Help identifying missing component.


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Old 10-08-21, 02:52 PM
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Help identifying missing component.

My wife and I purchased this older mobile home. The ac was not functioning when we bought it. Purchased a few window units to keep us cool in mean time. I'm not getting power to the thermostat(new battery operated wasn't one when we moved in) or terminal board.. Getting 240v power in and 240 at the contact switch to outside fan and condenser. Manually pressed in plunger the fan and compressor turn on. Upon inspection I noticed what looks like a missing component and one of the wires had electrical tape loosely wrapped around I'm guessing to prevent short. Anyway I attached a picture in hopes someone could help me out. Thanks in advance! Also from 1994 mobile home I'm assuming same for ac unit.




What looks to be missing component. Two unattached wires.
 

Last edited by PJmax; 10-08-21 at 08:30 PM. Reason: labeled top pic
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Old 10-08-21, 04:15 PM
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Provide the brand and model number.
 
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Old 10-08-21, 08:34 PM
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That's a Miller/Nordyne electric furnace/air handler.
The three sets of white letters A, B and C are each a heating element.
The 6264040 is a two pole 145f limit switch. It opens the A and B elements on an overheat.
The missing part would be a single pole 145f limit switch. Opens only the C element on overheat.
The one in the link is resetable upon tripping. limit switch

The heating parts wont affect the A/C operation. I also labeled your 24v transformer. That would keep the system from operating and cause the stat to be dead. It looks to be missing wires. It should have two 240vAC wires in and two 24vAC wires out.
 
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Old 10-16-21, 11:17 AM
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Thanks for the help! Also found some wires that the insulation came off short out. Gotta run some new wire I'll keep yall posted on my progress.
 
 

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