Cornelius IWC322 Información técnica descargar pdf (Pagina 32)

I-Series Ice Machine Training Manual

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4.9 GREEN BOARD Diagnostics

Erratic Component Operation

Erratic component operation (water pump, condenser fan, hot gas valve, etc.) are

often the result of a poor connection to the 8-pin connector. Before performing diag-

nostics on the circuit board, make sure the 8-pin connector is securely in place.

Check Circuit Board

1. Turn the power switch ON. The D-5 Error-LED indicator will be illuminated for

2 seconds.

2. After the D-5 Error-LED goes out, momentarily short across the bottom two ter-

minals out of the test plug with a jumper wire or screwdriver. Then remove the

jumper. The circuit board is now in test mode.

3. One of these two conditions will exist:

• If the ice thickness potentiometer is within the factory setting, the Error-LED

will flash continuously.

• If the ice thickness potentiometer is not within the factory setting, the Error-

LED will not be lit.

4. In either case, the green LED indicators will illuminate for 2 seconds in the

sequence shown below. They will continue to sequence until the power is turned

off. Failure of the green LEDs to cycle in this sequence indicates a defective cir-

cuit board. Replace the board.

Status Indicators

D6 Green LED Fan

D11 Green LED Hot gas valve(s)

D12 Green LED Water pump

D14 Green LED Contactor

D15 Green LED Dump valve

SERVICE

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Cornelius IWC322 Información técnica Pagina 32