Panasonic CU-2E15LBE, Service Manual

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16.1.3. Wiring Error check
• The unit capable to correct the wiring error automatically by following procedures.
- Confirm the valve on the liquid side and gas side is open.
- Press WIRING CHECK button (SW3) on the Service PCB inside the outdoor unit for more than 10 seconds to start wiring
check operation.
- 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 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:
• If automatic correct is impossible, check the indoor unit
wiring and piping manually.
NOTE:
1. For two rooms connection, LED 4 and 5 are not illuminated and for three rooms connections, LED 5 is not illuminated after
wiring operation complete.
2. If the outdoor air temperature is less than 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.
5. When LED 1 only illuminate, indicates that outdoor unit is operating normally.
16.1.4. 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.
16.1.5. 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.
16.1.6. 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.
LED 2 3 4 5 6 Message
Room A B C D -
S
tatus
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)