potterton promax he plus not always firing up

Discussion in 'Plumbing and Central Heating' started by potsy32, 14 Jul 2009.

  1. potsy32

    potsy32

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    Hi

    I have a Potterton Promax HE boiler

    Recently i have had a problem where it is not firing up in line with the timer. Basically all the timing settings are correct. For example, set to come on at 5.30am and go off at 9.00am but it just does not fire up and i have to press the reset button for it to fire up.

    This then works but it only stays on for about 1 hour and then just goes off. Then if i press the reset button again it fires up.

    Has anybody got any ideas what the problem might be?

    Any help would be greatly appreciated.

    Thanks in advance.
     
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  3. allconfuzed

    allconfuzed

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    if the case is warm its probably the inner combustion door seal, or a leak of products from the appliance knocking out the inner overheat,
    do not repair yourself
     
  4. Agile

    Agile

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    Random lockouts are a common problem with this boiler although yours seems more consistant than some.

    Its often a difficult task for an engineer to deal with because it could be one of several causes and they include the PCB and gas valve which are both expensive parts.

    I usually suggest a fixed price repair by BG or the manufacturers as both can throw parts at it until they find the fault by trial and error rather than diagnostic deduction.

    Tony
     
  5. That is british gas standard fault finding procedure; throw as many parts at it as you can. It's all most of em know.
     
  6. potsy32

    potsy32

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    Thanks for your reply's. I've got someone coming to have a look for me
     
  7. nickso

    nickso

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    pot, kettle.
     
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  9. nickso

    nickso

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    and what pray tell would your "diagnostic deduction" be in this case glazier?
     
  10. Agile

    Agile

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    In this case if its only once a day or less then there is no possibility of making any reasoned diagnosis.

    All that can be done is to check the obvious and if that does not identify any faults to change the PCB and after that the gas valve.

    I get the impression that BG and Potty usually change both the PCB and the gas valve as they are unfettered by component costs and want to ensure customer satisfaction and eliminate call backs.

    As a working BG engineer what do you do?

    Tony
     
  11. nickso

    nickso

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    ah. so what happened to your policy of not taking a guess?

    you are dreaming again glazier. BG are going mental for parts cost, putting a pcb and a gas valve on the same job will certainly attract a phone call from a manager to "discuss" the reason.

    if you are asking me to make a guess then i would plump for pcb if nothing else is obvious. back in the day when BG didnt demand that you close all jobs down, rather than leaving them open to phone and check that it was fixed, i would have gone back round and removed the pcb and tried something else had it not sorted it.
     
  12. Agile

    Agile

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    The only way to remove the likelyhood of not fixing the boiler is to replace both on the visit.

    BG either need to accept the higher spares cost or accept some call backs will be inevitable.

    Tony
     
  13. nickso

    nickso

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    recalls it is then. anything that doesnt impact on cost is what they are looking for. since banning all re-checks my recalls have gone up, yet this isnt something they will consider as a factor when moaning about my productivity. wlecome to the swings and roundabouts of BG employment.
     
  14. DIYnot Local

    DIYnot Local

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