Sullair 400HH - Troubleshooting Guide

375, 375H, 400HH, 425, 425H T4F User Manual 4: Operation
02250223-036 R01
Subject to EAR, ECCN EAR99 and related export control restrictions. 45
4.5 Troubleshooting
The following guide contains symptoms and usual
causes for the problems that may occur throughout the
compressor system. Each warning or fault message that
may appear is listed along with conditions for the prob-
lem, a probable cause, and a suggested solution to the
pr
oblem.
Do not assume that these are the only troubles
that may occur. The following table denotes all warning/
shutdown conditions that the Single Axle Controller will
sense. Shutdown conditions will display the associated
message on the LCD, light the compressor shutdown
panel lamp, shut the system down, and wait for operator
to toggle the MENU TOGGLE switch to “EXIT” to
acknowledge the fault condition before a restart may be
attempted. Warning conditions display the associated
message on the LCD and light the compressor warning
lamp. Under a warning condition the system will continue
to operate normally.
Error Message
W
arning
/Shutdown/
Prevent Startup Description Recommended action
No Message Prevent Startup
No power or initialization
of controller.
Turn OFF/ON/START switch to
ON position.
Make sure E-stop is not engaged
(pull out).
Turn battery disconnect switch to
ON position.
Check battery voltage.
Check connections between Sin-
gle Axle Controller and harness
and at the starter and harness.
Make sure Single Axle Controller
internal circuit breakers (4) are
closed.
Low Fuel Level
Shutdown/Prevent
Startup
Fuel level low shutdown
threshold reached.
Add fuel and restart.
Comp High Temp
Shutdown/Prevent
Startup
CDT sensor is above shut-
down setpoint.
Verify thermistor resistance
between 803  @ -50°C and
1573  @ 150°C.
Coolers dirty. Clean coolers.
Fan slipping. Check/adjust fan belt tension.
Compressor oil thermostat
malfunction.
Replace thermostat.
RTT High
Shutdown/Prevent
Startup
RTT (Receiver Tank Tem-
perature) switch normally
closed, has opened.
Replace the RTT switch.
Primary Shutdown
Shutdown/Prevent
Startup
After filter restriction too
high (filters dirty).
Replace filters.
After filters dp module
malfunction.
Check source voltage and ground
and correct if necessary.
Visually inspect for damage and
replace if necessary.
WL Comm Error
Shutdown/Prevent
Startup
Loss of LIN communica-
tion with warning bank
module.
Check Single Axle Controller and
ensure that all gauge and warn-
ing bank connectors are well
seated/engaged.