Troubleshooting - Carrier 40VMA Series Installation And Maintenance Instructions Manual

TROUBLESHOOTING

Figure 38 shows the indoor unit's LED display panel. See Table 5 for a summary of display indicators. Table 6 lists problems, possible
causes, and possible solutions.
ERROR CODE
[NO ERROR]
dd
E1
E2
E3
E4
E5
E6
E7
E9
Eb
Ed
EE
FE
UU
LEGEND
EEPROM — Electronically Erasable Programmable Read-only Memory
EEV — Electronic Expansion Valve
MDC — Multi-port Distribution Controller
Fig. 38 —LED Display Panel
Table 5 —LED Display Indicators
LED DISPLAY
Operation Light ON
None
Operating Light Flashing
Timer Light ON
Timer Light OFF
Operation and Defrost/Fan Light ON
Operation and Defrost/Fan Light OFF
Operation Light ON
None
System Defrost ON
System Defrost OFF
Heating/Cooling Mode Conflict
Communication Error Between Indoor and Outdoor Unit
Check Indoor Ambient Temperature Sensor (T1)
Check Room Temperature Sensor (TA)
Check Evaporator Temperature Sensor (T2B)
Check Evaporator Outlet Temperature Sensor (T2A)
Check DC Fan Motor
EEPROM Error (Data Storage)
Communication Error Between Indoor Unit and Controller
No Address When Power ON For First Time
MDC Error In Auto System-Check Mode
23
MODE/STATUS
Starting
Shutdown
Standby
Timing ON
Timing OFF
Only FAN
EEV Error
Outdoor Unit Error
Condensate Error