no hot water

D

Davek73

Joined
28 May 2014
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Location
Aberdeen
Country
United Kingdom
can anyone help i have no hot water I've tryed the valve moving little handle but not working i have the water tank in loft
 
what is the cylinder thermostat set to? Does the programmer work? What valve - 2 or 3 port?
 
So it’s likely to be the cylinder thermostat or the 2 port valve (microswitch or synchron motor).
 
Using a multimeter. Try latching the lever into manual and create a heating demand, if water goes to cylinder as well then it’s likely to be the zone valve
 
Open the hot water valve manually - make sure the little lever is hooked in so it stays in the open position - there is a little indent where the lever locks in. Then turn on the heating by raising the room thermostat - this is so the boiler comes on. Then feel the pipes on the HW valve - should start getting hot. This will heat the HW tank until you can get the valve fixed.
 
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