Compressor overload opening after 20 minutes?

[dukes13]

Am. Std. CU- M# TTA120A400BC S# N3146DHAH
A/H M# TWE120A300CA S# N27105E5H
Compressor overload opening after 20 minutes of operation; ambient 85º
Suc.- 63 psi @39 SAT
line temp 69º SH 30º
Liq.- 212 psi @ 106º SAT
Line temp 96º SC 10º
Sup 65º Ret 78º WB 69º

[bluke1]

What is the amp draw? The overload will open if the current is to high. It could be any of the electrical components, or wiring, that are causing your problem.

Edit: I re-read the rules, and might not be allowed to post, but the question was asked by an authorized Pro, and my advise was vague...??? Delete if I'm breaking the rules.

[ar_hvac_man]

Yea you need to check your amp draw. Your pressures are temps are fair. Possibly run capacitor. If unit has a start capacitor that will get it running but if the run is bad it will be over amping and getting hot.

[jpsmith1cm]

moved to tech to tech commercial

[atmosphere]

How is the oil doing?

[coolairman]

Check the contactor, if the contacts are bad you can get a current imbalance between phases in the compressor motor-causing overheating.
Coolairman

[Capt Freeze]

Seems like you're low on charge or have a restriction. SH of 30 is a little high. With those readings, your target SH should be about 19 degrees. SH too high will make the compressor run hot. Also check your temp split across your liquid drier to make sure there's no restriction. If it has a txv see what happens if you bring your SC up to 15

[gravity]

I agree with him ^^^

High superheat will cause an overload. That unit is most likely a TXV. See if you can check pressure drop across the drier. Trane uses a small drier which will clog up.

[indy2000]

Am. Std. CU- M# TTA120A400BC S# N3146DHAH
A/H M# TWE120A300CA S# N27105E5H
Compressor overload opening after 20 minutes of operation; ambient 85º
Suc.- 63 psi @39 SAT
line temp 69º SH 30º
Liq.- 212 psi @ 106º SAT
Line temp 96º SC 10º
Sup 65º Ret 78º WB 69º

Is the return gas temp at compressor 69deg F?

[dukes13]

It was a TXV restriction, tkx for replys.

[toocoolforschool]

txv and tkx's im so confused.
Glad it worked out.