34
OPERATION
PREHEAT
DEFROST
FAN
AUTO
HIGH
MED
LOW
TEMP
LOUVER
UNIT MANUAL
MODE
FAN ONLY
COOL
HEAT
AUTO
88
88: 88
TIMER
CONT.
OFF ON
ADDRESS
H
M
˚
C
MODE
CHECK
FILTER
TIMER ADJUST
+
-
ON/OFF
NETWORK
REMOTE CONTROLLER
CENTRAL
STANDBY
FILTER
CHECK
Fault code display
Self-diagnostic function
The remote controller, Multi Controller and outdoor unit have the facility to display fault codes which are
used to determine any malfunction of the system.
• The remote controller is provided with a “check” button and a check display.
• The Multi Controllers and outdoor units are provided with display switches and LED displays.
Initially malfunctions can be identified from the remote controller check display.
Details of the Multi Controller and outdoor unit malfunctions can be determined from their control boards.
(Multi Controller malfunctions are also displayed on the outdoor unit interface control board).
Fault code identification
When a malfunction has been identified, do not reset the system. Press the “CHECK” button on the remote
controller and observe the display.
The location and cause of the malfunction can be determined from the fault code.
“CHECK”
Flashes when
phases are rotated.
Reset button
• Pressing the reset button with a pin will clear the memory.
Check button
• Pressing for 1 second will display fault codes.
• Pressing for 5 seconds will reset the indoor unit microprocessor.
• Pressing for 10 seconds will clear only the fault codes.
“STANDBY” displayed
• The total capacity rank settings of indoor units connected exceeds
the allowable level, or an indoor capacity rank is set at “0” (Multi
Controller).
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