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[
II
Restrictions ]
(6) Various start-stop controls (Indoor unit settings)
Each indoor unit (or group of indoor units) can be controlled individually by setting SW 1-9 and 1-10.
(7) Miscellaneous settings
Cooling-only setting for the indoor unit: Cooling only model (Factory setting: SW3-1 "OFF.")
When using indoor unit as a cooling-only unit, set SW3-1 to ON.
(8) Various types of control using input-output signal connector on the outdoor unit (various connection options)
Function
Operation of the indoor unit when the operation is
resumed after the unit was stopped
Setting (SW1)
*1
*1. Requires that the dipswitch settings for all the units in the group be made.
9
10
Power ON/OFF by the plug
*2*3*4
*2. Not applicable to units with a built-in drain pump or humidifier.
*3. Models with a built-in drain pump cannot be turned on/off by the plug individually. All the units in the same refrigerant
circuits will be turned on or off by the plug.
*4. Do not cut off power to the outdoor unit. Cutting off the power supply to the outdoor unit will cut off the power supply
to the crankcase heater and may cause the compressor to malfunction when the unit is put back into operation.
Indoor unit will go into operation regardless of its oper-
ation status before power off (power failure). (In ap-
prox. 5 minutes)
OFF
ON
Automatic restoration after power failure
Indoor unit will go into operation if it was in operation
when the power was turned off (or cut off due to power
failure). (In approx. 5 minutes)
ON
OFF
Indoor unit will remain stopped regardless of its opera-
tion status before power off (power failure).
OFF
OFF
Type
Usage
Function
Terminal
to be
used
Input
Prohibiting cooling/heating operation (thermo OFF) by an external input to
the outdoor unit.
*It can be used as the DEMAND control device for each system.
Compressor
ON/OFF (level )
CN3D
Performs a low level noise operation of the outdoor unit by an external in-
put to the outdoor unit.
(The unit can perform a NIGHT MODE operation under the following con-
ditions: Outdoor air temperature below 30°C during cooling operation/Out-
door air temperature above 3°C during heating operation.)
NIGHT MODE or
STEP DEMAND
(level)
*1
*1. NIGHT MODE is valid when Dip SW4-7 on the outdoor unit are set to OFF. When Dip SW4-7 are set to ON, STEP
DEMAND control is possible, using different configurations of NIGHT MODE input and compressor ON/OFF input set-
tings.
Forces the outdoor unit to perform a fan operation by receiving signals
from the snow sensor.
Snow sensor signal
input (level)
CN3S
Output
How to extract signals from the outdoor unit
*It can be used as an operation status display device.
*It can be used for an interlock operation with external devices.
Operation status of
the compressor
CN51
Error status
Содержание PUHY-P168
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Страница 134: ... 125 VI Refrigerant Circuit 3 CMB P104 and P108NU GB sub TH25 TH22 LEV3a CP Solenoid valves Block Check valves Block ...
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Страница 366: ... 357 IX Troubleshooting ...
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Страница 368: ... 359 X LED monitor display on the outdoor unit board 1 How to read the LED on the service monitor 361 ...
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