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Mojo21  
#1 Posted : Friday, July 5, 2013 1:13:31 PM(UTC)
Mojo21

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Joined: 7/5/2013(UTC)
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Hello all,

I need to find out if I am crazy or bad at testing replacement defrost thermostats. After my coils were icing up, I pulled my heating element and thermostat to test for continuity. When the thermostat came up with no continuity in a glass of ice water, I ordered a replacement. The replacement registered no continuity when cold either. I was sent another thermostat assuming that was defective. New one, same issue. What am I doing wrong here? Could I have received two bad replacement thermostats. I am letting them sit in ice water for several minutes then simply putting each wire end in contact with my multimeter. No tone registers (I also never hear a click coming from the thermostat). Any help would be appreciated.

-Ryan
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denman  
#2 Posted : Saturday, July 6, 2013 2:59:10 AM(UTC)
denman

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I am not a big fan of putting defrost thermostats in water. If any water gets into the device it will freeze and screw up the thermostat.

Instead, hold it's metal face onto an ice cube.

Did you check your meter before starting your test?
Always short the meter leads together before doing resistance checks.
this tells you that the meter is OK and also wil show you if there ios a zero offset when checking resistance.
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