Wiring Error Check; Power Save Mode; Mode Priority Function - Panasonic CU-2E15PBE Service Manual

14.1.3

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.
o
Press WIRING CHECK button (SW3) on the Service PCB inside the outdoor unit for more than 10 seconds
o
to start wiring check operation.
Wiring check process will complete in approximately 20 - 25 minutes. However, wiring check operation will
o
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:
LED 2 3 4 5
Room A B C D
All flashing
LED2, 4, 6 and LED 3, 5
alternatively flashing
Flashing one after
another
Other than above
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.
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.
6 Message
-
Automatic correction impossible
Wiring check in progress
Automatic correction completed
Unit has abnormality (NOTE 4)
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