SECTION 7 - DIAGNOSTIC TROUBLE CODES
7-14
3121788
4235 POWER MODULE TOO HOT -
REDUCED OPERATION
None
4_2
• DriveState =CREEP
• LiftUpState = CREEP
Curtis Code 22: Controller Overtemp Cut-
back
Set:
Heatsink temperature exceeded 185°F
(85°C).
Effect:
Reduced drive and brake torque.
Possible Cause:
•
See Monitor menu>>Controller: Tempera-
ture
•
Controller is performance-limited at this tem-
perature.
•
Controller is operating in an extreme environ-
ment.
•
Excessive load on vehicle
•
Improper mounting of controller.
X
4236 POWER MODULE TOO COLD -
MODULE SHUTDOWN
None
4_2
• DriveState = PREVENTED
• LiftUpState = PREVENTED
Curtis Code 15: Controller Severe Under-
temp
Set:
Heatsink temperature below -40°F (-40°C).
Effect:
ShutdownMotor,ShutdownMainContac-
tor,ShutdownEMBrake, ShutdownThrottle, Full-
Brake, ShutdownPump
Possible Cause:
•
See Monitor menu>>Controller: Tempera-
ture
•
Controller is operating in an extreme environ-
ment.
X
426
MASTER MODULE TEMPERA-
TURE – OUT OF RANGE
4_2
• Normal operation
The Ground Module's internal temperature sen-
sor is out of range. (< 104°F/40°C or > 302°F/
150°C)
•
Flag Error to show that analog input readings
are not being temperature compensated, and
allow normal operation.
•
Not having temperature compensation
affects Elevation sensor accuracy and Pressure
transducer accuracy
X
441
BATTERY VOLTAGE TOO LOW –
SYSTEM SHUTDOWN
None
4_4
• SafeMode
• LiftDownState = PREVENTED
Battery Voltage(VBAT) momentarily dropped
below 14.5V when using flooded lead-acid bat-
teries, or 16.0V when using AGM batteries. With
a low battery charge, this can occur during heavy
current demand due to Drive, Steer, or Lift Up.
Recharge batteries or check for damaged batter-
ies, sulfated batteries, or poor power connec-
tions.
VBAT shall be measured at all times, and this
fault can be engaged at any time, even while
Driving, Lifting, or Steering is active.
•
The Ground Module measured battery volt-
age less than 14.5V when {MACHINE SETUP->
BATTERY = FLOODED}.
•
The Ground Module measured battery volt-
age less than 16.0V when {MACHINE SETUP->
BATTERY = AGM}.
•
Suppress all Help Messages caused by the lack
of system power.
X
Table 7-1. Diagnostic Trouble Codes (DTC)
DTC
Help Message
Alarm
Flash
Code
Action
Trigger
3246R
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