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worcester 38cdi

  1. M

    38CDI: doesn't fire on heat demand, and Grundfos UPM3 stuck

    The cold snap made me switch heating on for first time in 6 months which has caused 2 unrelated problems on a well maintained Worcester Bosch 38CDI. Grateful for any advice on: 1) boiler doesn't respond to Nest thermostat 1's call for heat, either wirelessly or on manual override next to the...
  2. D

    Honeywell ST9400S1001 to Hive SLRC1

    The boiler is a WB GreenStar 38CDi Classic. We bought the Hive Thermostat Receiver and Hub for Combi boiler. The Honeywell had cabling to its Earth, Live, Neutral 3 and 4 terminals (terminals 1 and 2 not connect/wired). The Hive Receiver was wired the same. All paired and Hub set up...
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