Self-Diagnosis By Led; Self-Diagnosis With The Led On The Indoor Unit; Self-Diagnosis With The Led On The Outdoor Unit - Daikin Sky Air B-Series R-410A Service Manual

Self-Diagnosis by LED

3. Self-Diagnosis by LED

3.1

Self-Diagnosis with the LED on the Indoor Unit

Foreword Troubleshooting can be carried out by service monitor LED (green). (Blinks when normal)
4
Notes: 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,
3.2

Self-Diagnosis with the LED on the Outdoor Unit

The outdoor unit has one green LED (LED A) on the PCB. The flashing green LED indicates
normal condition of microcomputer operation.
Outdoor Unit (The figure shows 50/60 class model.)
138
3 5
: LED on : LED off
Microcomputer
Normal Monitor
HAP New Refrigerant (R410A)
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
Si21-205
Troubleshooting