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If you can get the same model control panel I'd just DIY it but that's me.
I did this when our underfloor heating controller died.
Did miss a setting that was controlled by a jumper that meant it was using the air temp thermostat rather than the floor temp thermostat which was problematic with the controller in the airing cupboard along with our boiler and hot waster tank...
Howard
The control panel for our central heating/ hot water has started turning itself off after a few minutes of running. Flicking the fused switch next to it off and on again brings it back to life only for it to go off again shortly after. The fuse in the switch isn't being blown so my first thought is the control panel is on the blink. It looks pretty old, a Honeywell ST699B1002 and I wonder if this is the likely suspect or if something else in the heating system might be affecting it. Having said that I wouldn't expect the panel to go off completely if it was, possibly just turn off the heating or something.
Any thoughts? Next question would be, if it is the panel, is it a diy job to fit a new control panel or best left to a electrican? Thanks