Troubleshooting; Error Codes And Troubleshooting - Graco 259079 Operation Manuals

Troubleshooting

Troubleshooting
See Errors, page 72 for information about errors that
can occur on the system.

Error Codes and Troubleshooting

See Reactor repair manual for non-error based
troubleshooting.
Error Error Type
Code Location
A1N1 MCM ALARM
A4CH Hose ALARM
74
See Troubleshooting, page 53 for the ten most
recent errors that have occurred on the system. See
Troubleshoot Errors, page 73 to diagnose errors that
have occurred on the system.
See Error Codes and Troubleshooting for error
codes, possible causes, and solutions.
Name Cause
No Motor Current Loose or bad
connection.
Motor brushes
completely worn down.
Bad MCM.
High Relay Wiring problem.
Current Hose
Shorted contactor.
Note
Error codes are stored in the error log and
displayed on the Error and Troubleshooting
screens on the ADM.
Solution
Check wiring between
MCM and motor.
Check motor brushes and
replace if needed.
Replace MCM. See
System Repair manual.
Check wiring between
HPTCM and contactor.
Look for shorted wire
between HPTCM and
contactor terminals A1 and
A2.
Measure resistance
between A1 and A2
terminals. The resistance
should be about 289Ω.
If contactor is measuring
less than 100Ω, then the
contactor is shorted and
should be replaced.
3A1705E