Water Heaters - Solar water heater pump
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diyalwannabe
10-27-06, 11:33 AM
The circulation pump (a Grundfoss) appears to be not working. When I turn the switch on (that the pump is plugged into) the switch lights up and the pump vibrates (hums). But I don't hear the same "noise" that I heard when it worked. The pump was installed new a few years ago. The problem may be that the pump has not run for about 10 months -- could it be frozen from not using it? Is there someway to check the pump and/or unfreeze it? Thanks