Thermistor Selection - Hitachi PC-ARFG-E Installation & Operation Manual

SERVICE & INSTALLATION MENU

6.1.3 Thermistor Selection

This function is used to control the indoor temperature using
thermistor in the wired remote controller (Wired Controller
Thermistor) instead of Inlet Air Thermistor in the indoor unit.
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N O T E
• Even if Wired Controller Thermistor controls the indoor temperature,
the temperature of Inlet Air Thermistor in the indoor unit is used for
the protection control such as frost prevention related to Inlet Air
Thermistor.
• When Wired Controller Thermistor controls the indoor temperature
and the abnormal temperature is detected due to a failure such as a
malfunction of Wired Controller Thermistor, the control automatically
switches to Inlet Air Thermistor in the indoor unit.
• To use Wired Controller Thermistor, install the wired remote controller
where:
- The average room temperature can be detected.
- The remote controller is not exposed to direct sunshine or direct
light.
- The unit is not close proximity to a heat source.
- The wired remote controller is not affected by the outside air due
to opening or closing the door and so forth.
• If two wired remote controllers are used as the main and sub, only
Wired Controller Thermistor of the main remote controller is available.
• This function is not effective when using the remote sensor. (The
remote sensor is prioritized excluding outside air processing air
conditioners.)
1 Select "Installation Menu" on the Service & Installation
screen and press "OK".
Service & Installation
Service Menu
Installation Menu
Check Menu
OK Enter
2 Select "Thermistor Selection" setting and press "OK".
Installation Menu
Test Run
Function Selection
Thermistor Selection
Input/Output
Thermistor Calibration in Controller
OK Enter
57 PMML0565 rev.0 - 09/2021
3 If " " or " " is pressed, the setting items are selected in the
following order: "IDU" ↔ "Remote" ↔ "Average". Select the
setting item and press "OK" to confirm the setting.
Select
OK
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N O T E
Select "Remote"to control with the remote sensor when the remote sensor
is connected, and select "IDU"or "Average"to control by the average of the
indoor thermistor and the remote sensor.
4 Press " " to return to the "Installation Menu"screen.
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Thermistor Selection
IDU
Remote
Average
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