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11 .4.2 EEPR O M abnormal
Indoor Display
Method of
malfunction
The Data detected by the EEPROM are used to determine MCU
detection
Malfunction
when the data of EEPROM is error or the EEPROM is damaged
detection
conditions
Supposed
causes
Troubleshooting
11 .4.3 Indoo r A C fa n m otor malfunct ion
Indoor Display
Method of
malfunction
detection
Malfunction
detection
conditions
Supposed
causes
Troubleshooting
E4: indoor EEPROM error
Faulty EEPROM data
Faulty EEPROM
Faulty PCB
* Caution Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Replace the indoor or outdoor mainboard
E14
The fan speed detected by the Hall IC during fan motor operation is used abnormal fan
motor operation
When there is no fan speed feedback signal within 2 minutes
Operation halt due to breaking of wire inside the fan motor.
Fan motor overheat protection
Operation halt due to breaking of the fan motor lead wires
Detection error due to faulty indoor unit PCB
* Caution
Be sure to turn off power switch before connect or disconnect connector,
parts damage may be occurred.
32
Service diagnosis
or else
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