A pensioner I know had only 2 radiators working out of 6 so I drained the system down,removed the radiators and gave them a good blast through then cleaned all the pipework and manifolds.On re-instating the sytem it was all going well and the 6 radiators were now very hot.Thats when we realised that the boiler was not shutting down.The Hi-off-lo switch works to power the main burner.Thinking the hi or lo stats were faulty they were both changed to no avail.
Could anyone tell me at what temperature the hi and lo stats should operate at ? It seems to be a very course method of control although the manual does mention an optional programmer.
At the moment I am guessing that the wires from the hi-lo stats have a short somewhere which is preventing the stats from doing their job.As the boiler is probably around 30 years old I expect the internal wiring may have degraded a bit.I'm a bit puzzled by all this as I never touched the boiler so not sure if it's pure coincidence/bad luck.
Before I dig the AVO out and go faultfinding can anyone think of anything obvious I should check or are there any known faults in this area ?
thanks for reading
big al
Could anyone tell me at what temperature the hi and lo stats should operate at ? It seems to be a very course method of control although the manual does mention an optional programmer.
At the moment I am guessing that the wires from the hi-lo stats have a short somewhere which is preventing the stats from doing their job.As the boiler is probably around 30 years old I expect the internal wiring may have degraded a bit.I'm a bit puzzled by all this as I never touched the boiler so not sure if it's pure coincidence/bad luck.
Before I dig the AVO out and go faultfinding can anyone think of anything obvious I should check or are there any known faults in this area ?
thanks for reading
big al