Defect Code 28

Defect code: 28, Left heater sensor

Explanation: This defect code is stored when there is a short to ground, to plus or a break at the connector, white Pin 24.

Effect of defect: If the defect is a current defect, a substitute value of 55°C is used.

Possible cause: Voltage supply not OK, wire or left heater sensor defective.

Troubleshooting: Check voltage supply (approx. 5 V with sensor disconnected) as well as wires and repair or replace component as required.