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Troubleshooting HSC-60/70 Error Codes

The HSC-60 & HSC-70 are 5 ton and 7 ton portable AC units.

These units deliver high efficiency cooling to industrial sites, repair shops, server rooms, outdoor venues and more. On occasion these units indicate a E2, AF, or FU error code.

Learn More About E2, AF, FU Error Codes

Watch the video below for a brief explanation on these error codes:

Transcript:

Sometimes on occasion you will have to call us depending on certain error codes.

If you are getting an E2 error code, that could end up being a low-pressure thing. That water could either be low on refrigerant or the room is already too cold as it is and you’re trying to obtain too low of a temperature – that can also trip it off on E2. Also you put any kind of restriction on an evaporative coil you can get an E2 error code as well.

You can also get E2 if you put ductwork onto the nozzles. Now these are designed as being spot coolers and they sit in the room as they are and blow the air out of the nozzles, but some customers request the ability to be able to duct them. We try not to go past 15 feet of duct on each nozzle, so you don’t slow down air flow too much and cause the unit to freeze.

So you could also get an AF error code, which is an antifreeze, in which it will shut off intermittently. But we try to limit if you need to put ductwork on there – try to limit the length of ductwork.

Another common error code that you can get on the unit is a FU error code. Sometimes, pumps may get overfilled. What usually tends to happen is if wherever you have your condensation line run, it may be pinched off somewhere – maybe you have it run under a doorway. Make sure that it’s not pinched off because basically it’ll back flow the pump and shut down the pump and it will shut down the unit, as well as the safety.

Make sure your filters are clean. You can go blow them out with an air compressor or hose them out, they’re friendly in that way and you can just put it back in.

Check out our temporary air conditioning page to learn more about our units.

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