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SiUS091601E
Check
Service Diagnosis
106
Step 3
Activate power transistor test operation from the indoor unit.
(1) Turn the power on.
(2) Press the center of
TEMP
button and
OFF
button on the remote controller at the same time.
(3) Select
T
with
TEMP
or
TEMP
button.
(4) Press
FAN
button.
(5) Press
FAN ONLY
button to start the power transistor test operation.
Diagnose method (Diagnose according to 6 LEDs lighting status.)
(1) If all the LEDs are lit uniformly, the compressor is defective.
→
Replace the compressor.
(2) If the LEDs are not lit uniformly, check the power module.
→
Refer to
Check No.22
.
(3) If NG in
Check No.22
, replace the power module.
(Replace the main PCB. The power module is united with the main PCB.)
If OK in
Check No.22
, check if there is any solder cracking on the PCB.
(4) If any solder cracking is found, replace the PCB or repair the soldered section.
If there is no solder cracking, replace the PCB.
Caution
(1) When the output frequency is low, the LEDs blink slowly. As the output frequency increases, the
LEDs blink quicker. (The LEDs look like they are lit.)
(2) On completion of the inverter analyzer diagnosis, be sure to re-crimp the FASTON terminals.
Otherwise, the terminals may be burned due to loosening.
OFF
button
(R23157)
(R15292)
Direction of crimp
FASTON terminal
This size is shortened
by the crimp.
Содержание FTX09NMVJU
Страница 12: ...SiUS091601E 1 List of Functions Part 1 List of Functions 1 Functions 2...
Страница 15: ...SiUS091601E Specifications 4 Part 2 Specifications 1 Specifications 5...
Страница 65: ...SiUS091601E Remote Controller 54 Part 5 Remote Controller 1 FTX Series 55 2 FVXS Series 57...
Страница 121: ...SiUS091601E Check Service Diagnosis 110 12 class 15 class Multimeter R23024 R20701 1 2 3 4 Multimeter...
Страница 144: ...Revision History Month Year Version Revised contents 02 2016 SiUS091601E First edition...