Troubleshooting - Carrier 40VMI Series Installation And Maintenance Instructions Manual

TROUBLESHOOTING

Fig. 42 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.
TYPE
[NO ERROR]
ERROR
LEGEND:
ACB — Auxiliary Control Board
EEPROM — Electronically Erasable Programmable Read-only Memory
EEV — Electronic Expansion Valve
MDC — Multiport Distribution Controller
OPERATION TIMER
Fig. 42 —LED Display Panel
Table 5 — Display Indicators
DIGITAL DISPLAY
Setting Temperature
"--"
"--"
"--"
"--"
Setting Temperature
Setting Temperature
Room Temperature
dd
E1
E2
E4
E5
E6
E7
E9
Eb
Ed
EE
FE
UU
DEF./FAN ALARM
MODE/STATUS
Starting
Shutdown
Standby
Timing ON
Timing OFF
System Defrost ON
System Defrost OFF
Only Fan
Heating / Cooling Mode Conflict Error
Communication Error Between Indoor and Outdoor Unit
Check Indoor Temperature Sensor (T1)
Check Evaporator Outlet Temperature Sensor (T2B)
Check Evaporator Temperature Sensor (T2A)
Check DC Fan
EEPROM Error (Data Storage)
Communication Error Between Indoor Unit and Wired Controller.
EEV Error
Outdoor Unit Error
Condensate Overflow
No Address When Powered ON For First Time
MDC In Auto System-Check Mode.
20
A40-1716
a40-1842