Code 31 (Air Flow Control)

^D^ Defect code memory: 31 Air flow control wheel

Explanation:
This defect code is stored when there is a short to ground, to positive, or a break at the black connector, Pin 4.

Effect of defect:
If the defect is a current defect, a substitute value of 52% is used.

Possible cause:
Voltage supply not OK, wire or control unit selector wheels defective.

Troubleshooting:
Check voltage supply (approximately 5V) of control wheels as well as wires and repair if necessary, or renew component.