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    Honeywell DT90E - Installation Help

    Hi, I have just installed an Honeywell DT90E room thermostat to a Worcester Combi 30si but the boiler is not firing up when I'm increasing the room temperate on the thermostat. I've wired the Honeywell DT90E room thermostat with the following:- A on the stat to LR on the boiler B on...
  2. D

    honeywell dt90e to worcester combi 30 si

    Can someone advise me how to hard wire a honeywell dt90e room thermostat to a worcester 30 si combi boiler.
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