F10 error, hybrid water heater indicates condensate or drain issue, may shut down heat pump mode

Safety first: Turn OFF power at the breaker.

Drain system checks (hybrid models):

• Locate the condensate drain outlet and tubing from the heat pump section.
• Inspect the drain pan for standing water. If full, carefully remove water with a wet/dry vacuum or absorbent towels.
• Disconnect the drain hose and flush it with warm water to clear slime, algae, or debris.
• Ensure the drain hose slopes continuously downward to the drain point with no sags.

If a condensate pump is used:

• Verify the pump has power and the float switch moves freely.
• Clean the pump reservoir and check the discharge line for blockages.
• Replace the condensate pump if it does not run when the float is lifted.

After clearing:

• Reconnect the drain, restore power, and run the unit. Confirm that condensate flows freely.