Error code

A.O. Smith heat pump water heater error code 006

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

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Is 006 on a A.O. Smith heat pump water heater an emergency?

Usually not an emergency. 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 006 means

“Internal Processor Error”

— 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 006 fits

In plain words, 006 is about the electronic control or its keypad — a board, a connection between boards, or a stuck key.

Next to 006 in A.O. Smith’s table: 004 (Lower thermistor sensor failure) and 009 (Power supply voltage is too low or too high).

What to try first

  • Turn off power at the breaker, then back on; if it returns, call a qualified technician.

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 THIS WEEK. fixRAgent treats this code as a this-week repair: the appliance has reported a fault, but the code alone does not point at a safety hazard. 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

Plumber. 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.