Heat Pumps: Approach, Temperature Rise and Proper Winter Charging

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In this video I learn from my mistakes and demonstrate how an undercharged AND overcharged heat pump can demonstrate similar symptoms.
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Damn good tip.3 decades and now i come across this issue

armandorodriguez
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Great tip on the probe placement.

I'm a second year tech in Washington State, looking to get some good tips on heat pump maintenance and troubleshooting.

harmfulOpnions
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I bet if you go back in the summer it will show that it is under performing again. I would suspect poor ductwork causing the problem. Thanks for sharing I did learn about winter approach

numbnut
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It’s so funny that you have the job link probes, but you still use the old manifold 😂

hvac-r
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You made this video Jan of 2022, but do you remember if the compressor was a single stage, two stage, or an inverter? I am currently starting up a 24, 000 btu comfort aire inverter heat pump. Vacuum below 500 microns broke the vacuum with about 4 oz of R410A, and have not added any additional refregerant. Just been running it and watching the numbers.. My approuch is 11 degrees..The seven segment display on the HP circuit board in charge mode shows high subcooling 56 degrees it calls for 36 degrees in heat mode. All the other numbers look ok. Furnace blower on high. There seems to be alot of control going on with a inverter heat pump. The delta T accross the indoor coil 16 to 20 degrees.

maylockin
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How many line clamps do it take to complete this procedure?

StraightupheatingandCoolingLLC
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Would all of this hold true (like the approach temperature) on a package unit?

interwoven
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I have a 2 ton heat pump and everything seems to be working fine but the liquid line temp is about 30 degrees warmer than the return air instead of the 3-17 degrees. Does this mean there is an issue

qnzkrew
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yes when one chargers an unit ..don't rush as I seem to do to many times ... but Charge her Slow or you be Backing it out in recovery in 20 30 mins & all that waist goes to recycle not uR wallet don't waist Hi dollar Juice & we can not leave an 1- 3 * Super-heat its happens .

heatingairservices
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In my experience, the only way to get to charge right in a heat pump is to weigh it in.

thesearcherman
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