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Thread: Electrical Water Temperature Senders - How To Test Folks?

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    Electrical Water Temperature Senders - How To Test Folks?

    G’day NP.com.au Team,

    Electrically challenged skills I do have and are hoping for some guidance on a possible NPT Yanky water temperature sender issue believed found for a custom aftermarket nuffy need.

    As best as I can find tonight the additional silly Yanky dual fan module appears to be powered up yet still no action even on the old trucks first 90C Craig Davies Fans historical settings as always before!

    All roads nuff nuff logically (I think) point back to the Yanky sender, is there kindly anyway to mechanically/electrically test its funkationality?
    Many thanks!
    Mark







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    Mark is the sensor two wire or single wire mate? If single it should just be a simple switch, on (at the set temp) and off. So if you heat some water to the set temp, attach a DMM to the thread and then to the wire, if the switch is working it should trigger at the set temp. Should. Lol.
    Last edited by mudski; 9th October 2019 at 11:59 AM.

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    MB (9th October 2019)

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    Thanks Mark mate, appreciated!
    Think it is single wire so I’ll give that a go tonight @matfew sparky is in the hills later this evening too so might be able to handball this task to him


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    Quote Originally Posted by MB View Post
    Thanks Mark mate, appreciated!
    Think it is single wire so I’ll give that a go tonight @matfew sparky is in the hills later this evening too so might be able to handball this task to him


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    Yeah should work in theory. It works on the similar principle to an oil pressure switch, but is activated by heat. The switch is just an earth contact for the fan.

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    Any luck mate?

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    MB (11th October 2019)

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    Haven’t had a crack myself yet mate and poor old Matfew has been flat out like a lizard drinking, 4:00am starts the poor bugger!


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    Quote Originally Posted by MB View Post
    Haven’t had a crack myself yet mate and poor old Matfew has been flat out like a lizard drinking, 4:00am starts the poor bugger!


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    I have to drop off parts to a customer in Yarra Glen in the morning. I can drop past and take a look if you like.

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    MB (11th October 2019)

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    That’d be awesome, thanks mate


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    Quote Originally Posted by MB View Post
    That’d be awesome, thanks mate


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    No worries. I'll call you in the morning.

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    Yeah you would test that the same way as a thermostat in a pot. Test to boil.
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