Lc" Outdoor Unit: Malfunction Of Transmission Between Inverter And Control Pc Board; Lc" Outdoor Unit: Malfunction Of Transmission Between Inverter And Con - Daikin R-410A Service Manual

Troubleshooting by Indication on the Remote Controller
4.32 "LC" Outdoor Unit: Malfunction of Transmission between
Inverter and Control PC Board
LC
Remote
Controller
Display
Applicable
AII outdoor unit models
Models
Method of Check the communication state between inverter PC board and control PC board by micro-
Malfunction computer.
Detection
Malfunction
When the correct communication is not conducted in certain period.
Decision
Conditions
! Malfunction of connection between the inverter PC board and outdoor control PC board
Supposed
! Defect of outdoor control PC board (transmission section)
Causes
! Defect of inverter PC board
! Defect of noise filter
! External factor (Noise etc.)
146
SiBE39-402A
Troubleshooting