The controller is showing an "HA" alarm on my Perlick unit?
it seems to be laughing at me...
I googled that and happened across a Perlick installation & operation manual on a back bar cooler. Its troubleshooting guide says the control flashes "HA" if the internal compartment temperature has exceeded the high temperature alarm preset value for over 30 minutes.
It goes on to offer some causes & their solutions:
If none of these solve your problem, then something has failed and you will need to call a technician for service.
Robert- when encountering this issue the first thing I would look at is see if there is frost on the rear of the unit. 75-80% of the time I see this on the tech support line someone has left the door open for an extended period of time changing the unit from a freezer/cooler to a dehumidifier. The moisture adheres to the evap coil not allowing cold air to enter the box. This causes the compressor to continue running and build on the ice even further. Unplug the unit for 24-36 hrs and let it sit in a location will moisture will not damage the floor (if you have it on a delicate wooden floor). After the defrost period, plug the unit in for 2 hrs and monitor. The other issue I have seen cause this is your refrigerator being set excessively low. I recommend not setting your cooler below 35 degrees. After these adjustments if your unit does not make temp call Perlick tech support at 844-411-8050 with your model and serial. They should help you out.
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