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What should I do if my Ruud Ultra Plug-in Heat Pump with HydroBoost (120V Shared Circuit) has not enough or no hot water?

CAUTION: For your safety, always consult the manual or a professional before attempting any fixes.

Possible Cause: Water usage may have exceeded the capacity of the water heater.
What To Do: Wait for the water heater to recover after an abnormal demand.

Possible Cause: A fuse is blown or a circuit breaker tripped.
What To Do: Replace the fuse or reset the circuit breaker.

Possible Cause: Electric supply may be off
What To Do:Confirm electric supply to water heater and see installation section of this manual.

Possible Cause: The thermostat may be set too low.
What To Do: See the Temperature regulation of the water heater section of this manual

Possible Cause: Leaking or open hot water faucets
What To Do: Make sure all faucets are closed

Possible Cause: Electric service to your home may be interrupted
What To Do: Contact the local electric utility.

Possible Cause: Improper wiring.
What To Do: See the Installing the water heater section of this manual.

Possible Cause: Manual reset limit (ECO)
What To Do: See the Temperature regulation of the water heater

Possible Cause: Cold water inlet temperature may be colder during the winter months
What To Do: This is normal. The colder inlet water takes longer to heat.

Possible Cause: Not enough air exchange for Efficient Heat Pump Operation.
What To Do: If air temperature drops more than 15°F (8°C) during Heat Pump Operation, more air circulation around heater is needed.

If the problem persists, please call our customer service at 1-800-432-8373.


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