Troubleshooting by Indication on the Remote Controller
" Malfunction of Transmission between Indoor Units
and Outdoor Units in the Same System
All indoor unit models
Detect malfunction signal for the other indoor units within the circuit by outdoor unit PCB.
When the malfunction decision is made on any other indoor unit within the system.
Malfunction of transmission between indoor and outdoor unit
Malfunction of electronic expansion valve in indoor unit of other system
Defect of PCB of indoor unit in other system
Improper connection of transmission wiring between indoor and outdoor unit
Be sure to turn off the power switch before connecting or disconnecting the connector, or parts may be damaged.
Turn on all indoor units.
has been displayed for 2
All the units are
minutes or more.
Re-diagnose by display after
passage of 2 minutes or more.
The indoor unit PCB indicated
by the malfunction code
Check for the indoor unit of
other system, and then conduct
troubleshooting by diagnosis
according to the malfunction