What actions should I undertake if my Ruud Ultra Plug-in Heat Pump with HydroBoost (120V Shared Circuit) indicates Alarm Code A200?
CAUTION: For your safety, always disconnect power before working with electrical components to avoid potential hazards.
Possible Cause: The ECO (Energy Cut Off) has tripped, resulting in the heater being disabled. What To Do:
- Disconnect the power supply to the unit.
- Examine the elements from screw to ground for any irregularities.
- Measure the resistance of the thermistors.
- If the issue isn’t associated with either the elements or the thermistor, it’s advisable to replace the board.
This answer is applicable for the following model: Ruud Ultra Plug-in Heat Pump with HydroBoost (120V Shared Circuit).