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16
TROUBLESHOOTING
Figure 30 shows the LED display panel. See Table 8 for a
summary of display indicators. Table 9 lists problems, possible
causes, and possible solutions.
Table 8 — LED Display Indicators
LEGEND
ERROR CODE
LED DISPLAY
MODE / STATUS
[NO ERROR]
Setting Temperature
Starting
“--”
Shutdown
“--”
Standby
“--”
Timing ON
“--”
Timing OFF
Setting Temperature
System Defrost ON
Setting Temperature
System Defrost OFF
ERROR
dd
Heating / Cooling Mode Conflict Error
E1
Communication Error Between Indoor and Outdoor Unit
E2
Check Indoor Ambient Temperature Sensor (T1/T0)
E4
Check Evaporator Temperature Sensor (T2B)
E5
Check Evaporator Outlet Temperature Sensor (T2A)
E6
Check DC Fan Motor
E7
EEPROM Error (Data Storage)
E9
Communication Error Between Indoor Unit and Controller
Eb
EEV Error
Ed
Outdoor Unit Error
EE
Condensate Error
FE
No Address When Power ON For First Time
UU
MDC Error In Auto System-Check Mode
DEFRO
S
T/
FAN LIGHT
ALARM LIGHT
OPERATION
LIGHT
TIMER LIGHT
INFO BUTTON
a
40-1
8
7
8
Fig. 30 — LED Display Panel
EEPROM —
Electronically Erasable Programmable Read-only
Memory
EEV
—
Electronic Expansion Valve
MDC
—
Multiport Distribution Controller
Summary of Contents for 40VMU012 Series
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