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Relay testing

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1 Relay testing on 2013-01-09, 3:31 pm

To test if a relay is working, turn the power off to the load and disconnect both wires from the relay terminal. Insert an ohm-meter across the relay terminals and use the control's manual override to turn the relay on and off. When on, the meter will show a short or zero ohms. When off, the meter will show 'OL' for overlimit or a similar code, depending on the meter.

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