- Remote control. “CHECK” flashes
- Indoor unit (master). The LEDs on the printed circuit board flash
- Indoor unit (slave)... The LEDs on the printed circuit board do not illuminate and the unit does
not operate at all
- Outdoor unit... The LEDs on the printed circuit board flash and operation stops /
3. The main power is turned on while the remote control connection 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. /
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