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101
(When remote control display shows “power supply”)
Clock setting, and no timer setting
Clock setting, and no timer setting
(When remote control display shows “No power supply”)
102
12.2. During twin operation
System example
1. The main power is turned on while the transmission wires between the indoor units are not connected.
(open circuit at A or B)
Symptom
Remote control unit: “check” flashes
Error code: F30-01 (connected indoor capacity error)
Indoor unit No. 1: LED1 on P.C.B flashes
Indoor unit No. 2: no power supply
Outdoor unit: LED6, 7 on P.C.B flashes (connected indoor capacity error)
Symptom
Remote control unit: “check” flashes
Error code: F30-01 (connected indoor capacity error)
Indoor unit No. 1: LED1 on P.C.B flashes
Indoor unit No. 2: no power supply
Outdoor unit: LED6, 7 on P.C.B flashes (connected indoor capacity error)
2. The main power is turned on while the transmission wires between the indoor units are not connected.
(open circuit at section C)
Symptom
Remote control unit: “check” flashes
Error code: F30-01 (connected indoor capacity error)
Indoor unit No. 1: LED1 on P.C.B flashes
Indoor unit No. 2: no power supply
Outdoor unit: LED5, 6 on P.C.B flashes (connected indoor capacity error)
Symptom
Remote control unit: “check” flashes
Error code: F30-01 (connected indoor capacity error)
Indoor unit No. 1: LED1 on P.C.B flashes
Indoor unit No. 2: no power supply
Outdoor unit: LED5, 6 on P.C.B flashes (connected indoor capacity error)
3. The main power is turned on and the connection wire is all ok.
If operation starts in this condition, combination of the B50DBE8 outdoor unit and F24DB4E5 indoor unit will result in
abnormal operation.
Symptom
Remote control unit: “check” flashes
Error code: F30-01 (connected indoor capacity error)
Indoor unit: LED1 on P.C.B flashes
Outdoor unit: LED6, 7 on P.C.B flashes
abnormal operation.
Symptom
Remote control unit: “check” flashes
Error code: F30-01 (connected indoor capacity error)
Indoor unit: LED1 on P.C.B flashes
Outdoor unit: LED6, 7 on P.C.B flashes
103
4. The main power is turned on and the connection wire is all ok.
If operation starts in this condition, combination of the B50DBE8 outdoor unit and F24DB4E5 indoor unit will result in
abnormal operation.
Symptom
Remote control unit: “check” flashes
Error code: F30-01 (connected indoor capacity error)
Indoor unit: LED1 on P.C.B flashes
Outdoor unit: LED6, 7 on P.C.B flashes (connected indoor capacity error)
abnormal operation.
Symptom
Remote control unit: “check” flashes
Error code: F30-01 (connected indoor capacity error)
Indoor unit: LED1 on P.C.B flashes
Outdoor unit: LED6, 7 on P.C.B flashes (connected indoor capacity error)
Remedy
1. Turn off the main power.
↓
2. Connect the disconnected wire correctly.
↓
3. Turn on the main power.
↓
4. After 1 minute, start the operation using the remote control.
(Indoor unit operation will start according to the remote control setting.)
(Outdoor unit operation will start after 3-5 minutes.)
(Outdoor unit operation will start after 3-5 minutes.)
12.3. During group control operation
System example
1. The main power is turned on while the transmission wires between the indoor units are not connected.
(open circuit at A or B or C)
Symptom
Operation of indoor unit No.1 and No.3 is possible.
However “check” flashes in the remote control display for 3-5 minutes after main power is turned on.
Remote control unit: “check” flashes
Error code: F30-01 (indoor capacity error)
Indoor unit: LED1 on P.C.B flashes
Outdoor unit: LED6, 7 on P.C.B flashes
Symptom
Operation of indoor unit No.1 and No.3 is possible.
However “check” flashes in the remote control display for 3-5 minutes after main power is turned on.
Remote control unit: “check” flashes
Error code: F30-01 (indoor capacity error)
Indoor unit: LED1 on P.C.B flashes
Outdoor unit: LED6, 7 on P.C.B flashes
2. The main power is turned on while the remote control connection wire is not connected.
(open circuit at section D)
Symptom
Nothing abnormal appears on the remote control display.
Operation of indoor unit No.1 and No.2 is possible.
However indoor unit No.3 cannot be operated.
Symptom
Nothing abnormal appears on the remote control display.
Operation of indoor unit No.1 and No.2 is possible.
However indoor unit No.3 cannot be operated.
104
Remedy
1. Turn off the main power.
↓
2. Connect the disconnected wire correctly.
↓
3. Turn on the main power.
↓
4. After 1 minute, start the operation using the remote control.
(Indoor unit operation will start according to the remote control setting.)
(Outdoor unit operation will start after 3-5 minutes.)
(Outdoor unit operation will start after 3-5 minutes.)
12.4. Test operation and self-diagnosis
12.4.1.
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 metallic 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, 1 phase or 342V, 3 phase) or higher when starting the unit.
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, 1 phase or 342V, 3 phase) or higher when starting the unit.
The unit will not operate if the voltage is less than -10% of the rated voltage (198V, 1 phase or 342V, 3 phase).
5. If test operation continue more than 30 minutes, test operation finishes and shift to normal operation.
6. Test operation mode can be selected cooling mode and heating mode.
12.4.2.
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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