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pump won't stop
I have a suburban water heater in my 320bhs. water system works fine when hot water tank is by passed. after I switch back and fill tank and purge system, I start having my problem. the pump will turn on when I open a faucet and won't stop until I run the hot water side for a good 10 seconds. and when I do air sputters out of the hot faucet. any ideas would be great. thank you.
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