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    honeywell electronic timer switch

    My ch wasn't working I have changed the diverter valve. the ch now works when operated from the boiler but not from the timing switch. I thought the switch had gone wrong so I bought a new timer. A Honeywell electronic timer. There are two cables from the boiler one for the clock and one for 3...
  2. S

    help with a timing device

    hi I have replaced my timing device. the boiler works when I operate it from the boiler. the timing device has power and works but does not seem to switch on the ch i have a potterton 80 boiler and i have connected a honeywell timing device help have i just wired up the timing device...
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    potterton puma 80

    just discovered this site can any one give me some advice I have a potterton puma combi boiler I have hot water but no central heating. if the pump is cold and I use switch on boiler to switch on ch the boiler fires up for a few seconds then switchs itself off any ideas please
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