Capacity Setting Abnormality - Daikin ZQG71~140L7V1B Service Manual

Troubleshooting by Remote Controller
4.7

Capacity Setting Abnormality

AJ
Remote
Controller
Display
Applicable
All models of indoor unit
Models
Method of Error
Capacity is determined according to resistance of the capacity setting adaptor and the memory
Detection inside the IC memory on the indoor unit PCB, and whether the value is normal or abnormal is
determined.
Error Decision
The error is generated when the following conditions are fulfilled:
Conditions
1
2
Supposed  Defective capacity setting adaptor connection
Causes  Defective indoor unit PCB
Capacity setting
The capacity is set in the PCB's memory IC. A capacity setting adaptor that matches the
adaptor capacity of the unit is required in the following case:
In case the indoor PCB installed at the factory is for some reason changed at the installation
site, the capacity will not be contained in the replacement PCB. To set the correct capacity for
the PCB you have to connect a capacity setting adaptor with the correct capacity setting to the
PCB. The capacity setting for the PCB will become the capacity setting of the adaptor because
the capacity setting adaptor has priority.
Troubleshooting
Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
The indoor
unit PCB was replaced
with a spare PCB.
YES
Was the
capacity setting
adaptor mounted when
replacing the
PCB?
NO
140
Condition Description
 The unit is in operation.
 The PCB's memory IC does not contain the capacity code.
 The capacity setting adaptor is not connected.
 The unit is in operation.
 The capacity that is set, does not exist for that unit.
NO
YES
ESIE12-06
Replace the indoor unit PCB.
Replace the indoor unit PCB.
Install a capacity setting
adaptor.
Service Diagnosis