IC40 Flow Light is Red

I cleaned my cell a few days ago and upon restarting the cell, the red flow light came on and the salt lights were flashing. I did a few tests to ensure I had good flow. I do. If shorting the red and black wires does not produce a green flow light, what would the next step be? I replaced the flow switch with a new one and there was still a red flow light and red and green flashing lights. In addition to this, when I stripped the red and black wires FROM the cell, they appeared darkened, the actual wire, but there was no obvious damage to the insulation on the outside of the wires?
 
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