Is your central heating running when only the hot water should be heating? If so and you have motorised valves this may solve your problem!<\/p>\n
Retro radio usually blogs about radio valves rather than the sort that control water. But over the years I’ve had several common faults with motorised valves that control the hot water and central heating. There are several good forums that describe various plumbing problems – the trouble is identifying what’s wrong.<\/p>\n
Obviously anything to do with the gas supply needs expert assistance so call a registered plumber! Electrical issues that don’t require rewiring, just replacement of faulty components should be within the DIYers remit but as ever<\/p>\n
don’t attempt to work on any electrical devices without switching off the mains supply first!<\/p><\/blockquote>\n
The faults –<\/h3>\n
Central heating runs with radiators hot when only hot water should be heating<\/strong> – this was an odd fault as the central heating appeared to function normally when the room thermostat was set higher the boiler switched on so the motorised valve was functioning. The problem became obvious during spring when the boiler was just supposed to be heating the hot water and room temperature was warm so no need for radiators being on.<\/p>\n
As the radiators were hot the motorised valve controlling the CH must be open so I switched off the power to the central heating system and removed the metal shield from the valve. Inside there’s a round synchronous motor connected with two orange wires. There’s a manual level on the side of the valve to open it if the motor fails. You can check the synchro motor turns by pushing the level up until it engages in a slot. If you let it go the springs pull the lever back and closes the valve.<\/p>\n\n\t\t