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18.4.21 F90 (Power Factor Correction Protection)
Malfunction Decision Conditions
To maintain DC voltage level supply to power transistor.
To detect high DC voltage level after rectification.
Malfunction Caused
During startup and operation of cooling and heating, when Power Factor Correction (PFC) protection circuitry at
the outdoor unit main PCB senses abnormal DC voltage level for power transistors.
When DC voltage detected is LOW, transistor switching will turn ON by controller to push-up the DC level.
When DC voltage detected is HIGH (391Vdc – 425Vdc), active LOW signal will send by the controller to turn OFF
relay RY-C.
Troubleshooting
Содержание CS-TZ60TKEW
Страница 25: ...25 8 Block Diagram 8 1 Indoor Unit FUSE 301 TEMP FUSE SC U 1 2 3 M INDOOR UNIT ...
Страница 32: ...32 11 1 2 Indicator Printed Circuit Board CN DISP LED206 LED205 LED203 LED201 LED204 LED202 ...
Страница 33: ...33 11 2 Outdoor Unit CN STM1 CN MTR1 CN MTR2 CN TANK CN TH1 CN HOT AC BLK DATA AC WHT POWER TRANSISTOR IPM ...
Страница 122: ...122 19 1 5 To Remove Control Board Figure 6 19 1 6 To Remove Cross Flow Fan and Indoor Fan Motor Figure 7 Figure 8 ...
Страница 123: ...123 Figure 9 Figure 10 ...