Troubleshooting; Indoor Unit Error Display - Carrier xpower blue II 42KCL109313G Service Manual

setting temperature stops rising and indoor fan is fixed as low speed.
8.4.7.3 Timer setting is available
8.4.7.4 When user uses timer off function in sleep mode (or sleep function in timer off mode), if the
timing is less than 7 hours, sleep function will be cancelled when reaching the setting time. If the timing
is more than 7 hours, the machine will not stop until reaches the setting time in sleep mode.
8.4.8 Auto-Restart function
The indoor unit is equipped with auto-restart function, which is carried out through an auto-restart
module. In case of a sudden power failure, the module memorizes the setting conditions before the
power failure. The unit will resume the previous operation setting (not including swing function)
automatically after 3 minutes when power returns.
If the memorization condition is forced cooling mode, the unit will run in cooling mode for 30 minutes
and turn to auto mode as 24
If AC is off before power off and AC is required to start up now, the compressor will have 1 minute
delay when power on. Other conditions, the compressor will have 3 minutes delay when restarts.

9. Troubleshooting

9.1 Indoor Unit Error Display

Display
E0
E1
E2
E3
E5
E6
P0
P1
P2
P4
Note: E4 & P3: Reserved function.
℃
setting temp.
LED STATUS
EEPROM parameter error
Indoor unit and outdoor unit communication protection
Zero-crossing signal error
Indoor fan speed has been out of control
Open or short circuit of outdoor temperature sensor or outdoor unit EEPROM
parameter error
Open or short circuit of room or evaporator coil temperature sensor
IPM malfunction or IGBT over-strong current protection
Over voltage or too low voltage protection
Temperature protection of compressor top.
Inverter compressor drive error
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