(B) Option controls
Outdoor unit control settings can be changed with the DIP switch and 7-segment display PXX setting on the PCB. In changing
settings in PXX on the 7-segment display panel, you can use SW8 (increasing a number shown on the 7-segment display panel:
one’s place), SW9 (increasing a number shown on the 7-segment display panel: tens place) and SW7 (data write/enter) by
pressing them for a prolonged time.
Contents of control switching Method of control setting
DIP switch setting P00 setting on the 7-segment diaplay panel
Forced cooling/heating mode*2 Switch SW3-7 to ON*1 Select “2” in P07. *1
Cooling test operation Switch SW5-1 to ON + SW 5-2 to ON –
Heating test operation Switch SW5-1 to ON + SW 5-2 to OFF –
Pump down
Close the outdoor unit service valves and perform
the following operations in the stated order:
(1) Switch SW5-2 to ON
(2) Switch SW5-3 to ON
(3) Switch SW5-1 to ON
–
Demand mode *2
(
J13 closed: level input
J13 opend: pulse input
)
SW4-7:OFF, SW4-8:OFF*1 80% (factory setting)
SW4-7:ON, SW4-8:OFF*1 60%
SW4-7:OFF, SW4-8:ON*1 40%
SW4-7:ON, SW4-8:ON*1 00%
Select “1” in P07. *1
Communication protcol setting
SW5-5 ON: previous SL communication,
OFF: new SL communication
–
CnS1 input setting
J13: closed (factory setting) for level input,
J13: opend for pulse imput
–
Defrost setting
J15: closed (factory setting) for normal defrost,
J15: opend for enhanced defrost
–
Operation priority change –
P01
0-3: See (10) Outdoor operation mode
Outdoor fan snow guard control –
P02
0: invalid (factory setting)
1: valid
Outdoor fan snow guard control
operation time setting
–
P03
30sec (factory setting) 10, 30-600sec
Capacity save mode *3 –
P04
OFF: invalid (factory setting)
000, 040, 060, 080 [%]
Silent mode setting *2 –
P05
0 (factory setting) - 3: the larger the number,
the stronger the effect.
External output (CnZ1) function assignment – P06
External input (CnS1) function assignment – P07
Spare – P08-29
*1 The switching activated when both SW and PXX are changed.
*2 The switching activated when a signal is input to CnS1
*3 Capacity restriction is effected without a signal input to CnS1 in the capacity save mode.
•
Functions of outdoor PCB connectors CnS1 and CnZ1
①
CnS1 connector: Following functions can be selected by selecting with [P07] on 7-segment display.
(Note) More than one function cannot operate at same time.
CnS1 short-circuit CnS1 open
“0”: External operation input Operation allowed Operation prohibited
“1”: Demand input Invalid Valid
“2”: Forced cooling/heating input Heating Cooling
“3”: Silent mode input 1 Valid Invalid
Valid Invalid
“4”: Forced oil return input
“5”: Outdoor fan snow protection control input Valid Invalid
“6”: Test run external input 1 (Equal to SW5-1) Test run start Normal operation
“7”: Test run external input 2 (Equal to SW5-2) Cooling test run Heating test run
“8”: Silent mode input 2 Valid Invalid
“9”-“11”: Spare - -
- -
- -
Valid Invalid
“12”: VTCC input
“13”-“14”: Spare
Valid Invalid
“15”: Forced defrost input
“16”: Spare
“17”: Outdoor unit EEV open unit Valid Invalid
“18”-“20”: Spare - -
(1) External input and demand input
(a) Operation permission and prohibition modes
(Note) With 7-segment display [P07]-[0]
1) Operation permission or operation prohibition mode is switched with the connector (CnS1) and the jumper wire (J13)
on the outdoor PCB.
J13: Switching of CnS1 input method
J13 short-circuited: CnS1 is for the level input.
J13 open: CnS1 is for the pulse input.
2) Operation permission/prohibition control by the external input CnS1 of outdoor unit
Input: CnS1 Switching with J13
CnS1: Switching of operation permission/
prohibition modes
Short-circuit
Open
Short-circuit (Level input)
Operation prohibition mode
Operation permission mode
Open (Pulse input)
Switching of operation permission/
operation prohibition modes (Reversal)
Open
Short-circuit
Short-circuit (Level input)
Operation permission mode
Operation prohibition mode
Open (Pulse input)
(NOP)
Note (1) Factory setting – J13: Short-circuit, CnS1: Short-circuit (Short-circuit pin connected)
3) Remote control displays the operating conditions. Operation conditions are transferred to option central control.
4) When the control command from remote control is not accepted (Under the condition of the system all stop status by
external input), “Center” is displayed. See Item 5) mentioned below.
5) CnS1 performs the following operations depending on the short-circuit or open of the jumper wire (J13). In case of
pulse input, the pulse width is 500 ms or larger.
①
J13 – Short-circuit
Remote control operation
Remote control display
Air-conditioner operation/stop
PUSH PUSH PUSH PUSH
OFF
ON (Short-circuit)
OFF (Open)
OFFOFF ONON
Center Center
Remote
②
J13 - Open
Remote control operation
Remote control display
Air-conditioner operation/stop
OFF
OFF
ON OFF OFFON
Air-conditioner ON OK
Center Remote Center Center
Remote
PUSH PUSH PUSH PUSH PUSH
②
CnZ1 connector: Following functions can be selected by selecting with [P06] on 7-segment display.
“0”: Operation output
“1”: Error output
“2”: Compressor ON output
“3”: Fan ON output
“4”: Oil return output
“5”: Sprinkler output
“6” - “9”: Spare
-
187
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