Graco 259079, Operation Manuals

Page: 82 / 102

Troubleshooting
Error
Code Error
Position Type Name Cause Solution
T4DH Hose ALARM
High Chemical
Temperature
Bad High Power
Temperature Control
Module.
Replace HPTCM. See
System Repair manual.
Broken Fan. Check fan relay (K4) and
fuse (30 Amp ATO “F3”) on
load center board. Replace
if needed.
T4DE Heat
Exchanger
ALARM High Temperature
Coolant Outlet
Plugged radiator. Replace if needed.
Cooling fans are not
operating properly.
Ensure ambient temperature
is less than 120°F(48°C).
Check to see that the fans
are moving. Measure
voltage to fans. There
should be 240 VAC. If no
voltage is measured, check
wiring between fan and
circuit breaker CB03.
If the fans have voltage but
are not moving, replace fan.
Use an air hose to blow out
around the fan housings and
remove any built-up debris.
T4NM MCM ALARM High Motor
Temperature
Bad electric motor. Replace electric motor. See
System Repair manual.
82 3A1705E