server room troubles

[david chamberla]

have a mitsubishi muya24na that when it ramps it at 70# gradualy goes to 140 sh 20 hp allway stays at 290 sc 5 amps on start up 6.7 goes as high as 7.5 out side temp 75 indoor 80 .when i first got there it was runing low .pulled disconect which then started the above .this has r410a this unit has inverter and electronic txv

[HvAckid82]

youre saying 140 degrees super heat?
290 degrees sub cooling?
20 horse power?

[socotech]

youre saying 140 degrees super heat?
290 degrees sub cooling?
20 horse power?

I agree kid. That is about as clear as mud.

[Tassajara]

I think he is saying sh is 20. High pressure is 290

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[HvAckid82]

If he does have those readings I want to see it! What's is the highest subcooling youve ever seen? Not trying to hijack the thread.

[joemach]

have a mitsubishi muya24na that when it ramps it at 70# gradualy goes to 140 sh 20 hp allway stays at 290 sc 5 amps on start up 6.7 goes as high as 7.5 out side temp 75 indoor 80 .when i first got there it was runing low .pulled disconect which then started the above .this has r410a this unit has inverter and electronic txv

If you have any question on charge on a ductless, pull the charge and weigh it back in. You can not diagnose a mini-split like you can a conventional system. They are not the same and do not work the same.

[david chamberla]

youre saying 140 degrees super heat?
290 degrees sub cooling?
20 horse power?

wow suction psi starts at 70 pounds than goes to140 after it ramps up supper heat 20 deg .head psi stays at 290 psi subcool 5 .is clear as mud iam old school like to abrevate spelling allways funny but work gets done . having fun yet. allways i was actually wondering if any teck has had problems with inverter or comps . would this cause those readings 'i waighed in r410 .

[Newtech72]

I agree. The only way to know for sure if it is charged correctly is to remove the charge and weigh it.

[david chamberla]

thank you invertor was speeding up to compensate for refrigerant waighed out charge was short waighed back in .got up and running ,went back to leack search found leak in evaperator ,its on the way only 3 y old .

[joemach]

thank you invertor was speeding up to compensate for refrigerant waighed out charge was short waighed back in .got up and running ,went back to leack search found leak in evaperator ,its on the way only 3 y old .

Glad to see you got it figured out.

Good job!