Graco Ultimate NOVA 395 PC Operation, Parts page 32

Troubleshooting
Problem
Sprayer does not run at all
AND
Display shows E=02
OR
Control board status light blinks 2
times repeatedly
Sprayer does not run at all
AND
Display shows E=03
OR
Control board status light blinks 3
times repeatedly
32
What to Check
Check transducer or transducer
connections
Check transducer or transducer
connections (control board is not
detecting a pressure signal).
How to check
Make sure there is no pressure in the
system (see Pressure Relief
Procedure, page 13). Check fluid
path for clogs, such as clogged filter.
Use airless paint spray hose with no
metal braid. A small hose or metal
braid hose may result in
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.
Turn ON/OFF switch OFF and
disconnect power to sprayer.
Check transducer and connections to
control board.
Disconnect transducer from control
board socket. Check to see if
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.
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