Transmission System Abnormality (Between Control And Inverter Pcb) - Daikin RZQG71~140L7V1B Service Manual

ESIE12-06
4.26 Transmission System Abnormality (between Control and
Inverter PCB)
LC
Remote
Controller
Display
Applicable
RZQG
Models
Method of Error
Check whether transmission between control and inverter PCB is carried out normally.
Detection
Error Decision
When the transmission is not carried out in a specified period of time or longer
Conditions
Supposed  Defective outdoor fan motor
Causes  Defective of fan motor connector contact
 Defective control and inverter PCB
 External factor (Noise, etc.)
Troubleshooting
Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is the fan motor
connector connected?
YES
Disconnect the fan motor connector,
and turn ON again.
E7
" " is displayed?
LC
(" " is not displayed?)
NO
Service Diagnosis
NO
YES
Troubleshooting by Remote Controller
Connect the connector.
Replace the fan motor.
Inverter transmission
defective due to the error
of fan motor.
Replace the outdoor PCB
(A1P).
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