both, simply does not fire unless we fiddle with the switches both timer and selectors, is it to do with the primary temperature sensor of CH or DHW?is it just the CH it does this with or does it do with the HW too ?
Is it overheating?both, simply does not fire unless we fiddle with the switches both timer and selectors, is it to do with the primary temperature sensor of CH or DHW?
not sure to be frank, but none of the rest buttons illuminated.Is it overheating?
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