Troubleshooting

Problem

What to Check

How to check

 

 

 

Sprayer does not run at all

Check transducer or transducer

Make sure there is no pressure in the

AND

connections

system (see Pressure Relief

 

Procedure, page 13). Check fluid

Display shows E=02

 

 

path for clogs, such as clogged filter.

OR

 

Use airless paint spray hose with no

Control board status light blinks 2

 

metal braid. A small hose or metal

 

braid hose may result in

times repeatedly

 

 

high-pressure spikes.

 

 

 

 

Turn ON/OFF switch OFF and

 

 

disconnect power to sprayer.

 

 

Check transducer and connections to

 

 

control board.

 

 

Disconnect transducer from control

 

 

board socket. Check that transducer

 

 

and control board contacts are clean

 

 

and secure.

 

 

Reconnect transducer to control

 

 

board socket. Connect power, turn

 

 

ON/OFF switch ON and control knob

 

 

1/2 turn clockwise. If sprayer does not

 

 

run properly, turn ON/OFF switch

 

 

OFF and go to next step.

 

 

Install new transducer. Connect

 

 

power, turn ON/OFF switch ON and

 

 

control knob 1/2 turn clockwise.

 

 

Replace control board if sprayer does

 

 

not run properly.

 

 

 

Sprayer does not run at all

Check transducer or transducer

Turn ON/OFF switch OFF and

AND

connections (control board is not

disconnect power to sprayer.

detecting a pressure signal).

Check transducer and connections to

Display shows E=03

 

 

control board.

OR

 

 

Disconnect transducer from control

Control board status light blinks 3

 

 

board socket. Check to see if

times repeatedly

 

transducer and control board contacts

 

 

are clean and secure.

 

 

Reconnect transducer to control

 

 

board socket. Connect power, turn

 

 

ON/OFF switch ON and control knob

 

 

to 1/2 turn clockwise. If sprayer does

 

 

not run, turn ON/OFF switch OFF and

 

 

go to next step.

 

 

Connect a confirmed working

 

 

transducer to control board socket.

 

 

Turn ON/OFF switch ON and control

 

 

knob to 1/2 turn clockwise. If sprayer

 

 

runs, install new transducer. Replace

 

 

control board if sprayer does not run.

 

 

 

34

334466A

Page 34
Image 34
Graco 334466A Sprayer does not run at all Check transducer or transducer, Connections, Braid hose may result, Secure