Heat pump Low Pressure Switch Replacement

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Old 12-10-18, 05:10 PM
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Heat pump Low Pressure Switch Replacement

Model # CH5524VKA2
Serial # L934683867
Installed 1993

My low pressure switch threads on and has about a 1/8" projection inside, would that necessarily mean that it's a schrader valve connection? If so, is there any way to be sure that there really is a valve before I disconnect the switch? Or, as I disconnect it? In other words, if there is no valve, would the refrigerant come out much more forcefully than if a valve is in there? If I take the switch off and realize there is no valve, will I be able to just screw the new switch on without losing too much refrigerant? I hope that's clear! Thanks
 

Last edited by gcrawdad; 12-10-18 at 06:11 PM.
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Old 12-10-18, 06:42 PM
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ICP heat pump system

That's a hard question to answer. It's not always clear if there is a Schrader valve in place. If there isn't and you remove the switch...... you'll lose a lot of the charge as it comes out quickly.
 
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Old 12-10-18, 06:46 PM
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Yes, figured that. Just hoping that a pro might have a trick to determine that. Anyway, it's likely in there but if I'm not feeling lucky, I just read elsewhere that I could install it to low side service port.
 
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Old 12-10-18, 06:56 PM
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By the way, if I can ask here, I tried posting an image of the sensor using different sites but couldn't. When I clicked "save" the hosting website name was replaced with asterisks. Any idea why? I've never had a problem elsewhere. Thanks!
 
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