Troubleshooting By Indication On The Unified On/Off Controller; Operation Lamp Blinks - Panasonic U-4..6ML5XPQ Service Manual

Troubleshooting by Indication on the Unified ON/OFF Controller

5. Troubleshooting by Indication on the Unified ON/
OFF Controller
5.1

Operation Lamp Blinks

Remote

Operation lamp blinks

Controller
Display
Applicable All models of indoor units
Unified ON/OFF controller
Models
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
212
Malfunction of transmission between optional controller and indoor unit
Connector for setting master controller is disconnected
Defect of unified ON/OFF controller
Defect of indoor unit PC board
Malfunction of air conditioner
Urban Multi ML5 · Mini UM · Heat Pump
Troubleshooting