Daikin G-Series Service Manual page 164

Check
Step 3
20/25/35/50 class: Activate inverter test operation from the outdoor unit.
42 class: Activate inverter test operation from indoor unit.
(1) When all the LEDs are lit uniformly, the compressor is defective.
(2) When the LEDs are not lit uniformly, check the power module.
(3) If NG in Check No.13, replace the power module (control PCB).
(4) If any solder cracking is found, replace the filter PCB or repair the soldered section.
Caution
(1) When the output frequency is low, the LEDs blink slowly. As the output frequency increases,
(2) On completion of diagnose by the inverter checker, be sure to re-crimp the FASTON
153
1) Press the forced cooling operation ON/OFF button for 5 seconds.
(Refer to page 289 for the position.)
-> Inverter test operation starts.
1) Turn the power on.
2) Select FAN operation with the [MODE] button on the remote controller.
3) Press the 3 buttons (TEMP , TEMP , MODE) simultaneously.
00
-> is displayed with the figure of ten's place blinking.
4) Press the [MODE] button.
00
-> is displayed with the figure of one's place blinking.
5) Press the [MODE] button.
T
-> is displayed.
6) Press the [ON/OFF] button.
-> Inverter test operation starts.
Diagnose method (Diagnose according to 6 LEDs lighting status.)
→
Replace the compressor.
→
Refer to Check No.13.
If OK in Check No.13, check if there is any solder cracking on the filter PCB.
If the filter PCB is OK, replace the control PCB.
the LEDs blink quicker. (The LEDs look like they are lit.)
terminals. Otherwise, the terminals may be burned due to loosening.
Direction of crimp
FASTON terminal
SiBE04-808_B
This size is shortened
by "crimp".
(R5161)
Service Diagnosis