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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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Central Heating : Wiring Query
I have scanned through the numerous queries regarding problems with
Central Heating when the Hot Water part of the system is working fine (the problem I also have) and noticed that the majority of times replacing the motor sorts the problem. I had a heating engineer out for 2 1/2 hours on Friday trying to find the cause of the problem and needless to say he thought the motor needed replacing but it is fine. The question I had was what triggers the boiler to start up if the microswitch wire on the central heating motorised valve unit is deliberately capped off with a junction box? The engineer and myself both looked for a stray wire to attach to the other side of the junction box to no avail. Seems every issue I ever have with houses I own is a 'non-standard' setup. Thanks in advance, John |
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Central Heating : Wiring Query
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Central Heating : Wiring Query
Not sure whether my system is Y or S plan but based on what the
engineer said I would think it is Y plan. The motor I mentioned is indeed the motorised valve motor. I have a Potterton EP2002 control panel. Really ought to know what make my boiler is but I can't remember. Hopefully there is an engineer at home working on the problem as we speak, with some knowledge of the electrical side of central heating. The engineer who came round on Friday said the on-call guy for the weekend wasn't qualified to work on gas systems (not Corgi registered) which I thought was particularly useful, not. Thanks for your prompt response, John |
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Central Heating : Wiring Query
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#6
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Central Heating : Wiring Query
Mystery solved.
Turns out that my heating system has 1 valve for water heating and 2 valves for central heating. The central heating valves are located under a hatch in the understairs cupboard and upstairs in the front bedroom cupboard underneath the built in shelves (convenient I don't think). The upstairs CH valve had a faulty motor (the cause behind 90% of CH problems where you get water heating but no room heating it seems to me) and once swapped every thing is now working correctly. I'll have to leave some instructions as to where all these valves are for the next people who live in this bizarre house. Thanks for all the advice, John |
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Central Heating : Wiring Query
Turns out that my heating system has 1 valve for water heating and 2
valves for central heating. Then it is probably S Plan Plus. The best system. Ensure you have programmable room thermostats in each zone. Then you can set different timings for the bedrooms vs the reception rooms. There's no need to heat the bedrooms during the day. Christian. |
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