Daikin K-Series Service Manual page 98

SiBE061121.book Page 88 Monday, April 25, 2011 3:21 PM
Troubleshooting
4.9.2 50 Class
E1
Remote
Controller
Display
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Troubleshooting
88
Detection within the program of the microcomputer
The program of the microcomputer is in abnormal running order.
Defective outdoor unit PCB
Noise
Momentary fall of voltage
Momentary power failure
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Turn on the power again.
Error again?
NO
Check to see if the unit is
grounded.
Grounded?
YES
YES
NO
SiBE061121
Replace the outdoor unit
PCB.
Ground the system.
The cause can be external
factors other than
malfunction.
Investigate the cause of
noise.
(R7183)
Service Diagnosis