Waiting for Comms message on Keypad

Solution

A. Where do you get this message?

· The OilPro Keypad. Technician is trying to dispense.

B. Why do you get this message?

· The max232 chip is damaged, possibly due to lightning or power failure.

C. Whatto do:

1. Replace the max232 chip in the Main Controller unit.

2. If problem persists, change max232 chip in Keypad as well.

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