Troubleshooting - Outdoor Unit Related Si18-201
282 Service Diagnosis
3.3.20 Rise in BOX Temperature
Outdoor Unit
Indication
L3
Method of
Malfunction
Detection
Detection of abnormal rise in BOX temperature is carried out by the temperature detected by
thermistor.
Malfunction
Decision
Conditions
When the detected BOX temperature came to 85°C or higher
"
When an abnormal rise in BOX temperature is generated 4 times, the system shuts down.
(The 4-time counter resets itself when no outdoor unit abnormality occurs within cumulative
60-minute after the abnormal temperature rise generation.)
Supposed
Causes
"
Incorrect installation
"
Abnormally high ambient temperature of electrical parts
"
Outside causes other than noise, etc.
Troubleshooting
Check No.1
Refer to P.300
Use as it is. (Could be
temporary causes including
noise, etc.)
Apply required remedy
subject to the case.
YES
NO
(MF039)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Start
Is
the abnormal
rise re-generated when
turning the power supply
on again to
restart?
Check No. 1
Installation conditions check
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