Troubleshooting With The Led On The Skyair Indoor Unit - Daikin E-Series Service Manual

Caution for Diagnosis
Caution: Operation stops suddenly. (Operation lamp blinks.)
Cause of above trouble could be "Operation mode butting".
Check followings;
Are the operation modes all the same for indoor units connected to Multi system outdoor unit?
If not set all indoor units to the same operation mode and confirm that the operation lamp is not
blinking.
Moreover, when the operation mode is in "Auto", set all indoor unit operation mode to "Cool" or
"Heat" and check again if the operation lamp is normal.
If the lamp stops blinking after the above steps, there is no malfunction.
★
mode is set later. (The first set operation mode has priority.)
1.2

Troubleshooting with the LED on the SkyAir Indoor Unit

Foreword Troubleshooting can be carried out by service monitor LED (green). (Blinks when normal)
4
Note: 1. When the INSPECTION/TEST button of remote controller is pushed, INSPECTION display
2. In the INSPECTION mode, when the ON/OFF button is pushed and held for 5 seconds or
3. Operation halts due to malfunction depending on the model or condition.
4. The wiring between indoor and outdoor unit may be incorrect or disconnected. Before
5. Troubleshoot by turning off the power supply for a minimum of 5 seconds, turning it back on,
302
Operation stops and operation lamp blinks only for indoor unit which the different operation
: LED on 3 : LED off 5
Microcomputer
Normal Monitor
HAP
Incorrect wiring between indoor and outdoor unit
5
If outdoor unit's HAP is off, proceed outdoor unit's trouble shooting. If outdoor
unit's HAP blinks, failure of wiring or indoor or outdoor unit P.C board ass'y.
(Note 4)
Failure of indoor unit PC board ass'y (Note 5)
4
Malfunction of power supply or failure of PC board ass'y or broken
3
transmission wire between indoor and outdoor unit. (Note 5)
blinks entering INSPECTION mode.
more, the aforementioned malfunctioning history display is off. In this case, after the
malfunction code blinks 2 times, the code display turns to "00" (=Normal) and the unit No.
turns to "0". The INSPECTION mode automatically switches to the normal mode (set
temperature display).
performing the previously described troubleshooting, check the wiring. If the outdoor unit is
inverter unit, the outdoor unit fuse may be blown.
and then rechecking the LED display.
: LED blinks — : No connection with troubleshooting
Contents/Processing
SiAU18-715
Troubleshooting