Lc" Outdoor Unit: Malfunction Of Transmission Between Inverter And Control Pc Board - Daikin VRV II RXYQ5MY1B Service Manual

SiE39-404
2.36 "LC" Outdoor Unit: Malfunction of Transmission Between
Inverter and Control PC Board
LC
Remote
Controller
Display
Applicable
RXYQ5~48M
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
Supposed
Causes
Troubleshooting
Malfunction of connection between the inverter PC board and outdoor control PC board
Defect of outdoor control PC board (transmission section)
Defect of inverter PC board
Defect of noise filter
External factor (Noise etc.)
Troubleshooting by Indication on the Remote Controller
213