if poss with a view to fitting a new modern system complete early next year. I've just escaped redundancy at work and the house alarm has just packed up as well so don't really want to splash the cash if I can help it.
Thanks for any help.
As in the title. Switched the heating on last week and it seemed a bit erratic, not quite reaching temperature. It wouldn't come on at all yesterday.
Checked all the stats and the three way valve which all appear ok. The pilot is on but the main burner won't light when called. The flue fan is working ok. I checked the gas valve solenoid feed and I'm only getting 40 volts. I'm sure this is a 230v solenoid. It's a Honeywell V4700E1007 valve. So not sure why I'm getting voltage drop. I've got the pcb out at the moment and the board itself looks fine but the big resistor on the side of the case looks a bit iffy and the soldered joints don't look too good. The boiler has been looked after and it's generally ok.
The three way valve is a Sunvic Unishare. I've read some bad reports about these and wonder if this is where my voltage drop is. I'd like to keep this boiler running over the coming winter if poss with a view to fitting a new modern system complete early next year. I've just escaped redundancy at work and the house alarm has just packed up as well so don't really want to splash the cash if I can help it.
Thanks for any help.
