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  1. I

    Potterton PTT1 and PTT2 wiring problem

    I wonder if anybody can help with this wiring problem. Just changed over from the PTT1 for no reason other than the PTT1 is 20 years old. Wiring is the same except the PTT2 calls for a an extra live from the programmer. I wired as per the instructions but without a live to 4 TL. Started...
  2. I

    Potterton PTT1 and PTT2 wiring problem

    I wonder if anybody can help with this wiring problem. Just changed over from the PTT1 for no reason other than the PTT1 is 20 years old. Wiring is the same except the PTT2 calls for a an extra live from the programmer. I wired as per the instructions but without a live to 4 TL. Started...
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