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ERROR CODE: L4 – Malfunction of Inverter Radiating Fin Temperature Rise
L4
Remote
Controller
Display
Method of
Fin temperature is detected by the thermistor of the radiation fin.
Malfunction
Detection
Malfunction
When the temperature of the inverter radiation fin increases above 188.6°F.
Decision
Condition
● Actuation of fin thermal (Actuates above 188.6°F)
Supposed
● Defect of inverter PC board
Causes
● Defect of fin thermistor
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OM 1263 • MICROTECH UNIT CONTROLLER
Troubleshooting
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