Hi Anyone that can help.
I have an ICOS HE15 Boiler, in new house less than 5 years old.
The problem I (intermittently) have is that when the Central Heating is switched off - either via the programmer, or through reaching temparature and the thermostat clicking off, the pump in the cylinder cupboard keeps on running.
I've had two engineers out now, and both the Danfoss Programmer, and Danfoss HPA2 Valve have been replaced.
I have also replaced the thermostat myself .
This problem continues, and it's really driving me mad. I'm afraid to leave the heating on when i'm out because the pump continues to run and run and run and the cupboard gets hotter and hotter.
On the boiler the 'C' is lit with the burner light flashing all the time, as if it's on it's over-run programme (but it never stops)
In the cyliner cupboard you can hear the pump continue to run. The valve has closed, because the rads do not get hot, instead, the heat in the cupboard continues to rise.
The only way i've figured out to switch it of, is via the mains switch on the wall next to the programmer (switching off the boiler doesn't stop it). If I leave it off for a few hours, when I switch it back on it doesn't continue, on some ocassions though the pump starts running again straight away.
The other way i've found of stopping it is (maybe this is a clue) if I switch the valve in the cupboard (top one) to Manual, then allow it to return back to auto quite a few times (at least 20) it finally stops the pump running.
Any help is very much appreciated before this costs me an arm and a leg.
Image of Cyliner cupboard is in my album.
What's causing me this problem?
Thanks
I have an ICOS HE15 Boiler, in new house less than 5 years old.
The problem I (intermittently) have is that when the Central Heating is switched off - either via the programmer, or through reaching temparature and the thermostat clicking off, the pump in the cylinder cupboard keeps on running.
I've had two engineers out now, and both the Danfoss Programmer, and Danfoss HPA2 Valve have been replaced.
I have also replaced the thermostat myself .
This problem continues, and it's really driving me mad. I'm afraid to leave the heating on when i'm out because the pump continues to run and run and run and the cupboard gets hotter and hotter.
On the boiler the 'C' is lit with the burner light flashing all the time, as if it's on it's over-run programme (but it never stops)
In the cyliner cupboard you can hear the pump continue to run. The valve has closed, because the rads do not get hot, instead, the heat in the cupboard continues to rise.
The only way i've figured out to switch it of, is via the mains switch on the wall next to the programmer (switching off the boiler doesn't stop it). If I leave it off for a few hours, when I switch it back on it doesn't continue, on some ocassions though the pump starts running again straight away.
The other way i've found of stopping it is (maybe this is a clue) if I switch the valve in the cupboard (top one) to Manual, then allow it to return back to auto quite a few times (at least 20) it finally stops the pump running.
Any help is very much appreciated before this costs me an arm and a leg.
Image of Cyliner cupboard is in my album.
What's causing me this problem?
Thanks