Troubleshooting - Carrier 40VMU012 Installation And Maintenance Instructions Manual

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.
ERROR CODE
Setting Temperature
"--"
"--"
[NO ERROR] "--"
"--"
Setting Temperature
Setting Temperature
ERROR
LEGEND
EEPROM — Electronically Erasable Programmable Read-only
Memory
EEV — Electronic Expansion Valve
MDC — Multiport Distribution Controller
DEFROST/
FAN LIGHT
OPERATION
LIGHT
Fig. 30 — LED Display Panel
Table 8 — LED Display Indicators
LED DISPLAY
Starting
Shutdown
Standby
Timing ON
Timing OFF
System Defrost ON
System Defrost OFF
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
ALARM LIGHT
TIMER LIGHT INFO BUTTON
MODE / STATUS
16
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