What it means
Daikin's US service manual calls it a fan motor (DC motor) or related abnormality. It is flagged when the fan stays below half its maximum speed, or does not turn for more than 5 seconds after starting.
What to check, in order
- Switch off at the breaker
Turn the unit off and switch off the air conditioner's own circuit breaker for 20 minutes, as Daikin's troubleshooting page describes.
- Look for anything in the air outlet
With the power off, check the air outlet for anything that could stop the fan turning. Don't take the casing apart.
- Restart with the remote
Switch the breaker back on and restart. If the operation lamp flashes again, book an engineer.
When to call an engineer
Daikin's service manual lists a large drop in supply voltage, a broken or shorted fan motor winding, broken motor lead wires and a faulty indoor control board. An engineer checks the connector and whether the fan turns freely, then replaces the motor or the board.
A repair visit will usually check the fan motor, its wiring and anything blocking the blades.
- Note the model and serial number. They're on a label on the side of the indoor unit, and on the outdoor unit.
- Write down the exact code, and what the appliance was doing when it appeared.
- Check whether it's still under warranty. If it is, the repair may cost you nothing.
Quick answers
What does the Daikin A6 error code mean?
The fan inside the indoor unit is not turning at the speed the control board expects, or not turning at all, so the unit has stopped. Daikin's US service manual calls it a fan motor (DC motor) or related abnormality. It is flagged when the fan stays below half its maximum speed, or does not turn for more than 5 seconds after starting.
Can I fix Daikin A6 myself?
Engineer only (engineer visit). Start with: switch off at the breaker; look for anything in the air outlet; restart with the remote. Daikin's service manual lists a large drop in supply voltage, a broken or shorted fan motor winding, broken motor lead wires and a faulty indoor control board. An engineer checks the connector and whether the fan turns freely, then replaces the motor or the board.
Is Daikin A6 worth repairing?
Get a quote first. Usually a new fan motor or indoor control board. Get a quote first.
Checked against
- Daikin Service Manual SiUS042113E, FTXM-V / RXM-V inverter pair wall mounted type (manualslib copy of the Daikin PDF)
- Daikin: Simple Self-Diagnosis by Malfunction Code, SM-TS3, list of error codes (PDF)
- Daikin One error code table for ductless (S21) units, daikinac.com (PDF)
- Daikin Global: Troubleshooting, split and multi-split air conditioners
Last reviewed October 2026. Manufacturers update their pages, and your manual is the final word. Spotted a mistake? Email contact@appliance-error-codes.com.