I ahve a Halstead Ace High boiler.
Recently it has begun to randomly stop working.
When it happened first I decided to drain the system down and refill it.
As soon as I turned the pressure vent knob it fired up.
Thereafter whenever it does it I just 'nudge'the system by turning the vent valve.
It has begun to do this more frequently.
When in the failed state the flow switches move freely and operate but the CH pump does not spin up and the igniters do not fire.
DHW simply runs through unheated.
Any Ideas?
Many thanks
Recently it has begun to randomly stop working.
When it happened first I decided to drain the system down and refill it.
As soon as I turned the pressure vent knob it fired up.
Thereafter whenever it does it I just 'nudge'the system by turning the vent valve.
It has begun to do this more frequently.
When in the failed state the flow switches move freely and operate but the CH pump does not spin up and the igniters do not fire.
DHW simply runs through unheated.
Any Ideas?
Many thanks