have I broken my on board power supply?

Discussion in 'Motorhome Chat' started by Emmenay, Jul 7, 2013.

  1. Emmenay

    Emmenay Read Only Funster

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    I borrowed someone's 240 supply lead yesterday and didn't realise it was wired wrong. Now the power supply unit on board is showing a flickering reverse polarity light even though it's corrected and everything is running fine.
    Have I broken it?
     
  2. Ed Excel

    Ed Excel Funster

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    It's unlikely you've done any damage by connecting a reversed polarity supply. The main issues with RP are safety related.
     
  3. G8WVW

    G8WVW Read Only Funster

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    Your flickering RP lamp is probably connected between Earth and Neutral. If it is on, it means the N to E voltage is must greater than it should be; often a few volts but nothing large enough to 'flicker' your RP lamp. Check your connections again. Check you have an earth connection too.

    Do you have an AC voltmeter? Check:-
    L to N, 200-240v
    L to E, 200-240v
    N to E, something <5v but can be higher with long site/EHU cables.

    Assume you're in the UK?

    Cheers.
     
  4. Emmenay

    Emmenay Read Only Funster

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    Yes in UK. I haven't got a voltmeter at present but have tried different supply units such as a sinewave generator and a small power pack, both of which the R/P is flickering to the point of almost being fully on. Also tried different cables.
    So far all roads lead to a defect in the main unit :cry:
     
  5. Starburst2

    Starburst2

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    Have you checked the input socket connections on you vehicle, may have a loose wire making intermittent contact.
    Doug
     
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