9512 Troubleshooting GuideIf test operation does not proceed correctlyIf the following symptoms occur after turning on the power, check the wiring connections once more.12.1. For standard installationSystem example1. The main power is turned on while the indoor-outdoor transmission wires are not connected.(open circuit at A: power line)SymptomIndoor unit: no power supplyRemote control unit: no power supplyOutdoor unit: LED2, 4, 6 on P.C.B flashes2. The main power is turned on while the indoor-outdoor transmission wires are not connected.(open circuit at B: power/transmission line)SymptomIndoor unit: no power supplyRemote control unit: no power supplyOutdoor unit: LED2, 4, 6 on P.C.B flashes3. The main power is turned on while the indoor-outdoor transmission wires are not connected.(open circuit at C: transmission line)SymptomRemote control unit: “check” flashesError code: F27-01 (indoor/outdoor transmission error)Indoor unit: LED1 on P.C.B flashesOutdoor unit: LED2, 4, 6 on P.C.B flashesCarry out test operation after approximately 12 hours have passed since the power was turned on (crankcase heater is energized). Ifoperation is started by using the remote control within 1 minute of turning on the power, the outdoor unit settings will not be made cor-rectly and correct operation will not be possible.
