Graco Reactor E-XP1 Troubleshooting Manual page 39

Reactor Error Code Trouble Shooting Guide
E30: Momentary Loss of Communication
Causes:
o Communications between the display and the motor control board or the motor
control board has been momentarily lost.
Normally, when communication is lost, the corresponding display will show E99. The
corresponding control board will register E30 (The red LED will flash 30 times). If
communications are reconnected, the display can show the E30 for a small time (no more
than about two seconds). It should not be possible for E30 to be shown continuously, unless
there is a loose connection causing the display and the board to continuously loose and regain
communication.
 Check all wiring between the display and the corresponding control board.
E31: Motor Drive Error (E-Series Only)
Cause:
The motor board has failed. (SCR has shorted)
1)
o The motor control board has malfunctioned, "shorted" and needs to be replaced. Rarely is the
control board the cause of this error. Other circumstances such as a motor failure or
inadequate input supply voltage lead to this type of motor board failure. Not in all cases will
an E31 error code appear. Another symptom of a motor drive failure is that the motor will
immediately turn on when input power is applied to the Reactor, running away with no motor
control. This is due to the control being shorted sending full voltage to the motor.
 Motor and motor drive check procedure
o After removing machine from the power source, the drive motor will have to be thoroughly
check, by pulling the top motor brush and rotating the motor manually with the internal fan
blade to inspect the motor commutator all the way around for any evidence of burning or
pocking. Continue to rotate the motor until we have completed one pump cycle, up and down
to insure there is no mechanical interference in pump lower, or gear drive system. Confirming
rotation when connected to a 9vdc battery can then verify the motor is functioning properly.
The Reactor machines that have the large Blue capacitor (E-30/E-XP2) will have to have it
verified for proper function as well.
o If after confirming a good motor and capacitor, and confirming the input power source is at
the required voltage and phase. Replace the drive board. Keep in mind that the power source
should not be interrupted prior to powering down the Reactor unit. This would include the
generator source running out of fuel.
Rev 2.6 (02/2014)
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