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Hi,
I have a Vaillant EcoTec Plus 630 boiler with a Heatrae Sadia CL250S28 Megaflo.
The boiler is working for the underfloor heating and the central heating, but is not heating the hot water.
The motorised valve for the hot water on the megaflo is open, and the overheat reset on the tank is ok, but there doesn’t appear to be a demand for the boiler to fire up coming from the hot water system!
Adjusting the thermostat on the megaflo opens and closes the motorised valve.
The pressure in the system is fine and the programmer is set correctly and working ok.
Any ideas please?
I have a Vaillant EcoTec Plus 630 boiler with a Heatrae Sadia CL250S28 Megaflo.
The boiler is working for the underfloor heating and the central heating, but is not heating the hot water.
The motorised valve for the hot water on the megaflo is open, and the overheat reset on the tank is ok, but there doesn’t appear to be a demand for the boiler to fire up coming from the hot water system!
Adjusting the thermostat on the megaflo opens and closes the motorised valve.
The pressure in the system is fine and the programmer is set correctly and working ok.
Any ideas please?
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