Alphatek 3660 insulation resistance tester - code 24?

Discussion in 'Electricians' Talk' started by PowerTech, Nov 8, 2019.

  1. PowerTech

    PowerTech New Member

    Hi Everyone,

    I purchased an Alphatek 3660 insulation tester from EBay. I have no instruction manual for it and have spent some time googling but have not found one as yet and I have also emailed the company but no reply as yet.

    It appears to work OK apart from displaying "24" when I first switch it on and I would like to know what this means.

    I have tried fitting new batteries and it makes no difference.

    Does anybody know what "24" means on startup ?

    If anybody can give me any tips where to get the user manual from I would be grateful.

    Thanks in advance...

  2. spinlondon

    spinlondon Screwfix Select

  3. PowerTech

    PowerTech New Member

    Thanks for the reply, I have seen this post whilst googling and I’ll try emailing them...
  4. Tony Goddard

    Tony Goddard Well-Known Member

    Have you put new "decent" batteries in it?, I have a (fairly old now) Metrohm digital insulation tester, it won't work on cheap batteries or rechargeables, just gives a screen "--1" and won't read - different make, different country of origin, different age, but could be a similar issue - also check the fuse, usually in the battery compartment is present and OK.

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