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

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Image 35
Graco 334466A Sprayer does not run at all, Remove pump and try to run, But motor shaft does not rotate, Display shows E=05