OM 1263 • MICROTECH UNIT CONTROLLER 86 www.DaikinApplied.com
ERROR CODE: L5 – Momentary Overcurrent of Inverter Compressor
Remote
Controller
Display
L5
Method of
Malfunction
Detection
Malfunction is detected from current owing in the power transistor.
Malfunction
Decision
Condition
When an excessive current ows in the power transistor.
(Instantaneous overcurrent also causes activation.)
Supposed
Causes
● Defect of compressor coil (disconnected, defective insulation)
● Compressor start-up malfunction (mechanical lock)
● Defect of inverter PC board