Massey Ferguson 10.X.23 – AC Module (AIRCON): Optional Cab Extra Fan Relay Signal From AC Module (AIRCON)

Communication or electrical circuit failure regarding the signal sent from the Air Conditioning control module to the relay that powers the optional extra cab fan.

• 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

1. 1

   Verify the optional cab extra fan relay in the cab roof or main fuse/relay panel for continuity and ensure it is not stuck open or closed

2. 2

   Inspect the wiring harness and connections between the AC Module (AIRCON) and the extra cab fan relay for chafed wires, loose pins, or corrosion

3. 3

   Test the AC Module output to verify it is sending the voltage signal to the relay when the extra fan is commanded on

1. 1

   Replace relay

   If the relay is faulty, replace it.

2. 2

   Repair wiring harness

   If the wiring is damaged, repair the harness.

3. 3

   Reprogram or replace AC module

   If the module fails to send a signal despite good inputs, the AC module itself may require reprogramming or replacement.