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can you post a pic of the sensor switch wires are broken off of?
first..is the wire from R in air handler the one that runs to the broken water switch?
I understand...but do one of the black wires attach to the R wire?
in this pic
the red and white by themselves...do they go to the water switch?..and if so you can put the red from the large cable direct to R
so unhook the red and white by themselves.
attach red from main cable direct to R terminal. This bypasses the water switch
the red wire at your middle finger....attach that red wire to R teminal where the other red is...you can remove the existing red...and replace it with the red currently attached to white.