Potterton EP2002 Programmer - Intermittent fault

Discussion in 'UK DIY' started by Fresh_Air_Rider@Hotmail.com, Aug 21, 2006.

  1. Guest

    Hi all

    I have a Potterton EP2002 Programmer, for controlling my central
    heating system, which has suddenly started to behave erratically. By
    that, I mean that it sometimes works continuously for perhaps tweleve
    hours and then stop working and the LCD goes blank. Other times, it
    runs for a few minutes and then stops before running again for another
    few minutes.

    I'm buy no means an expert, but could anyone please reassure me that if
    I ordered a replacement programmer and attached it to the existing back
    plate, it would resolve the problem ?

    I'm just guessing that it might be a capacitor or something within the
    programmer that has failed.

    There have been a lot of thunderstorms in my area lately and I just
    wondered if that might be a contributory factor.

    Could it be something else such as the rechargable battery that needs
    replacing or even the backplate itself that is not providing a good
    connection ?

    I'd be very greatful if someone could please give me some advice on
    this one.

    Best regards
    David
    , Aug 21, 2006
    #1
  2. raden Guest

    In message <>,
    writes
    >Hi all
    >
    >I have a Potterton EP2002 Programmer, for controlling my central
    >heating system, which has suddenly started to behave erratically.
    >
    >I'd be very greatful if someone could please give me some advice on
    >this one.
    >


    From your description, it sounds like it's fucked

    the control chain inside is literally controller - transistor - relay


    --
    geoff
    raden, Aug 28, 2006
    #2
  3. In article <>,
    <> wrote:
    > I have a Potterton EP2002 Programmer, for controlling my central
    > heating system, which has suddenly started to behave erratically. By
    > that, I mean that it sometimes works continuously for perhaps tweleve
    > hours and then stop working and the LCD goes blank. Other times, it
    > runs for a few minutes and then stops before running again for another
    > few minutes.


    To try and identify the problem, does the clock still keep time when the
    display goes blank?

    > I'm buy no means an expert, but could anyone please reassure me that if
    > I ordered a replacement programmer and attached it to the existing back
    > plate, it would resolve the problem ?


    Almost certainly.

    > I'm just guessing that it might be a capacitor or something within the
    > programmer that has failed.


    > There have been a lot of thunderstorms in my area lately and I just
    > wondered if that might be a contributory factor.


    > Could it be something else such as the rechargable battery that needs
    > replacing or even the backplate itself that is not providing a good
    > connection ?


    The device will still work normally if the battery fails - except during a
    power cut.

    It would certainly be worth isolating the circuit, removing the programmer
    and checking the security of the wiring to terminals, and that it's
    getting a constant power supply - although the battery should keep it
    going if this was the fault, and of course it wouldn't operate the
    heating.

    But my guess would be a dry solder joint on the device PCB. It should be
    possible to fix this - if you're into electronics. But not economical to
    pay someone to do it.

    If you do have to replace it you might consider doing so with the 6002
    which has 7 day programming. Think it's the same price.

    --
    *A fool and his money can throw one hell of a party.

    Dave Plowman London SW
    To e-mail, change noise into sound.
    Dave Plowman (News), Aug 28, 2006
    #3

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