Water heater will not fill all the way
After de-winterizing we can't get the water heater to fill up with more than a very small amount of water. We've tried releasing the pressure from the valve, and have made sure the bypass valve has been turned to the use position.
When the bypass valve is turned to the on position, a little bit of water goes in and you can hear the pump working, but it turns off shortly after and only a small amount goes in and then it shuts off.
2021 Keystone Springdale 220 BHWE
Thanks in advance!