Samsung MCM-D201N - Error on AHU KIT Temperature Sensor OPEN;SHORT; Temperature Feature Table of PT1000; Feature Table of Ma Thermometer

31
ENGLISH
Error on AHU KIT temperature sensor OPEN/SHORT
1. Checking method
Outdoor unit display
(Room temperature sensor OPEN/SHORT)
(Discharge temperature sensor OPEN/SHORT)
Description When the temperature sensor part of AHU KIT is detected as OPEN/SHORT
Reason Incorrect installation of PT1000 temperature sensor or mA thermometer
Temperature feature table of PT1000
f After detaching the connector(CN41), measure the electric resistance between terminal A and terminal C, and
between terminal B and terminal C and then compare the table below. If the resistance is out of -30°C ~ +50°C
section, it will be displayed as error indication area.
Feature of PT1000 sensor
Temperature
Resistance
-50 [℃]
1200 [Ω]
1150 [Ω]
1100 [Ω]
1050 [Ω]
1000 [Ω]
950 [Ω]
900 [Ω]
850 [Ω]
800 [Ω]
-40 [℃] -30 [℃] -20 [℃] -10 [℃] 0 [℃] 10 [℃] 20 [℃] 30 [℃] 40 [℃] 50 [℃]
PT1000
Feature table of mA thermometer
f After measuring the DC voltage of mA+/- terminal in connector(CN41) connection status, compare the voltage with
the table below. If the voltage is out of -50°C ~ +50°C section, it will be displayed as error indication area.
f The range of 4 ~ 20 mA current temperature sensor : -50 ~ +50 °C
Feature of mA thermometer
Temperature
Therminal voltage
-80 [℃] -60 [℃] -40 [℃] -20 [℃] 0 [℃] 20 [℃] 40 [℃] 60 [℃]
0.00 [V]
0.50 [V]
1.00 [V]
1.50 [V]
2.00 [V]
2.50 [V]
3.00 [V]
3.50 [V]
4.00 [V]
4.50 [V]
5.00 [V]
Voltage
• Wired remote controller will display the same error shown in the outdoor unit.
NOTE