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Brand:ge
Model Number: guv27essm1ww
Main Symptom: no lights on ui board
What happens & when: constant
Error Code (if any): green light blinking constantly on control board
Parts or tests already tried: new control board, washer ui board and temp/options/cycles switches.
Photos / video link:
With the main control access, is there a DC voltage when testing at the connection J602 between the red wire, yellow wire, and the violet wire with a multimeter?
I was going to check that tomorrow. No lights on the ui board after I replaced it, That is why I replaced the control board. Still no lights
This could be a wire failure. If there is a full 120 Volts AC at connection J101, there should be no reason the main control and user interface would not work unless there was a wire failure, a DC short, or a faulty control. Since the user interface and the main control have been replaced and the issue is the same, it is unlikely that the controls are the cause. Testing the wires between the two would be the next step.
9.5 VDC going between V and R 9.5 VDC between V and Y nothing between R and Y going into the UI board.
9.5 VDC going between V and R 9.5 VDC between V and Y
If this was tested at the main control, the next step would be testing at the user interface control. If the voltage does not reach the user interface, the wire harness would be the cause of failure. If the voltage is reaching the user interface, does the system allow for the controls to be placed into a diagnostic service mode (see attached image) and if it does, what personality ID is found in the Personality ID mode and is there a fault code in the Fault Codes mode?
The user interface controls are new. I am going to try another UI board. Is 9.5 VDC the correct voltage?
No lights on the UI, dead.
What is the DC voltage supposed to be?
Is 9.5 VDC the correct voltage?
Unfortunately, the manufacturer does not identify the DC voltage that should be provided from the main control to the user interface control. Was the voltage testing done on the user interface side of the harness, or the main control side of the harness? If it was done on the user interface side of the harness, a voltage reading coming up when testing from the violet wire to the other wires would suggest the harness is good, likely meaning the main control is faulty. However, if the voltage testing was done on the main control side of the harness, turn the power supply off and test the wires directly for continuity after disconnecting one end. If the wires all have continuity, it is likely that the main control is faulty. If a wire does not have continuity, the wire harness would need to be replaced.
The voltage was tested on the user interface side of the harness. Both the new and original board had the same voltages.
Even tried a new lid lock, still no lights on UI board.
