This morning I found that the Hartell condensate pump (KT-15-1UL) attached to the furnace/AC was running continuously. I removed it and tested it in the sink. The problem is that the pump goes on when the float is down, and when I push the float up, it stops -- the exact opposite of how I think it's supposed to work. Any solution, or just replace it? It must be at leas 10 years old. Thx.