davewill
Active Member
It's reading the right voltage, which means it used the control pilot (the same pin that signals the amperage) to signal the UMC to turn on the AC pins and the 14-50 isn't delivering the wrong voltage. I suppose a bad ground could cause weird symptoms like this, but the UMC should detect a bad ground and show red lights.
It's not really that hard to get the 14-50 right, and you had the electrician back to check it. I suppose you could have someone else double check it. You should have 240v across the two hots and 120v between each hot and the ground. You should also have 120v between each hot and neutral, but neutral isn't used by the UMC and doesn't matter.
You've replaced every item that I would have thought had anything to do with the signaling of AC charging. I suppose it's back to the service center.
It's not really that hard to get the 14-50 right, and you had the electrician back to check it. I suppose you could have someone else double check it. You should have 240v across the two hots and 120v between each hot and the ground. You should also have 120v between each hot and neutral, but neutral isn't used by the UMC and doesn't matter.
You've replaced every item that I would have thought had anything to do with the signaling of AC charging. I suppose it's back to the service center.