What should I do if my Whirlpool Hybrid Electric Heat Pump Water Heater provides insufficient hot water or has slow hot water recovery?

CAUTION: Before attempting any corrective actions, ensure the power to the water heater is turned off at the circuit breaker/fuse box to ensure your safety.

Possible Cause: Temperature set-point is too low. What To Do: Increase the set-point temperature. Refer to the “Adjusting the User Interface Module” section in the manual for guidance.

Possible Cause: Air filter is dirty. What To Do: Clean the air filter.

Possible Cause: Hot water usage pattern exceeds the capability of the water heater in its current mode. What To Do: Change to a different mode or modify your hot water usage patterns. For example, if in Efficiency Mode, switch to Hybrid Mode.

Possible Cause: Water connections to the unit are reversed. What To Do: Ensure the cold connection is at the bottom and that the hot connection is at the top.

Possible Cause: Heat is being lost through a long run of exposed pipe. What To Do: Insulate any exposed piping.

Possible Cause: There’s a hot water leak at a faucet or in the piping. What To Do: Repair any hot water leaks.

Possible Cause: The heating element is not functioning. What To Do: Contact a qualified technician for service.

Possible Cause: There’s sediment or scale build-up in the tank. What To Do: Drain and flush the tank. Consider water conditioning to minimize build-up.