Couple days ago, dry camping, and turned on pump. Heard usual pump motor noise -- but this time it was accompanied by a scratchy-buzzing sound?
(After reading on other threads this forum of water damage when pumps left on if a line breaks, etc - we no longer leave the water pump turned on. Instead, we turn on / off as needed for each water use. )
We tracked down what we think is the source of scratchy noise - seems to be coming from Hot Water Heater tank 'relay switch'? Looked up in our WBG manual, (black cover box about 4" square, located on rear of W/H, as seen from inside coach, under rear lavatory in our 2013 Journey 36M).
We have a 10 gal Elect / LP Atwood Water Heater in this coach.
First, what does the relay switch do? Was surprised that even though no LP or Elect turned on at W/H control on 'One Place' panel, no hot water demand at faucet ...why there would be anything to do with water heater -- since only switch we turned on was 'water pump ON.'
Second, more important I guess ... what to do to fix / resolve this noise?
Thanks for any help /advice in advance.
Safe Travels to All