Lc" Outdoor Unit: Malfunction Of Transmission Between; Inverter And Control Pc Board - Daikin CMSQ200A7W1B Service Manual

SiBE28-805
LC
3.34 " " Outdoor Unit: Malfunction of Transmission Between

Inverter and Control PC Board

LC
Remote
Controller
Display
Applicable CMSQ200A7, 250A7
Models
Method of Check the communication state between inverter PC board and control PC board by micro-
computer.
Malfunction
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
Faulty fan inverter
Incorrect type of fan inverter
Faulty compressor
Faulty fan motor
Troubleshooting by Indication on the Remote Controller
183