SiUS121827E
Check
Part 6 Service Diagnosis
239
Caution
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 (IPM1) 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.
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.
(R15292)
Direction of crimp
FASTON terminal
This size is shortened
by the crimp.
Содержание 4MXL-T Series
Страница 107: ...SiUS121827E SA Indoor Unit Functions Part 4 Functions and Control 101 FFQ Series Emergency operation switch R24077 ...
Страница 182: ...Troubleshooting for RA Indoor Unit SiUS121827E 176 Part 6 Service Diagnosis Reference Check No 11 Refer to P 235 ...
Страница 190: ...Troubleshooting for SA Indoor Unit SiUS121827E 184 Part 6 Service Diagnosis Reference Check No 02 Refer to P 233 ...
Страница 249: ...SiUS121827E Check Part 6 Service Diagnosis 243 R6000583 1 2 3 4 Multimeter Front side Rear side ...
Страница 288: ...Piping Diagrams SiUS121827E 282 Part 8 Appendix 1 2 Outdoor Unit 5MXS48TVJU 4MXL36TVJU 3D117817 3D118311 ...
Страница 298: ...Operation Limit SiUS121827E 292 Part 8 Appendix 4 Operation Limit 5MXS48TVJU 4MXL36TVJU 3D048149D 3D101428 ...