Help please.
I have an Ideal Classic HF60 boiler (not condensing or combi on Y plan system) inherited with the house, probably maximun 10 years old that has been reliable and appears to work fine when it does, but intermittantly I notice there is demand for HW/CH (neon on on PCB), but the boiler isn't firing up. I also notice that the thermostat neon behing the knob is not illuminated.
However, if I then turn the power switch off and leave it for a few minutes, or even switch off the demand from the timer and then turn on again, the boiler will fire up. Sometimes I may have to wait a while before I can sucessfully do this (until the boiler cools down??)
Eventually I can always get the boiler to fire up. As expected the neon behind the thermostat knob will then be illuminated.
The boiler may then function normally for a day or two or may decide to be difficult almost straight away. There seems to be no rule. I assume there is no difference whether the boiler sees demand for HW and/or CH.
I have replaced the flue fan and the pressure switch, more as a matter of elimination. Made no discernable difference.
I have also just had it serviced and as expected it has made no difference.
My thoughts are possibly problem with either PCB or NTC thermostat (what is that?)
Anyone any similar experiences, idea or thoughts on the matter????
Thanks
I have an Ideal Classic HF60 boiler (not condensing or combi on Y plan system) inherited with the house, probably maximun 10 years old that has been reliable and appears to work fine when it does, but intermittantly I notice there is demand for HW/CH (neon on on PCB), but the boiler isn't firing up. I also notice that the thermostat neon behing the knob is not illuminated.
However, if I then turn the power switch off and leave it for a few minutes, or even switch off the demand from the timer and then turn on again, the boiler will fire up. Sometimes I may have to wait a while before I can sucessfully do this (until the boiler cools down??)
Eventually I can always get the boiler to fire up. As expected the neon behind the thermostat knob will then be illuminated.
The boiler may then function normally for a day or two or may decide to be difficult almost straight away. There seems to be no rule. I assume there is no difference whether the boiler sees demand for HW and/or CH.
I have replaced the flue fan and the pressure switch, more as a matter of elimination. Made no discernable difference.
I have also just had it serviced and as expected it has made no difference.
My thoughts are possibly problem with either PCB or NTC thermostat (what is that?)
Anyone any similar experiences, idea or thoughts on the matter????
Thanks
