Troubleshooting - Outdoor Unit Related Si18-201
298 Service Diagnosis
3.3.33 Faulty BOX Thermistor Malfunction
Outdoor Unit
Indication
P3
Method of
Malfunction
Detection
Malfunction of BOX temperature thermistor is detected using the temperature detected by the
thermistor.
Malfunction
Decision
Conditions
When the detected temperature came to 92°C or higher, or to -30°C or lower
"
When BOX thermistor malfunction is detected once, the system shuts down.
(The 1-time counter automatically resets itself when cause of malfunction is resolved.)
Supposed
Causes
"
Faulty main unit PC board
Troubleshooting
Start
Replace main unit PC
board.
Reset normally.
Could be outside causes
other than parts defect.
(MF053)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Turn the power supply off
once and then back on.
Is P3 displayed again?
NO
YES
P3 displayed
To Next Page
Loading...
