Daikin GYEQ20AN Service Manual page 179

SiAUY361411EA
44
Indoor Unit and Remote Control Mismatch
Sub-code 2: The number of connected remote control units does not match the number of supported remote
Description
of the failure
Sub-code 5: Unable to receive signals from the ignition CPU when the power is turned ON.
CPU mismatch; indoor/outdoor unit connection failure; communication line connection failure;
Possible
causes remote controller connection failure; software version mismatch; outdoor unit mismatch
of the failure
Flow chart
Sub Code 2
Does No. Of Connected
Remote Controllers Match Supported
No. Of Remote Controllers?
YES
Check whether
communication cables
between outdoor and Indoor
units connected properly.
Sub Code 5
Are Main Circuit Board's CN10
And Power Supply Circuit Board's
CN107 Connected Properly?
YES
Remove And Reinsert
Connectors, Then Turn ON
Power Again.
Troubleshooting
control units specific to the model.
NO
Connect Correct No. Of
Remote Controllers.
NO
Correct Connection.
Flow Charts for Troubleshooting
025912-02EN02
Error
UA
code
168