now if you turn all the hw/heating off on programmer.
then turn the power back on.
the lever should have resistance as you say.
then select hw only and cyl stat up so boiler is firing.
then feel the pipes coming out of the mot valve, the one to cylinder should be hot. the one to rads should be cold.
then turn the power back on.
the lever should have resistance as you say.
then select hw only and cyl stat up so boiler is firing.
then feel the pipes coming out of the mot valve, the one to cylinder should be hot. the one to rads should be cold.