Indoor Unit Pcb Abnormality - Daikin K-Series Service Manual

SiBE061121.book Page 77 Monday, April 25, 2011 3:21 PM
SiBE061121
4.2

Indoor Unit PCB Abnormality

A1
Remote
Controller
Display
Method of The system checks if the circuit works properly within the microcomputer of the indoor unit.
Malfunction
Detection
Malfunction The system cannot set the internal settings.
Decision
Conditions
Supposed
Causes
Troubleshooting
Note: Check the following connector.
Floor Standing Type
Service Diagnosis
Wrong models interconnected
Defective indoor unit PCB
Disconnection of connector
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Check the combination of the
indoor and outdoor unit.
NO
OK?
YES
Check the connection of
connectors (See Note.).
YES
OK?
NO
Correct the connection.
YES
Error repeats?
NO
Model Type
* To secure the connection,
once disconnect the connector
and then reconnect it.
Connector
Terminal board ~ Control PCB
Troubleshooting
Match the compatible
models.
Replace the indoor unit
PCB (1).
Replace the indoor unit
PCB (1).
Completed.
(R11704)
77