Defect Code 31

Defect Code 31:

*D* Defect code memory: 31 Air volume control wheel:

Explanation: This defect code is stored when there is a short to ground, to plus or a break at connector blue Pin 5.

Effect of defect: If the defect is a current defect, a substitute value of 50 % is used.

Possible cause: Voltage supply (approx.. 5 V) not OK., wire or pc-board of operating unit defective.

Troubleshooting: Check voltage supply (approx.. 5 V) of control wheels as well as wires and repair or renew component as required.