Strange Oasis mal function
About a month ago our summer loop pump went out (Rudy confirmed) replaced pump and had hot water for showers for two weeks. Now no hot water again. Diesel and elec both working fine. Here is the odd thing, the summer loop pump howls like a coyote. Noise is so loud coming through the bathroom vent that we can't sleep. Have never heard of no hot water with both diesel and elec working. Prior to not working at all we had four times where hot water would work then a day or two later would quit again. Now it seems with the howling it is out for good. Thanks in advance for any help.