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Q. Forgot Engineers code for SMS programming
A. You will need to complete a hard reset by following the steps below.
Note this will erase all data stored on the PCB.
1) Power off the unit. (approx 60 secs)
2) Link the terminals marked OPEN.
3) Switch on the power.
4) After several seconds the relay will click.
5) The unit will then clear memory and be defaulted.
6) Remove the link and wait around 20 seconds.
7) Reboot the unit for good measure.
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