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honeywell

  1. W

    Correct Wiring for Honeywell chronotherm ct900 to worcester Bosch CDi 36kw

    I Wired a Honeywell programmer to a worcester Bosch 36 CDi , just to check it's wired right. L1 and L2 go to terminal 1 and 2 on the low voltage side. Terminal One has a breaker switch pic on the face of the connection, terminal 2 has a pic of a programable room thermostat pic on it. L1 is...
    • wlinton66
    • Thread
    • bosch honeywell wiring worcester worcester bosch
    • Replies: 12
    • Forum: UK Plumbers Forums
  2. H

    Honeywell CM921 screen partially lost.

    Good morning..... I wonder if I could seek some advice. I had a new boiler installed at the same time as I had underfloor heating put in. It has three Honeywell CM921 thermostats 1) Hot water. 2) Heating. 3) Underfloor heating. Both heating stats are paired with a BDR91. The screen on the CM921...
  3. townfanjon

    old honeywell trv

    just a long shot chaps, my customers dog has just eaten his TRV , (16 week old bull terrier) its the old Honeywell type , I think its a T 100, has anybody got one on a shelf in the garage they want to sell. Thank you
  4. D

    Honeywell control panel flashing constantly

    Hi there, I'm new to this site and cannot find the answer I need through other posts. My honeywell st9100c control panel for the CH keeps flashing when I put it to continuous for the heating and the heating doesn't come on. All radiators have heen bled and I've increased the pressure on my...

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