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12.3. Test operation and self-diagnosis
12.3.1. Test Run (Forced Cooling mode and Heating mode)
1. Always use a properly-insulated tool to operate the switch on the circuit board.
(Do not use your finger or any metalic object.)
2. Never turn on the power supply unit until all installation work has been completed.
3. Turn on the circuit breaker before test operation extends past 12 hours.
4. Check that the voltage is -10% of the rated voltage (198V) or higher when starting the unit.
The unit will not operate if the voltage is less than -10% of the rated voltage (198V).
5. If test operation continue more than 30 minutes, test operation finishes and shift to normal operation.
12.3.2. Test operation from the outdoor unit
During emergency operation or when test operation is carried out, the LED on the P.C.B. will turn on.
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