Massey Ferguson 8600 series tractors – Air conditioning error codes

Massey Ferguson Fault Codes

No.	Component(s) concerned	Cause(s)	Consequence(s)
1-	Mixed air temperature sensor 1 fault	Sensor open	The water valve opening is controlled manually.
			The air conditioning is controlled manually.
2	Mixed air temperature sensor 1 fault	Sensor short-circuited	The water valve opening is controlled manually.
			The air conditioning is controlled manually.
3	Mixed air temperature sensor 2 fault	Sensor open	The water valve opening is controlled manually.
			The air conditioning is controlled manually.
4	Mixed air temperature sensor 2 fault	Sensor short-circuited	The water valve opening is controlled manually.
			The air conditioning is controlled manually.
5	Ambient temperature sensor fault	Sensor open	The water valve opening is controlled manually.
			The air conditioning is controlled manually.
6	Ambient temperature sensor fault	Sensor short-circuited	The water valve opening is controlled manually.
			The air conditioning is controlled manually.
7	External air temperature sensor fault	Sensor open	The water valve opening is controlled manually.
			The air conditioning is controlled manually.
8	External air temperature sensor fault	Sensor shortcircuited	The water valve opening is controlled manually.
			The air conditioning is controlled manually.
9	Evaporator temperature sensor fault	Sensor open	The air conditioning is turned off and cooling is not possible.
10	Evaporator temperature sensor fault	Sensor shortcircuited	The air conditioning is turned off and cooling is not possible.

No.	Component(s) concerned	Cause(s)	Consequence(s)
11	Solar sensor failure	The signal from the solar sensor is out- side its limits or is giving an impossible value.	The system takes a default value of 300 W/m².
14	Recirculation actuator no. 1 input error	The signal from the potentiometer of recirculation actuator no. 1 is outside its operating range.	The recirculation actuator (no. 1 and 2) is automatically set to the “external air” position.
15	Potentiometer recirculation actuator (no. 1 & 2) reference error	The potentiometer reference is short circuited to the earth.	The recirculation actuator (no. 1 and 2) is automatically set to the “external air” position.
16	Input error from selected temperature potentiometer	The signal is outside its operating range.	The system switches to automatic mode at a temperature selected by default (21°C).
17	Input error from fan speed potentiometer	The signal is outside its operating range.	The system controls the fan speed automatically.
18	Ambient temperature sensor fan fault	The fan does not turn.
19	Stepper motor output error (water valve)	The stepper motor does not operate correctly.
20	Recirculation actuator motor (no. 1 and 2) output error	The recirculation actuator does not operate correctly.	The recirculation actuator motor output (no. 1 and 2) is deactivated.
21	Air conditioning relay output error	The relay does not operate correctly.
22	Water pump relay output error	The relay does not operate correctly.
23	Fan relay output error	The relay does not operate correctly.
24	Engine speed error	The CAN message is not valid.	The system considers the last value received within 2 seconds.
24	Engine speed error	The CAN message is not valid.	If no CAN message is received during this time, the system takes a default value of 1500 rpm.
25	Vehicle speed error	The CAN message is not valid.	If no CAN message is received, the system considers the last value received within 2 seconds (20 consecutive mes- sages).
26	Engine water temperature error	The CAN message is not valid.	The system considers the last value received within 10 seconds.
26	Engine water temperature error	The CAN message is not valid.	If no CAN message is received during this time, the system takes a default value of 90°C.
27	Fan speed controller no. 1 output error	The signal is outside its operating range.
28	Failure due to undervoltage	The supply signal is lower than the minimum value.	The control unit operates in degraded mode.
29	Failure due to overvoltage	The supply signal is higher than the maximum value.	The control unit is deactivated.
30	Fan speed controller no. 2 output error	The signal is outside its operating range.
31	Fan speed controller no. 1 return error	The signal is outside its operating range.
32	Fan speed controller no. 2 return error	The signal is outside its operating range.
33	Recirculation actuator no. 2 input error	The signal from the potentiometer of re- circulation actuator no. 2 is outside its operating range.	The recirculation actuator (no. 1 and 2) is automatically set to the “external air” position.