Error code

A.O. Smith heat pump water heater error code 009

Snap a photo — see what it is, how urgent, who to call.

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Is 009 on a A.O. Smith heat pump water heater an emergency?

Treat it as urgent — deal with it today. If it smells like burning, sparks, or trips the breaker, switch it off at the breaker and leave it off until it is checked.

Take the photo. We’ll tell you what it is.

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What 009 means

“Power supply voltage is too low or too high”

— A.O. Smith, A.O. Smith Hybrid Electric Heat Pump Water Heater Service Handbook. Codes vary by model: check your heat pump water heater’s own manual.

Where 009 fits

In plain words, 009 is about the power supply or wiring — voltage out of range, a blown fuse, or a wiring fault.

Next to 009 in A.O. Smith’s table: 006 (Internal Processor Error) and 021 (Upper element circuit failure).

What to try first

  • Have an electrician check the supply voltage and connections.

Safety: If it smells like burning, sparks, or trips the breaker, switch it off at the breaker and leave it off until it is checked.

How urgent is it?

At least TODAY. fixRAgent treats this code as needing attention today. It points at water where it should not be, overheating, a combustion or ignition safety shutdown, food that may be warming, or a wiring problem. This is fixRAgent’s reading, not the manufacturer’s. A photo can raise it — water near wiring, scorch marks, a gas smell — but a code never lowers what the photo shows.

Who to call

Electrician. Have the model and serial numbers from the label ready — a photo of the label works.

Recalls and manuals

Check whether your model is under a safety recall on the U.S. Consumer Product Safety Commission’s site: cpsc.gov/Recalls. Your owner’s manual is on A.O. Smith’s support site; search it with the model number from the label.