No. 1 and indoor unit No. 3 is possible. / However, “CHECK”
flashes in the remote control unit display for 3-5 minutes after
the main power is turned on.
- Remote control . . . “CHECK” flashes
- Indoor unit No. 2 . . . LED2 on the printed circuit board flashes
(both master and slave units)
- Outdoor unit No. 2 . . . LED3 and LED7 on the printed circuit
board flash /
2. The main power is turned on while the power supply wires
between the indoor units are not connected (open circuit at
section B) / Symptom: / Operation of indoor unit No. 1 and indoor
unit No. 3 is possible / However, if operation is then started in
this condition, the combination of the 28BB outdoor unit and the
14BB indoor unit (master unit) will cause abnormal operation of
indoor unit No. 2 to occur / / If operation continues, an
abnormality will occur on the refrigeration cycle and operation
will stop
- Remote control . . . “CHECK” flashes (indoor unit No. 2
abnormality)
- Indoor unit No. 2 . . . LED2 on the printed circuit board flashes
(both master and slave units)
- Outdoor unit No. 2 . . . The LEDs on the printed circuit board
flash /
3. The main power is turned on while the remote control connection
cord is not connected (open circuit at section C) / Symptom: /
Nothing abnormal appears on the remote control display, and
operation of indoor unit. No. 1 and indoor unit No. 2 is possible. /
However, indoor unit No. 3 cannot be operated. /
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 units . . . Operation will start after 3-5
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