cord is not connected (open circuit at section C) / Symptom:
- Remote control unit . . . Display of “No power supply”
- Indoor unit (master) . . . LED1 on the printed circuit board
stays illuminated and the unit does not operate
- Indoor unit (slave) . . . LED1 on the printed circuit board stays
illuminated and the unit does not operate
- Outdoor unit . . . LED1 on the printed circuit board stays
illuminated and the unit does not operate
/ Remedy
1. Turn off the main power. /
2. Connect the disconnected wires correctly. /
3. Turn the main power back on. /
4. After 1 minute, start operation using the remote control. / (Indoor
units . . . Operation will start according to the remote control
setting.) / (Outdoor unit . . . Operation will start after 3-5 minutes.)
/ If slave units do not operate even after the wiring has been
corrected (automatic addressing is not possible)
1. Check that DIP switches 1 to 4 and DIP switch 8 are all set to
OFF, and then stop operation. /
2. Press the ADDRESS RESET button (SW3) at the outdoor unit for
approximately 4 seconds / (The self-diagnosis LEDS 2 to 8 will
illuminate in order, and the system is reset once they are all
illuminated.)
/ The above procedure cannot be used to carry out automatic
address resetting during group control. /
1. The main power is turned on while the transmission wires
between the indoor unit and the outdoor unit are not connected
(open circuit at section A) / Symptom: / Operation of indoor unit
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