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Old 26th Sep 2019, 9:04 pm   #50
ms660's Avatar
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 9,186
Default Re: Kolster-Brandes MR10

Originally Posted by DonaldStott View Post
So what we found was that if you remove the valve and check on a low Ohms range first between pins 4 & 5 of the valve itself, then between 4 & 9 and 5 & 9 you get a reading of 1 - a short/open circuit?
If the resistance reading is infinity the heaters are open circuit.

If the resistance reading is zero the heaters are short circuit.

If the series resistance when cold is between approx. 10 and 20 ohms the heaters should be ok.

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