Inverter And Control Pc Board; And Control Pc Board - Daikin REYQ72 Serveice Manual

SiUS39-602
2.38 " LC " Outdoor Unit:

Inverter and Control PC Board

LC
Remote
Controller
Display
Applicable REYQ72M, 96M
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 Transmission between
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
169