Daikin MicroTech III DPS - Troubleshooting: Error Code L1; L1 - Defective Inverter PC Board

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www.DaikinApplied.com 81 OM 1263 • MICROTECH UNIT CONTROLLER
ERROR CODE: L1 – Defective Inverter PC Board
Remote
Controller
Display
L1
Method of
Malfunction
Detection
Malfunction is detected based on the current value during waveform output before starting
compressor.
Malfunction is detected based on the value from current sensor during synchronous
operation when starting the unit..
Malfunction
Decision
Condition
Overcurrent (OCP) ows during waveform output.
Malfunction of current sensor during synchronous operation.
IPM failure.
Supposed
Causes
● Inverter PC board (A2P)
– IPM failure
– Current sensor failure
– Drive circuit failure