Potterton suprima 50 lockout

Discussion in 'Plumbing and Central Heating' started by tonykiwi, 1 Oct 2010.

  1. tonykiwi

    tonykiwi

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    I have a potterton suprima 50 with an intermittent lockout, usually happens when firing up when in heating mode. Called for heat and it will not start - not even runs the fan. Press reset and it is up and running but it's not consistent. Any clues???
     
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  3. adlplumbing

    adlplumbing

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    bleed your rads
     
  4. 45yearsagasman

    45yearsagasman

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    Has it been checked/serviced recently?Has the PCB ever been changed from the original?Intermittent lockouts are caused by many things on these boilers and you need to be competent to investigate inside the combustion cover.
     
  5. Beerlover

    Beerlover

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    45YAGM is leading you the right way, remove the right hand side panel (screw above the temp control); undo the top screw and tilt pcb forward - has the pcb a 'skid mark' in the middle by the 2 diodes? If YES then you have the old pcb and it's sh*ged.

    Or if it is a grey box you need a RGI as it is more complex than that.
     
  6. nickso

    nickso

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    the "skidmark" is a result of heat and doesn't necessarily mean the pcb has had it. if thats all you rely on to diagnose it thats poor information IMO.
     
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  8. Beerlover

    Beerlover

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    Ex Baxi/Potterton - that's what we looked for on nuisance lockouts. The overheating issue was 60s and above fitted without compartment ventillation which caused a totally diiferent nuisance lockout.

    But what do I know ;)
     
  9. nickso

    nickso

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    not saying you know nothing but look on any PCB and you will see a hot spot. it doesn't mean it's ******.
     
  10. kevplumb

    kevplumb

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    now now girls calm down :LOL: :LOL: ;)
     
  11. nickso

    nickso

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    sorry, it's that time of the month :LOL:
     
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  12. Beerlover

    Beerlover

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    Mine too, we must have synchronised :oops:
     
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    DIYnot Local

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