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jlc

Member Since 04 Dec 2012
Offline Last Active Jan 05 2013 12:42 PM
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national 474 combo warm air

08 December 2012 - 12:57 PM

hi, went to fill machine, got there and the soda door was stuck open. warm air was blowing out. i didn't have time to investigate. i unpligged unit for about 5 minutes. plugged back in , i heard compressor turn on then kicked off after.
1) should i check for ice build up
2) fans are working. it was blowing hot air and temp was 78degrees!
3) do i check compressor?
4) maybe temperature sensor board?
i have a few of these crane/national combos. they are pretty reliable. only recall 1 problem with the newer combo was that i had to replace the temperature sensor probe. also had to replace ome micro switch on the soda selection doors.
any help or clues would be great thanks gary