24
AHU-KIT temperature sensor OPEN/SHORT error
1) Self check
• Wired remote controller will show the same error shown in the outdoor unit.
Is indoor room temperature
sensor connector properly
connected to PBA socket?
Check the resistance value of room
temperature sensor connector and the
PBA after disconnecting them.
Change the Control-KIT PBA.
Connect the temperature sensor
connector to the PBA socket and
restart the system.
No
Yes
Yes
Yes
Change the room temperature sensor.
No
Temp.(°C)
Resistance
value (
㏀
)
70
2.2
60
3.0
50
4.2
40
5.8
30
8.3
20
12.1
10
18.0
0
27.3
-10
43.0
Is the resistance value larger
than the number shown in
the table on the right?
Outdoor unit display
(ROOM sensor OPEN/SHORT)
(IN sensor OPEN/SHORT)
(OUT sensor OPEN/SHORT)
Explanation
When OPEN/SHORT signal is received for temperature sensor of AHU-KIT
Reason
Poor connection between sensor and the PBA, or poor conditioned sensor.
TROUBLESHOOTING
(Continued)
Note
MXD-A16K1X025A_E_31836-1.indd 24
2010-03-12 ｿﾀﾈﾄ 12:43:07
