CAT 320E intermittent electrical on AC/C

Tony Wells · 2020-05-15T00:41:07.000Z

Greetings Friends of the Forum! Hope you are all staying Covid-19 safe, families and all! Got a little problem on a machine that is one of those "now you see it, now you don't" types. It also has a couple of features that I find no logical connection between. This machine has a nice digital display, with a rear-view camera. Sometimes , when the A/C is powered up, by the power button on the A/C control panel, the display blanks out. It's seemingly random. The dealer spent two days with no success, nor any recommendation. So it's back in our hands. First order of business, after an extensive physical examination of the wiring, fuses, etc., I need a schematic, of at least the A/C block, and one of the control console if it is a separate section. It would first strike me as a poor connection or a bad ground, since the operators say it happens more when they are on rougher, firmer terrain. Also, oddly enough, when the A/C is running, though it is charged sufficiently and the compressor is definitely engaged and running, there is no cold air. There is until the "blackout". The A/C control console also blanks out. Before it does, however, all the display icons are there, and show modes correctly. If anyone could share some schematics, I'd be grateful. Thanks Pertinent information:

Started by Tony WellsMay 15, 202022 replies

NigeLegendSep 10, 2026#21
I think you need to visit Specsavers. The guy with the relay problem first posted on this thread earlier today.
ChrisMaferaJunior MemberSep 10, 2026#22
Nige said: I think you need to visit Specsavers. The guy with the relay problem first posted on this thread earlier today. Click to expand... It’s ok I’m wrapping up my day, I’ll be here tomorrow though you can bully me around some more then, have a good night!
DOUAHCHIANew MemberSep 10, 2026#23
Thank you very much for your help and guidance! I really appreciate your time and assistance with this issue. Have a great day!

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