HVAC Thermal Expansion Valves
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Uploader Comments (DrZarkloff)
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this guy is an idiot
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The refrigerant is actually stored in the sensing bulb and travels down the tube to the diaphragm. Also, not all bulbs contain a different refrigerant than the refrigerant used in the system; it depends on the application.
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... okay. But in that "powerhead" is a diaphragm.
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@1theborder Most likely the power head lost partially its charge, then someone put on a low side gauge and found the super heat high and the suction low, so they added refrigerant causing the head pressure to rise and maybe even for the unit to work for a while in the new condition, but then the powerhead fully lost it charge and shut down, all refrigerant pumped into the condense and head pressure went through the roof.
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@DrZarkloff a question what is the sintom when the txv is bad?
because i just replace one but the presure in low side is very low and the high very high and kill the compressor
can you please tell me the sintoms
i think is look like restriction right
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Isn't the "powerhead", called a diaphram.
Charles2337 1 month ago
@Charles2337 Actually, the power head is called a power head.
DrZarkloff 1 month ago 2
@Charles2337 Actually, the powerhead is filled with a refrigerant that is different than the refrigerant that's in the air conditioning system.
DrZarkloff 4 weeks ago
Do they sell rebuild kits for the txvs, or if it's the same unit can you just replace the internal parts and bulb from the body saving the brazing. Haven't had any experience with txv's as all my units are fixed orifice.
150grnballistictip 6 months ago
@150grnballistictip You can buy the power head separately but you need to buy the entire expansion valve to get the inner parts.
DrZarkloff 6 months ago
How do you replace a reversing valve solenoid coil on a reversing valve?
henryvideos100 6 months ago
@henryvideos100 The solenoid coil usually is just bolted on or clamped. Just remove the old coil and replace it with a replacement coil with the same coll voltage.
DrZarkloff 6 months ago