The boiler I have is a gas fired Stelrad Ideal Classic NF 60. The instruction manual with it is dated 1991. A possible important point to add is that I only use the boiler for the central heating, this means during the summer months I fire up the boiler once a month just to give the system a run.
The problem I have is this: a few days ago the boiler just fired up on its own accord, even though the room temperature had not fallen to the wall thermostat dial setting. I then moved the thermostat wall dial clock-wise and anti-clock, got the usual clicking sounds but this had no effect at all on the boiler, it just kept on working; to confirm – the wall thermostat dial had no effect on the turning on or off of the boiler.
To add, everything on the central heating system appears to be working fine, the radiators heating up well and pump running. There are 7 rads. in the house, of which only 4 are being used. All serviced by just one thermostat.
To stop the boiler I had to turn off the central heating switch, which is next to the timer, the pump and emersion heater.
Later on that day I turned this switch back on and found that the boiler DID NOT immediately fire up. This was good news. I then turned up the wall thermostat dial, got the click when it met with the room temperature and found the boiler started up. So it was now working correctly. Then, yesterday, the boiler again fired up on its own accord even though the room temperature hadn't dropped enough. I again turned the wall thermostat dial left and right and, as before, the stat had no effect in turning the boiler on or off.
I again turned off the central heating switch. Later that same day I turned it back on and as of now the system is working fine.
I have taken off the boiler casing and I'm wondering if the issue is with the boiler thermostat. There is a wire/lead going into the top left hand corner of the Heat Exchange. Is this where the stat is? And does anyone think this wire/lead/stat will need replacing? (The instruction manual I have has a diagram of a breakdown of the parts of the boiler, but the manual says it's for an Ideal Classic NF 30, whereas I have an NF 60. In the manual drawing there is no wire/lead going into the Heat Exchange – so the boiler I have is slightly different).
I would be very grateful if someone could help me with this problem as paying someone to come out and repair it will cause me an even greater problem.
Thank you
Paul
The problem I have is this: a few days ago the boiler just fired up on its own accord, even though the room temperature had not fallen to the wall thermostat dial setting. I then moved the thermostat wall dial clock-wise and anti-clock, got the usual clicking sounds but this had no effect at all on the boiler, it just kept on working; to confirm – the wall thermostat dial had no effect on the turning on or off of the boiler.
To add, everything on the central heating system appears to be working fine, the radiators heating up well and pump running. There are 7 rads. in the house, of which only 4 are being used. All serviced by just one thermostat.
To stop the boiler I had to turn off the central heating switch, which is next to the timer, the pump and emersion heater.
Later on that day I turned this switch back on and found that the boiler DID NOT immediately fire up. This was good news. I then turned up the wall thermostat dial, got the click when it met with the room temperature and found the boiler started up. So it was now working correctly. Then, yesterday, the boiler again fired up on its own accord even though the room temperature hadn't dropped enough. I again turned the wall thermostat dial left and right and, as before, the stat had no effect in turning the boiler on or off.
I again turned off the central heating switch. Later that same day I turned it back on and as of now the system is working fine.
I have taken off the boiler casing and I'm wondering if the issue is with the boiler thermostat. There is a wire/lead going into the top left hand corner of the Heat Exchange. Is this where the stat is? And does anyone think this wire/lead/stat will need replacing? (The instruction manual I have has a diagram of a breakdown of the parts of the boiler, but the manual says it's for an Ideal Classic NF 30, whereas I have an NF 60. In the manual drawing there is no wire/lead going into the Heat Exchange – so the boiler I have is slightly different).
I would be very grateful if someone could help me with this problem as paying someone to come out and repair it will cause me an even greater problem.
Thank you
Paul