Graco 312066z Manuale Utente

Communication Diagnostic Codes 

16

312066Z

The E32 error code indicates a high temperature condi-
tion within the motor control board (701). This could be 
caused by an abnormally high ambient temperature in 
the work location, blockage of cooling vents in the cabi-
net, or the failure of the cooling fan inside the cabinet.

1.

Relieve pressure, page 23. Verify low pressure with 
analog gauges.

2.

Turn main power OFF 

 then ON 

.

If error still remains, identify cause of the overtempera-
ture condition and remedy.

Communications between the display and the motor 
control board or the temperature control board have 
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 recon-
nected, the display can show the E30 for a short time 
(no more than about two seconds). It should not be pos-
sible for E30 to be shown continuously, unless there is a 
loose connection causing the display and the board to 
continuously lose and regain communication. 

Check all wiring between the display and the corre-
sponding control board.

Communications between the display and the motor 
control board or the temperature control board has been 
lost. When communication is lost, the corresponding 
display will show E99. 

1.

Check all wiring between the display and the corre-
sponding control board. Pay close attention to the 
wire crimping on plug J13 for each board.

2.

Measure the incoming voltage to the board (it 
should be ~ 230Vac).

3.

If it was only receiving 1 leg of the 230Vac the board 
may light up, and still not function properly. Correct 
the incoming voltage problem.

Step 2 measures line voltage and should be done by a 
qualified electrician. If work is not performed properly 
it may cause electric shock or other serious injury.