Troubleshooting by Indication on the Remote Controller ESIE09-05
180 Troubleshooting
3.14 “CJ” AHU: Malfunction of Thermostat Sensor in Remote
Controller
Remote
Controller
Display
CJ
Applicable
Models
AII AHU models
Method of
Malfunction
Detection
Malfunction detection is carried out by temperature detected by remote controller air
temperature thermistor. (Note1)
Malfunction
Decision
Conditions
When the remote controller air temperature thermistor becomes disconnected or shorted while
the unit is running.
Supposed
Causes
Defect of remote controller thermistor
Defect of remote controller PC board
Troubleshooting
Note: In case of remote controller thermistor malfunction, unit is still operable by suction air thermistor
on AHU.
∗ Refer to thermistor resistance / temperature characteristics table on P232.
Turn power supply OFF, then
power ON again.
Is "
CJ
"
displayed on the remote
controller?
YES
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Replace remote controller.
External factor other than
equipment malfunction.
(for example, noise etc.)
(V2787)
NO
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