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14.1.3 Wiring Error Check
The unit capable to correct the wiring error automatically by following procedures.
o
Confirm the valve on the liquid side and gas side is open.
o
Press WIRING CHECK button (SW3) on the Service PCB inside the outdoor unit for more than 10 seconds
to start wiring check operation.
o
Wiring check process will complete in approximately 20 - 25 minutes. However, wiring check operation will
not start within 3 minutes after compressor is stopped. When outdoor air temperature is less than 41°F (5°C)
or unit has abnormality, wiring check will not start. (See NOTE 2)
The LED 2 to LED 6 in Service PCB inside the outdoor unit indicate the possibility of the correction as shown in
the table below:
LED 2 3 4 5 6 Message
Room A B C D E
Status
All flashing
Automatic correction impossible
LED2, 4, 6 and LED 3, 5
alternatively flashing
Wiring check in progress
Flashing one after
another
Automatic correction completed
Other than above
Unit has abnormality (NOTE 4)
If automatic correct is impossible, check the
indoor unit wiring and piping manually.
NOTE:
1. For two rooms, LED 4,5 and 6 are not illuminated, for three rooms, LED 5 and 6 are not illuminated and for
four rooms, LED 6 is not illuminated after wiring operation complete.
2. If the outdoor air temperature is less than 41°F (5°C) or unit has abnormality, wiring operation will not start.
3. After wiring check operation is complete, LED indication will illuminated until normal operation starts.
4. Follow the product diagnosis procedure. (Check the diagnostic label at the cabinet side plate.)
5. When LED 1 only illuminate, indicates that outdoor unit is operating normally.
14.1.4 Power Save Mode
Power Save Mode can be enabled by pushing POWER SAVE switch (SW4) to ON before power supply ON.
When Power Save Mode is ON, the unit can be operate at lower running current where the breaker capacity not
achieve the requirement.
14.1.5 Mode priority function
Mode priority function can be enabled by pushing MODE PRIORITY switch (SW5) to ON before power supply
ON.
When Mode Priority Function is ON, the mode priority is given to higher capacity indoor units.
14.1.6 Cooling only function
The unit capable to limit the operation mode to Cooling Mode only (Heating mode disabled) by cutting JP1
(COOL ONLY) before power supply ON.
This function prevent wrong operation during the unit installed in server room.
This function could be disabled again by short the JP1 (COOL ONLY) before power supply ON.
Содержание CU-5E36QBU-5
Страница 26: ...26 3 Dimensions ...
Страница 27: ...27 4 Refrigeration Cycle Diagram ...
Страница 28: ...28 5 Block Diagram ...
Страница 30: ...30 7 Electronic Circuit Diagram ...
Страница 31: ...31 8 Printed Circuit Board 8 1 Main Printed Circuit Board ...
Страница 32: ...32 8 2 Noise Filter Printed Circuit Board 8 3 Display Printed Circuit Board ...
Страница 33: ...33 9 Installation Information 9 1 Check Points ...
Страница 50: ...50 ...
Страница 51: ...51 ...