I'm getting no cold water. Hot only.
Answer Hello Bill,
The water valve assembly 22003834 is the most likely suspect.
Maytag neptune washer water will not fill code ND. New hoses and screen cleaned.
The ND error code represents that there was a no drain issue. You will want to check the drain pump to make sure that it is not clogged. Check the pressure hose to make sure that it is not clogged. Check to make sure that the units drain impeller is good and that the drain pump is working.
No hot water, good flow, clean screen. When I unplug the water valves and criss cross them, I do get hot when I push the cold selection proving that the valve works.
Am I right in assuming it's the control board?
Answer Bob, Yes, you've confirmed the hot water solenoid is in tact and operates. Assuming the control board is at fault is a good guess, but, you may want to check and verify, that the orange wire from the hot water solenoid to the P7 pin 1 connector on the control board isn't broken, damaged or loose first.