Honeywell ST699 tripping RCD when sliding CH switch
Honeywell ST699 tripping RCD when sliding CH switch
We have a back boiler controlled by a Honeywell ST699 programmer (CH & HW). The CH has been switched off all summer, with the HW continuing to be run as normal.
I've just tried sliding the CH slider switch to turn on the CH, and it's tripping the RCD. I turned off the CH slider, reset the RCD, tried again and the exact same thing happened. Before resetting the RCD, I tried turning on the CH using the slider whilst the electricity was off, attempted to reset the RCD - and it wouldn't...
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by DaveD1977
This has been automatically posted in the DIYNot Forum on DIY Talk. The new DIY Forum
Honeywell ST699 tripping RCD when sliding CH switch
We have a back boiler controlled by a Honeywell ST699 programmer (CH & HW). The CH has been switched off all summer, with the HW continuing to be run as normal.
I've just tried sliding the CH slider switch to turn on the CH, and it's tripping the RCD. I turned off the CH slider, reset the RCD, tried again and the exact same thing happened. Before resetting the RCD, I tried turning on the CH using the slider whilst the electricity was off, attempted to reset the RCD - and it wouldn't...
Read more
by DaveD1977
This has been automatically posted in the DIYNot Forum on DIY Talk. The new DIY Forum