Thor Forums

[Yvonnemarc]

This all depends on your setup: On my ACE water pump there is a low point drain on either side of the pump. The water seems to be backfeeding through the pump into the tank. If you have these 2 low point drains you can open the low point drain at the inlet of the pump. This would give you a flowpath from the city water to the pump outlet, back through the pump and out the inlet low point drain. If water flows out through the pump inlet low point drain this would indicate the pump internal check valve has failed. Now I also have an isolation valve that comes from the tank just before the pump. It is so you can use the bypass line to winterize the coach using the pump and not get antifreeze in the fresh water tank. Shut the low point drain you opened and close this valve...it's located before the pump strainer. This will prevent backfeeding into the fresh water tank if your pump check valve has failed. If you have this bypass line make sure the plug in the end of the bypass line is tight.