Symptoms:
•
Sprayer does not run at all
E=03
•
Digital Display shows E=03
•
Control board status light blinks 3x repeatedly.
What does this mean?
The control board is not detecting a pressure signal.
The pressure transducer or connections are likely the problem.
Troubleshooting Procedure:
1. Set sprayer to OFF and disconnect power to sprayer.
2. Check transducer & connections to control board.
3. Disconnect transducer from control board socket. Check that
transducer and control board contacts are clean and secure.
4. Reconnect transducer to control board socket. Connect power, set
sprayer ON and control knob to ½ turn clockwise. If sprayer does
not run, set sprayer to OFF and go to next step.
5. Connect a known good transducer to control board socket.
6. Set sprayer ON and control knob to ½ turn clockwise. Install new
7. transducer if sprayer runs. Replace control board if sprayer does not
run.
8. You can also check transducer resistance with an ohmmeter;
Between red & black wires – less then 9 k ohm and 3-6 k ohm
between green & yellow wires.
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