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  1. K

    Honeywell ST9400c Programmer issues - help please

    It seems when the timer was re-fitted something has gone wrong. The symptoms are: Heating only – works OK Water only – works OK However, when you want water and heating together.........the timer seems to go mad. Switching on/off multiple times.....clicking noises etc. Can anyone...
  2. K

    Looking for a thermostat

    Midnight and I must be missing something....but someone, please help. How do I put a new post on this platform?
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