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What steps should I consider if my Ruud Ultra Plug-in Heat Pump with HydroBoost (120V Shared Circuit) presents Alarm Code T300?

CAUTION: For your safety, always handle electrical components with care to prevent potential hazards.

Possible Cause: The Water Leak Sensor appears to be not installed. What To Do:

  1. Confirm and ensure that the water leak sensor is indeed installed.
  2. Inspect the wiring connections leading from the sensor to the board.
  3. Measure the resistance of the sensor. Refer to the ohm reading chart to determine the correct readings, which will help decide whether the sensor or the board requires replacement.

This answer is applicable for the following model: Ruud Ultra Plug-in Heat Pump with HydroBoost (120V Shared Circuit).

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