Graco 334466A Sprayer does not run at all, Remove pump and try to run, Display shows E=05, Step

		Troubleshooting
Problem	What to Check	How to check
Sprayer does not run at all	Check voltage supply to the sprayer	Turn ON/OFF switch OFF and
AND	(control board is detecting a multiple	disconnect power to sprayer.
	voltage surges).	Locate a good voltage supply to
Display shows E=04
		prevent damage to electronics.
OR
Control board status light blinks 4
times repeatedly
Sprayer does not run at all	Control is commanding motor to run	1.Remove pump and try to run
AND	but motor shaft does not rotate.	sprayer. If motor runs, check for
	Possibly locked rotor condition, an	locked or frozen pump or drive train.
Display shows E=05
	open connection exists between	If sprayer does not run, continue to
OR	motor and control, there is a problem	step 2.
	with motor or control board, or motor	2.Turn ON/OFF switch OFF and
Control board status light blinks 5
	amp draw is excessive.
		disconnect power to sprayer.
times repeatedly
		3.Disconnect motor connector(s) from
		control board socket(s). Check that
		motor connector and control board
		contacts are clean and secure. If
		contacts are clean and secure,
		continue to step 4.
		4.Connect a DC voltmeter across the
		two motor wires – red & black spin
		the motor fan and check for a
		voltage to register on the meter. If
		voltage is not present, check
		brushes. If OK, replace motor. If
		voltage is present, go to step 5.
		5.Perform a spin test by connecting a
		9 –12 Volt battery to the motor
		leads. Motor leads may vary in style
		and size. Locate the two wires
		going to the carbon brushes
		normally Red and Black. Motor
		should spin when battery is
		connected to the motor leads.

BLACK (-)

RED (+)

YELLOW

9-VOLT BATTERY ti24722a

334466A 35