GA90 vsd 1998 displaying error 7301 sys failure - what does it mean

my ga90 vsd 1998 displaying error 7301 sys failure what does it mean &how to solve


Ga 90 vsd make year 1998 every thing OK we did overall service

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Aug 21, 2016
Display error 7301 system failure
by: Remzi Ibrahimi

I have Display error 7301 system failure, we install new driver on compressor, but every time when we try to start the display show that message;Display error 7301 system failure.
Please if anyone can tell us what it mean and how we can fix it?? please.

Feb 29, 2016
Display error 7301 system failure
by: Edin from BiH

Plese can U tell mi how did u solve this problem , becouse Im having the same failure shown on my compressor to . Thank U

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GA90FF running hot in unload state

by TW
(Sterling Heights, MI)

GA90FF running hot, 210 deg. While in unload state

Replaced thermostat, any ideas?

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Dec 02, 2015
Noisy?
by: Carl

Is the compressor unusually noisy? Possibly the air-end bearings on their way out?

Try removing the belts and turning the pulley by hand, listen carefully to the noise coming from the bearings and especially try and feel if there is any tight spots when you turn it.

It will be harder to turn than a motor so it won't "free-wheel" but if everything else seems ok then you need to look deeper

Dec 01, 2015
GA90FF hi temp when in-loaded
by: Tom

The temp. rises gradually when un-loaded.

The thermostat is new, oil, oil filter, and oil separator have less than 300 hrs.

The load/un-loader valve assembly function properly.

The bypass valve located within the oil filter canister appears fine.

The "minimum pressure valve" on top of the separator tank operates fine, hoses to the element from the separator are clear.

Nov 28, 2015
Thermister?
by: Carl

That is a very strange fault!

Ok, have a close look at the temperature reading when running, does the temperature "dance"?

Or does it climb and lower slowly?

When i say dance, i mean does it erratically go up and down? If so then it could be the thermister (temperature sensor) otherwise Doug may be right, something is restricting the oil from flowing around the system freely.

When was the oil and oil filter last replaced for example?

You could also take each oil pipe off and make sure they are clear of restriction. Make sure there isn't anything at the bottom of the oil tank blocking oil flow.

Sounds silly but just last week I was called out to an Atlas Copco, overheating fault, and found that the bottom end cap of the separator element had come unstuck and dropped to the bottom of the tank, blocking the oil from going up to the oil filter. Took a while to find though!

Carl

Nov 23, 2015
GA90FF
by: TW

To support Doug's information, I did recently have an issue with the load/unload valve sticking. I referenced that issue as air flow related, now it makes sense.

Nov 23, 2015
GA90FF
by: Tom W

Thanks Doug,
Yes, when it runs loaded the element outlet temp. is normal.

Nov 23, 2015
running hot unloaded
by: Doug in s.d.ca

Those degrees are Fahrenheit, I trust.

Does it go normal when loaded?

Could be the unloader is gunked up and closing completely, so not enough oil flows on the screws.


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Ga 90 FF getting high temp element alarm

by Shashi
(Indonesia)

Getting high temp element. alarm what is cause.

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