Table of Contents
Advertisement
9-2-6 Outdoor Discharge temperature sensor error
Indoor display
7-SEG DISPLAY
C251
Outdoor Discharge temperature sensor error
Outdoor display
LED ON
LED BLINKING
1. Checklist :
1) Is the sensor connected correctly?
2) Is the sensor placed correctly?
3) Does the both terminal of sensor satisfy the resistance value in accordance with temperature?
4) Is the resistance value of sensor connection pull-up correct?
2. Troubleshooting procedure
Is the sensor connector("A") connected
correctly in accordance with a color?
YES
Is the sensor resistance value
"B" 200kohm±3% at the room temperature
of 25 ℃ ?
YES
Connect the sensor to PBA connector supply
power and measure the voltage of "B"in the
connector
Below 0.5Vdc or Over 4.5Vdc?
NO
Micom error or connector check
YES
Exchange the Outdoor PBA
DESCRIPTION
Outdoor Discharge temperature sensor error
LED OFF
NO
NO
YES
54
Model
"A"
ALL
CN251
Reconnect the sensor connector.
Sensor Replace
Sensor resistance value : 20 - 242kohm
30 - 166ohm
35 - 138ohm
40 - 115kohm
Exchange the Outdoor PBA
"B"
CN251 #1-#2
Advertisement
Table of Contents
