Panasonic U-8ME1E81, Руководство по обслуживанию

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4 -4
2WAY SYSTEM
PCB Settings
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1. Outdoor Unit Control PCB
4 -4
2WAY SYSTEM
PCB Settings
1
2
3
4
5
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8
1. Outdoor Unit Control PCB
Snowfall sensor (CN34)
With the Relay ON, the outdoor fan circulates
regardless of the compressor's running and stop.
Sample Wiring
* When operating in the snow sensor mode, the unit will
not operate by the effect of the freeze-prevention.
Ensure that the wiring length between the outdoor unit
control PCB and Relay is less than 2m.
Lead wire with 3P socket :
(service parts available: part code / CV6233225203)
Select the Relay that is the minimum load 0.1mA for the
contact specifications.
SNOW
(CN34)
Power source
External contact
(Snowfall sensor : field supply)
Outdoor unit
control PC Board
1
2
3
1
3
2
1.
2.
3.
3P plug (red)
Install the air-discharge chamber in the area of outdoor
air temperature lower than approx. 0°C and also
when operating in the cooling mode all through the year.
•
NOTE
Terminal plug
(CN67)
3P plug (black): For communications circuit impedance matching
A connecting socket (3P, black) is attached to the terminal plug at the time of shipment from
the factory.
In the case of link wiring which combines the inter-unit control wiring for multiple systems
into a single communications circuit, leave the connecting socket in place at only one of the
outdoor units, and move the socket from the "SHORT" side to the "OPEN" side at all other
outdoor units. If multiple connecting sockets are left in place, communications trouble will
occur.
•
•
LED1, 2 LED (red × 2)
LED 1 and 2 blink alternately while automatic address setting is in progress.
Display the alarm contents for alarms which were detected by the outdoor unit.
•
•
Power LED
LED4
LED (green): Power indicator
Indicates the DC 5V power on the outdoor unit control PCB.
Run
(CN27)
2P plug (black): Start pin
Short-circuit this pin and apply a pulse signal to start all indoor units in that refrigerant system.
Stop
(CN28)
2P plug (black): Stop pin
Short-circuit this pin and apply a pulse signal to stop all indoor units in that refrigerant system.
AP
(CN24)
2P plug (black): Vacuuming pin
To perform vacuuming of the outdoor unit, short-circuit this pin and then turn the power ON.
All solenoid valves turn ON and vacuuming begins smoothly. (Do not perform automatic
address setting at this time.)
Release the short-circuit to return the unit to normal status.
•
•
Mode
(CN40)
2P plug (black): Indoor unit Heating/Cooling mode change pin
During the summer season, short-circuit this pin in the cooling mode.
Then, perform automatic address setting. When automatic address setting is completed,
release the short-circuit to return the unit to normal status.
When cooling mode is short-circuited, cooling operation can be used.
•
•
When heating mode is short-circuited, heating operation can be used. •
Test
(CN22)
2P plug (black)
This pin is used to test the PCB at the factory.
When the power is turned ON after this pin has been short-circuited, all output signals will
be output in sequence. (Sequential output does not occur if this pin is short-circuited when
the power is already ON.) Releasing this pin returns the unit to normal control.
•
•
SM830223-00̲2WAY VRF.indb 4 2013/02/19 10:20:50
3WAY SYSTEM
PCB Settings
1. Outdoor Unit Control PCB
2P plug (black): Stop pin
Short-circuit this pin and apply a pulse signal to stop all indoor units in that refrigerant system.
Short-circuit during the test run operation.
Open the circuit after the test run.
Used for installing the external timer for the silent mode.
(Refer to the section 1 “5-2-3. Silent mode” in service manual.)
LED1, 2
Run
(CN27)
Stop
(CN28)
AP
(CN24)
Mode
(CN40)
Test
(CN22)
LED (red 2)
2P plug (black): Drive pin
Short-circuit this pin and apply a pulse signal to start all indoor units in that refrigerant system.
Display the alarm contents for alarms which were detected by the outdoor unit.
LED 1 and 2 blink alternately while automatic address setting is in progress.
To perform vacuuming of the outdoor unit, short-circuit this pin and then turn the power
ON. All solenoid valves turn ON and vacuuming begins smoothly. (Do not perform
automatic address setting at this time.)
2P plug (black): Vacuum pin
Release the short-circuit to return the unit to normal status.
3P plug (black): Indoor unit Heating/Cooling mode change pin
When operating the compressors to perform automatic address setting, operation in
Heating mode can be normally used. However, short-circuiting this pin performs
operation in Cooling mode. (Static signal)
Short-circuiting this pin during ordinary operation changes the mode from Cooling to
Heating (if the current mode is Cooling) or from Heating to Cooling (if the current mode
is Heating).
2P plug (black)
CHK
(CN23)
2P plug (black) : Test run pin
SILENT
(CN33)
DEMAND
(CN71)
2P plug (White) : Socket for silent mode
Plug for Demand Terminal (optional CZ-CAPDC3)
FORCED STOP
(CN70)
Plug for Demand Terminal (optional CZ-CAPDC3)
This pin is used to test the PCB at the factory.
When the power is turned ON after this pin has been short-circuited, all output signals
will be output in sequence. (Sequential output does not occur if this pin is short-circuited
when the power is already ON.) Releasing this pin returns the unit to normal control.
Terminal plug
(CN67)
3P plug (black): For communications circuit impedance matching
A connecting socket (3P, black) is attached to the terminal plug at the time of shipment from
the factory.
In the case of link wiring which combines the inter-unit control wiring for multiple systems
into a single communications circuit, leave the connecting socket in place at only one of the
outdoor units, and move the socket from the "SHORT" side to the "OPEN" side at all other
outdoor units. If multiple connecting sockets are left in place, communications trouble will
occur.
•
•
SM830229-00̲3WAY̲TEST RUN.indb 4 2013/03/07 16:27:44
SM830205-04_2WAY_VRF_Euro.indb 4 15/01/20 15:31:37