Our arctic air freezer blinks "csd" alarm code.

Call for service. Try cleaning condenser fins of accumulated dust.

It may need refrigerant gas.

This can be caused by: - warm, fresh food being placed in the freezer, - too much warm air from the outside entering when re-arranging or removing frozen food, - a fault in the appliance. The temperature display will continue to flash until the cause of the alarm has been rectified.

Use and Care Manual - Liebherr

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Question edited for a lot more clarity!

https://www.google.com/search?q=af23+freezer+condenser+motor+replacement

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You need Service. Sounds like it need gas.
CSd Condenser alarm All outputs off

HA Maximum temperature alarm Outputs unchanged
LA Minimum temperature alarm Outputs unchanged

E4 error code on a Defy Refrigerator is a indication that there is something wrong with the air movement inside the freezer compartment.

REASON for code
The freezer has made too much ice and is now all frozen-up or
it could be that freezer system is low on refrigerant (gas)

Possible Causes
1. The freezer door wasn't closed properly - just closed enough to switch off "door open" alarm and open enough to let moisture in - resulting in over condensation on condenser.
2. Abnormal high open and closing of freezer door.
4. Defrosting Element not heating - therefore not melting the ice - buildup
5. Pc control panel has gone on the blink
6. Refrigerant tubs has rusted causing a gas leak.

I hope this has helped you to make a more informed decision about your next step.

motor humming is from 2 things
start / run capacitor is failed
compressor is seized and the motor is not turning
call in an technician for a proper diagnosis and quote

http://www.arcticairco.com/docs/reach-in-owners-manual.pdf PAGE NO. 9

Maximum temperature alarm, Outputs unchanged. I think your board needs to be reseted, but dont do it by your self, look for help.

Regards,

Some freezers don't operate with coils. If you search for that on google you might be able to find the parts manual. Your other option, assuming it is broken, is to find a replacement. http://www.refrigerationice.com/Services.html

The condensor is usually located under the fridge. You should be able to remove the grill in the front to get to it.

sounds like the condenser is shot or there is no air circulation to the coils

try replacing the seal around the door