Pool and Spa
Questions about Pool Repair? Ask an Expert Online.
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I am concerned about you refer to as a conversion plug.
Please tell me which part number it is HERE
First a poor/bad ground contributes.
Also deviating power input. Usually low power..Example is if lights dim at start up or when heater activates.
do you have 2 hots, a neutral and ground to unit or just 2 hots and a ground?
with a volt meter can you measure neutral to ground....looking for ground issues..
report the following:
Hot to Hot volts
Each hot to ground volts
Neutral to ground volts
hot to neutral volts (see if match hot to ground)
Wait until you have this info to respond