Harry Bloomfield verbally sodomised in
:

It happens that Tom B formulated :
Looking on http://www.showerdoc.co.uk/faq/multi-meter.html it says that
if it is a good solenoid the resistance will be 3.4K Ohms or above.

Which is obviously wrong!

'....or above' could include infinite resistance, in other words an
open circuit - with no change in the meter display whether connected
across the solenoid or not. What should have been specified is a range
of reading (min and max) which should be assumed to mean the solenoid
is probably OK.

I
can't get any resistance reading, suggesting that the solenoid has
failed.

If the meter indicates no change between connected directly across the
solenoids terminals and not connected across it, then you can safely
assume the solenoid is faulty. Check the meter in not on 'Hold' and
that the resistance range setting is also correct.


Interesting.

--
Phil Kyle™

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