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Do you have the model on the heater?And a meter for troubleshooting?
Are you getting an error code on status lights?
Tripping a circuit breaker?
Try disconnecting the exhaust fan wiring and see if it still trips.
Let me see if I can find a diagram
If you see a wiring diagram on unit you can send me a pic of would help
Think I found it.Disconnect wires to motor
You can unplug at motor or where they leave board
OK the motor is most likely shorted internally and will need to be replaced.
Let me see what I can find
Turn off until you get fixed
Issue probably due to the exhaust motor not venting properly.I am not finding a online suce, but you can try http://www.hotwater.com/parts/ or call around to local plumbing suppliers and give them model on the heater.
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