Massey Ferguson 10.X.20 – Air Conditioning Panel Module (AIRCON): Issue With Air Circulation Flap Motors (AIRCON)

This indicates a malfunction in the electronic actuator (flap motor) that controls the HVAC system's air circulation flaps (such as the fresh air/recirculation blend doors or temperature blend doors). The system has detected an electrical fault (open circuit, short circuit, or high resistance) or a mechanical binding issue preventing the motor from reaching its commanded position.

• 7724S
• 5712SL
• 7722
• 7722S
• 5713SL
• 7720S
• 7716
• 7718
• T4
• 7715
• 5710SL
• 7726
• 7726S
• 5711SL
• 7718S
• 7719
• 7714
• 7716S
• 7720
• Tier 4 (2015-2021)
• 7715S
• 7724
• 4707
• 4708
• 4709
• 4710
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• 7714 to 7726S

1. 1

   Inspect the wiring harness, plugs, and sockets connecting the AC module to the flap motor for any signs of chafing, corrosion, or disconnected pins

2. 2

   Manually check the air circulation flap to ensure it moves freely. Dust, debris, or a broken linkage can cause the flap to jam, which the module interprets as a motor failure due to increased electrical resistance

3. 3

   Verify that the Air Conditioning Module is receiving proper voltage and that there are no CAN bus timeout errors (which can sometimes trigger false actuator faults)

4. 4

   If your diagnostic tool allows, check the feedback voltage from the flap motor's internal potentiometer to see if it registers movement between the hot end-stop and cold end-stop (or open/closed positions)

1. 1

   Access the HVAC Unit

   The HVAC assembly on these Massey Ferguson tractors is typically located in the cab roof. Remove the inner roof headliner/panel to expose the blower motors and the air distribution box.

2. 2

   Locate the Flap Motor

   Identify the specific air circulation flap motor throwing the code (usually mounted on the side of the air distribution box, connected to the flap pivot).

3. 3

   Disconnect Power

   Turn off the tractor's battery isolator switch to prevent electrical shorts.

4. 4

   Remove the Actuator

   Unplug the electrical connector from the flap motor. Remove the mounting screws securing the motor to the HVAC housing.

5. 5

   Install the New Motor

   Align the actuator arm/gear of the new flap motor with the linkage on the HVAC flap. Secure it with the mounting screws.

6. 6

   Reconnect and Reassemble

   Plug the electrical connector back in. Reinstall the cab roof headliner.

7. 7

   Clear Codes and Calibrate

   Use a diagnostic code reader to clear the 10.00.20 fault code. Turn the key on and operate the climate control panel to allow the AC module to calibrate the new flap motor's end-stops.