Recent content by greenmekon

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    Replacing a 2-wire Programmable Thermostat

    Update: The system seems to have sorted itself out and now appears to be behaving itself! Thanks for your input.
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    Replacing a 2-wire Programmable Thermostat

    Hmm! It now seems to be half-working. When the boiler is in standby and the stat switches on, the boiler start heating. However, when the stat switches off again, either because the target temperature is reached or because of a new time setting, the boiler does not automatically switch back to...
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    Replacing a 2-wire Programmable Thermostat

    Firstly, thanks for the super fast response, I really appreciate it. I'lol take your comments on board and have another go tomorrow when my brain is less addled!
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    Replacing a 2-wire Programmable Thermostat

    I have encountered a problem whilst attempting to replace a British Gas PT5 progammable thermostat with a Homexpert (Honeywell) THR870CUK. A 15-minute job which has so far taken all day! (The combi-boiler is an Ideal Isar I'm afraid!) The original PT5 has terminals 1, 2 & 3. The incoming...
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