Graco VRM Instructions Manual page 69

Error
Code Error Name Error Description
The motor has reached a
speed that should not be
High Motor
WKH1 reached in normal operation
Speed
and was shutdown to prevent
possible damage
Red Tank
WM06
Con. Fault
Blue Tank
WM05
Con. Fault
Red Inline
WM03
Con. Fault
Blue Inline
WM01
Con. Fault
High current to relay 1
Red Hose
WM02
Con. Fault
Blue Hose
WM04
Con. Fault
Red Chiller
WM07
Con. Fault
Blue Chiller
WM08
Con. Fault
Red Blanket
WMA6
High Temp.
Tank blanket is above the
Blue Blanket defined high alarm limit
WMB5
High Temp.
Red Tank
WMC6
Con. Fault
Blue Tank
WMC5
Con. Fault
Red Inline
WMC3
Con. Fault
Blue Inline
WMC1
Con. Fault
Unexpected current to relay 1
Red Hose
WMC2
Con. Fault
Blue Hose
WMC4
Con. Fault
Red Chiller
WMC7
Con. Fault
Blue Chiller
WMC8
Con. Fault
Motor
A general fault has occurred
WMH1 Controller
within the MCM
Fault
313873C
Error
Type Cause
No power to directional
valve
Bad directional valve
connection
Directional valve failure
Hydraulic power pack
failure
Alarm
Defective encoder
Motor no longer coupled
to hydraulic pump
Supply tube from
hydraulic pump to
manifold is loose or
broken
Broken motor shaft
Alarm
Alarm
Alarm
Alarm
Broken contactor
Alarm
Alarm
Alarm
Alarm
Alarm Defective RTD
Defective High Power
Temperature Control
Alarm
Module
Loose connections
Alarm
Alarm
Alarm
Alarm
Shorted module
Alarm
Alarm
Alarm
Alarm
Deviation Internal hardware failure
Appendix D - ADM Event and Error Codes Overview
Solution
Make sure the directional valve has power
Make sure the cord to the directional valve is
connected to the correct port and the cord is not
damaged
The directional valve will need to be replaced
The hydraulic power pack will need repair
Replace encoder
Reset coupler per specifications and retighten set
screws
Retighten or replace supply tube
Replace motor
Replace contactor
Replace RTD
Replace High Power Temperature Control Module
Tighten connections
If temperature is being affected by a zone that has
been disabled, replace heat module
Cycle power, if the error persists the MCM will need to
be replaced
69