high suction pressure

[david ashley]

ive been working on a goodman a/c thats about 6 yrs old suction pressure is 200 head pressure is 200. did a amp check on the compressor it 23. rla is 12.1 . the amps seemed high is this normal? evaporator is a little dirty but not bad. inside fan is blowing good. thanks for any info

[Magoo]

It would appear that the compressor has stalled and drawing lock rotor amps.

[nike123]

It would appear that the compressor has stalled and drawing lock rotor amps.

I would expect lock rotor amps to be 5-7 times of full load amps (rla).

[nike123]

ive been working on a goodman a/c thats about 6 yrs old suction pressure is 200 head pressure is 200. did a amp check on the compressor it 23. rla is 12.1 . the amps seemed high is this normal? evaporator is a little dirty but not bad. inside fan is blowing good. thanks for any info

Is that heat pump or only cooling A/C?

[david ashley]

no, this is not a heat pump.

[Saturated]

Let me get this straight. The compressor is running and the suction and head pressure are the same? If this were a hermetic with this problem, I would say that the discharge line inside the compressor has broken and the refrigerant is recirculating inside it. If this is the case, suction line entering will be warmer than expected and discharge line leaving will be cooler than expected.

[Sridhar1312]

Suction Pressure and discharge pressure both are 200 PSI seems that the system might have been recently topped up with refrigerant and it appears overcharged as both suction and discharge are same.
Please remove refrigerant till suction is around 60 to 70 PSI for R-22 and check.

[amitsaxena]

There are following possibilities
1. Relay is functioning wrong

2. The run and start winding getting short, check for Resistance of both
3.the discharge line inside the compressor has broken and the refrigerant is recirculating inside it and for verification you can check the discharge will be colder than compressor dome temperature.

4.You can also check for noise (abnormal) from the compressor.

Thanks
Amit Saxena

[acnerd]

It would appear that the compressor has stalled and drawing lock rotor amps.

Should be (not always) a contactor overload to prevent sustained high current draw. Or the MCB or fuses supplying the unit may be way over the required rating. This should be checked too otherwise serious compressor damage or even fire could be caused.

[lowcool]

ill go a carton that the start capacitor is open circuit,dont reckon locked rotor amps are high enough,and op has hearing problems,broken pipe would be under amp i reckon saturated.
cheers fellas

[Yuri B.]

Of course with broken compressor valve(s) current drawn is much less than the rated one.

[Gary]

Are we assuming the compressor is a recip? Maybe it is a scroll.

[thebigcheese]

what are the standing pressures and what happens to these when the comp gets power?


can you pump test the comp?

[david ashley]

thank you all for the help

[Magoo]

Low Cool.
You are a cool guy, 99% of posts would not even remotely understand your post. But I do and your on the button.,

[lowcool]

what you been on magoo?
less time speakin,more time for drinkin!
did have a chuckle over garys post didnt think of that one,i might see a goodman compressor one day

[Shibhrac]

There are only 2 cases which we could get the said pressure's reading. It's ether compressor's valves are broken or a broken discharge line inside the compress's dome. which mean the compressor is pumping the refrigerant to the suction line directly ,this case will increases the drawn amps where the broken valve decreases the drawn amps