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Thread: Daikin E5 Error and Weird Issue.
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09-06-2018, 02:07 AM #1
Daikin E5 Error and Weird Issue.
Model - RXYMQ48PVJU
I found this unit with a grounded compressor and burned PCB. Replaced both and initiated a testrun followed by a shutdown on code E5. I checked the stopvalves, incoming power, and all connections including compressor wiring for correct orientation. I also checked to make sure the refrigerant was equalized.
Here's what happens:
I have an amp meter clamped on one of the lines. The unit will initiate compressor start and will drive to about 5 amps go up to about 18 amps, ramp back down to about 5 amps, and back up again. This all happens within 5-10 seconds. Unit will initiate a slight delay and start the process over again. Every time the compressor attempts to start, it will visibly shudder.
I don't have an inverter checker, however I used Mode 2 28 to test the phase balance. All measured about 9 V.A.C. (It seems kinda low but Daikin says okay).
I really can't believe a new compressor would be DOA, but I suppose it's possible.
Any ideas or other things to check?