main combi 24 he

  1. B

    Main 24 HE Combi Boiler strange behaviour

    Hi I'm looking for help with strange behaviour from a Main 24 HE Combi Boiler. Symptoms are when turning the boiler on regardless of either heat & DHW or just DWH are after 5 secs the lights show: Burner light is off Flame failure light is flashing slowly Power on is on The boiler won't fire...
  2. S

    Fitting a Wirless Thermostat to a Main 24HE Boiler

    Hi, I've bought a Honeywell CM700 wireless thermostat and want to fit it to a Main 24 HE boiler. The boiler has a timer clock already installed. Do I just completely unwire the timer clock and wire in the new receiver using the neutral, live and signal 1 and signal 2 feeds that used to be...
  3. E

    Main Combi 24 he timer help

    Hi I have a main combi 24 he boiler. Yesterday I fitted a Salis rt310rf room stat to replace an old Drayton none digital one. When I had the front cover off the boiler I noticed the back of the grasslin mechanical timer is pretty warm (even when heating is not running). So I replaced it with a...
  4. Dik-hurricane

    Main Combi 24 HE Hot water runs hot cold hot

    Hi all After some suggestions on a problem I'm having with my combi boiler, its a main combi 24 he. The problems occurs mainly when running the kitchen tap or the shower, the hot water runs for a few minutes and then goes cold for a little while and then back to hot again, and does this...
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