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ch programmer

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    Faulty CH programmer

    A couple of days I switched on my Sunvic 107XL programmer for central heating. The programmer now makes loud clicking noises and flashes at random times during the switched on period. It's like it switches on/off in a loop for a few seconds or minutes failing to stay on, then stays on for...
  2. T

    Underfloor heating into existing Y plan heating.

    Hi, some years ago I had wet UFH installed in my conservatory. It was just chopped into the existing Y plan wiring and plumbing. The problem being that when UFH demands the CH/HW runs and vice versa. We have put up with it but now as we are spending more time at home it needs fixing. The best...
  3. D

    Central Heating/Hot Water control problem

    Hi All, I'm wondering if anyone has any idea what is happening here. I have a CH/HW system made up of Worcester Greenstar boiler, 5 radiators and hw tank controlled by Danfoss FP715Si programmer and Danfoss Thermostat (RF). Programmer is set to run All Day from 0630 to 2230 Over the last year...
    • DR Wz
    • Thread
    • ch programmer intermittent fault
    • Replies: 6
    • Forum: Electrics UK
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