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Si06-313
4.17
Electrical Box Temperature Rise
L3
Remote
Controller
Display
Method of
An electrical box temperature rise is detected by checking the radiation fin thermistor with the
Malfunction
compressor off.
Detection
Malfunction
With the compressor off, the radiation fin temperature is above 80°C (above 75°C in the case of
7.1kW class). (Reset is made when the temperature drops below 70°C.)
Decision
Conditions
Supposed
Causes
Service Diagnosis
Fin temperature rise due to defective outdoor unit fan
Fin temperature rise due to short-circuit
Fin thermistor defective
Connector in poor contact
Outdoor unit PCB defective
Troubleshooting
93
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Table of Contents
Troubleshooting
