Icing issues

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jimstl99:
Calling on your expertise to help me figure out the icing issues. This is after running about 12 hours. Thermostat is barely on. Temps inside machine aroun 37f-38f. Machine in garage, ambient temp ~ 70f. Compressor cycles on every 3-4  minutes and runs a minute or two.



Many thanks.
Jim

johnieG:
Looks to be a possible case of an overcharged system or a restriction in the accumulator, the rest of the evaporator is frost-free, so the freon starts evaporating just beyond the last row of coils suggesting a flooded evaporator  , can you check the evap - low side pressure at that system tap I see in the picture, should be sbout 15-20 psii for R12

jimstl99:
Thanks JohnieG.

I wish I had a set of guages to hook up and check pressures, but sadly I don't. Maybe I can find a cheap set at Harbor Freight nearby. The picture might be somewhat misleading as the coils would ice over if left running.

Jim

FlaJunkie:
I'm not a soda machine compressor expert, but most AC systems freeze up when they are LOW on freon.

MoonDawg:
Quote from: jimstl99 on September 25, 2020, 07:35:06 am


 the coils would ice over if left running.



Is the fan behind the evaporator working?

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