MountainAir05 wrote:
After reading the manual, you are correct on your troubleshooting. Now have you remove the valve and looked at the o-ring. While the valve is out cover the pump and valve assemble and flush out the whole system and put in new fluid. I flush my whole system every few years just to keep the junk flush out.
NEVER remove a HWH solenoid valve unless you have replacement o rings(there are several on each solenoid). When removing a HWH solenoid valve you will make a small nick in some of the O rings that will then leak. Where do you think you will get "junk" on a HWH slide or jack system? There are no moving metal parts on a HWH system. I have over 35 years of working on HWH systems and NEVER have I had any "junk" in a system or junk that caused a problem. doug