Troubleshooting
78
313997A
ADM Error Codes with Description, Cause, and Solution
Error
Code
Error Name
Error Description
Error
Type
Cause
Solution
T4N1
Motor Temp.
Shutdown
Motor temperature is too high
and system has been
shutdown to prevent possible
damage
Alarm
No power to fan
Check cord to make sure fan has power
Debris is fan or fan grill
Clear debris from fan/fan grill
Low air volume from fan
Try to stop fan by lightly pressing on the center with a
pencil eraser. If the fan slows down easily it will need
to be replaced
Ambient environmental
conditions are too hot
Move machine to an area below 120°F
Motor may be damaged Motor may need to be replaced
T3N1
Motor Temp.
Cutback
Motor temperature is
approaching a level where
damage is possible so the
motor control module is limiting
the output to a safe level
Advisory
No power to fan
Check cord to make sure fan has power
Debris is fan or fan grill
clear debris from fan/fan grill
Low air volume from fan
Try to stop fan by lightly pressing on the center with a
pencil eraser. If the fan slows down easily it will need
to be replaced
Ambient environmental
conditions are too hot
Move machine to an area below 120°F
Motor/pump coupler may
be rubbing on hydraulic
pump
Reset coupler per specifications and retighten set
screws
T4H1
Oil Temp.
Shutdown
The hydraulic oil is at a
temperature where
performance is impacted
significantly and has resulted
in a system shutdown
Alarm
No Power to Fan
Check cord to make sure fan has power
Debris in fan or fan grill
Clear debris from fan/fan grill
Low air volume from fan
Try to stop fan by lightly pressing on the center with a
pencil eraser. If the fan slows down easily it will need
to be replaced
T3H1
Oil Temp.
Cutback
The hydraulic oil temperature
is approaching a level where
damage is possible so the
Motor Control Module is
limiting the output to a safe
level
Deviation
No power to fan
Check cord to make sure fan has power
Debris is fan or fan grill
Clear debris from fan/fan grill
Low air volume from fan
Try to stop fan by lightly pressing on the center with a
pencil eraser. If the fan slows down easily it will need
to be replaced
MBH1 Low Oil Level
The volume of oil in the tank is
below the minimum level
needed for the system to
properly operate
Alarm
Low oil level
Check oil level and if low add more hydraulic fluid
Loose/bad connection
Check to ensure the hydraulic oil level sensor is
properly connected to the MCM and that the wire has
not been damaged
Bad level sensor
Replace sensor
Leak in hydraulic driver
Inspect hydraulic driver end seals and early leak
detection tubing. Replace seals as necessary and
replace lost oil.
Leak in the hydraulic
reservoir, heat
exchanger
Inspect the hydraulic reservoir fittings and filter for
leaks. Repair or replace as necessary and replace
lost oil.
A4H1
Motor Over
Current
High current has been
detected on a phase and has
been shutdown to prevent
damage
Alarm
Bad internal wiring of the
motor
Replace motor
Short circuit of motor
wiring
Check wiring to the motor to ensure no bare wires are
touching and that no wires are shorted to ground
A4N1
Motor Over
Current
A hardware current fault has
occurred causing a system
shutdown
Alarm
Short circuit of motor
wiring
Check wiring to the motor to ensure no bare wires are
touching and that no wires are shorted to ground
Motor rotor has become
locked
Unplug the directional valve (so pressure will not
build) and try to move the motor again. If this
succeeds then the power pack may need to be
replaced. If the motor is still unable to move, the
bearings or hydraulic pump have likely failed in the
motor and will need to be replaced.
A4M1
Motor Over
Current
Too much current is being
drawn from the wall
Alarm
Low voltage from the wall
during load
Make sure the supply line is properly sized for the
load and is above the minimum voltage requirements
A9C1
Motor Over
Current
A software error has occurred
commanding too much current
Alarm
Bad Motor Control
Module code
Check for MCM software update, load latest MCM
software, if problem persists contact Graco