Testing emi board on Lenox heater for 24 volts to humidifier

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Old 12-16-16, 09:56 PM
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Testing emi board on Lenox heater for 24 volts to humidifier

I want to test the voltage for humidifier 0n emi board. Which terminal will give me the reading. I don't want to short out the board. I am thinking u2 and c. Honewell he220A1019 to board. I ll try and attach pics
 
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Old 12-16-16, 10:27 PM
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Old 12-18-16, 02:55 PM
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Yes EIM Electronic interface module I will try at post pics. I have 34 volts at the EIM on one lead only? Don t know what to check next. No other controls between EIM and solenoid on hon Elwell humidifier.
 
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Old 12-18-16, 03:46 PM
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You can't measure voltage on one lead or wire.
Voltage must be measured between two points even if one point is ground.
 
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Old 12-18-16, 05:00 PM
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Thanks, I tried two terminals from the solenoid to board but it was tight to reach in there. I will try again. I thought it was just touching one which I never saw before. There are very long leads from the solenoid to the board. I was going to cut them and check power on one side and then ohms on the solenoid. Reconnect with wire nuts and let u know the readings. Thanks for answering so quickly. It is a two stage Lenox heater, if that matters. Water is getting to solenoid just not opening. 24vac 6watts rated on humidifier .
 
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