I Have a Potterton Neataheat 10-16 Electronic Boiler which refused to start the other day.
The fan starts and as soon as the pressure switch trips everything stops including the fan, it does not get as far as opening the gas valve.
I have removed the pressure switch and tested it with my meter. The resistance between the Brown and White wires is Zero ohms, when you trip the switch the resistance between the Brown and Orange wires is 50 ohms. I was getting an even higher reading than this, but got it lower after fiddling with contacts. I am sure it should be Zero ohms so I have ordered a new switch.
The thing that is puzzling me is that when connected to the boiler the Brown wire receives zero volts once the pressure switch has tripped, this is the same live circuit that powers the fan. This explains why the fan cuts out. My guess is that I also have a fault on the PCB.
I have read some posts here that refer to a faulty relay. Does the 10-16 Electronic model have a relay? I cant see one, but there is a black plastic cover over part of the PCB, is it under this?
Please help as we are freezing.
The fan starts and as soon as the pressure switch trips everything stops including the fan, it does not get as far as opening the gas valve.
I have removed the pressure switch and tested it with my meter. The resistance between the Brown and White wires is Zero ohms, when you trip the switch the resistance between the Brown and Orange wires is 50 ohms. I was getting an even higher reading than this, but got it lower after fiddling with contacts. I am sure it should be Zero ohms so I have ordered a new switch.
The thing that is puzzling me is that when connected to the boiler the Brown wire receives zero volts once the pressure switch has tripped, this is the same live circuit that powers the fan. This explains why the fan cuts out. My guess is that I also have a fault on the PCB.
I have read some posts here that refer to a faulty relay. Does the 10-16 Electronic model have a relay? I cant see one, but there is a black plastic cover over part of the PCB, is it under this?
Please help as we are freezing.