18
TROUBLESHOOTING
Figure 34 shows the LED display panel on the indoor unit. See Table 5 for a summary of display indicators. Table 6 lists problems,
possible causes, and possible solutions.
Table 5 — LED Display Indicators
ERROR CODE
LED DISPLAY
MODE/STATUS
[NO ERROR]
Operation Light ON
Starting
None
Shutdown
Operation Light Flashing
Standby
Timer Light ON
Timing ON
Timer Light OFF
Timing OFF
Operation and Defrost / Fan Light ON
System Defrost ON
Operation and Defrost / Fan Light OFF
System Defrost OFF
Operation Light ON
Only fan
dd
None
Heating / Cooling Mode Conflict
E1
None
Communication Error Between Indoor and Outdoor Unit
E2
None
Check Indoor Ambient Temperature Sensor (T1)
E4
None
Check Evaporator Temperature Sensor (T2B)
E5
None
Check Evaporator Outlet Temperature Sensor (T2A)
E6
None
Check DC Fan Motor
E7
None
EEPROM Error (Data Storage)
E9
None
Communication Error Between Indoor Unit and Controller
Eb
None
EEV Error
Ed
None
Outdoor Unit Error
EE
None
Condensate Error
FE
None
No Address When Power ON For First Time
UU
None
MDC Error In Auto System-Check Mode
LEGEND
EEPROM
—
Electronically Erasable Programmable Read-only Memory
EEV
—
Electronic Expansion Valve
MDC
—
Multiport Distribution Controller
Fig. 34 — LED Display Panel
a40-1873
MANUAL OPERATION TIMER DEF./FAN ALARM
