Hitachi P-N23NA2 Service Manual

6 Optional functions
Indoor units input and output signals
SMGB0099 rev.0 - 12/2016
204
6.1.3 Programming with remote controller
For a complete and detailed explanation regarding the programming with the remote controller, refer to the “Remote
controller PC-ARFPE installation and operation manual”.
6.1.4 Description of optional input signals
Control by eld-supplied room thermostat
On-screen display: 01 or 02.
When a eld-supplied room thermostat is used instead of the inlet thermistor on the indoor unit, connect the wiring and
use the materials as indicated in “6.1.1 Available ports”.
Example:
• Room thermostat Input (for Cooling) is set to terminals 2 and 3 of CN3
• Room thermostat Input (for Heating) is set to terminals 1 and 2 of CN3
Operation
• Cooling operation: Compressor is ON by closing terminals 2 and 3 of CN3
Compressor is OFF by opening terminals 2 and 3 of CN3
• Heating operation: Compressor is ON by closing terminals 1 and 2 of CN3
Compressor is OFF by opening terminals 1 and 2 of CN3
Cooling
Signals 2
and 3 of
CN3
Compressor
Time
ON
ON
OFF
OFF
Heating
Signals 1
and 2 of
CN3
Compressor
Time
ON
ON
OFF
OFF
Specications for eld-supplied room thermostat:
• Manufacturer or type: equivalent to YAMAKATE R7031P005, R7031Q005.
• Contactor charge: 12 Vdc
• Difference of over 1.5 degrees.
• Do not use a mercury thermostat.
• The remote control must remain connected to the unit. When the power supply is reconnected, start the unit by
pressing the on button. The compressor will then run under the control of the eld-supplied thermostat. All other
functions are controlled in the normal manner via the remote control.

Hitachi P-N23NA2 Specifications

General

Brand	Hitachi
Model	P-N23NA2
Category	Air Conditioner
Language	English