Panasonic CU-4E24RBU Service Manual

Also see for CU-3E19RBU: Operating instructions Service manual Service manual Service manual Installation manual

237. Electronic Circuit Diagram7.1 CU-3E19RBU+BLKBLK123WWWWBLKY/GY/GR 1CN-COM(WHITE)FUSE 401(30A 250V)ACL1(BLACK)ACN1(WHITE)FG1(GREEN) FG2(GREEN)CN-BLK (BLACK) RECTIFICATIONCIRCUITRECTIFICATIONCIRCUITSWITCHINGPOWER SUPPLYCIRCUITELECTRONIC CONTROLLER(MAIN)ELECTRONIC CONTROLLER(NOISE FILTER)ELECTRONIC CONTROLLER(DISPLAY)PFCCIRCUITAC-WHT(WHITE)Q10UWV(RED)(YELLOW)(BLUE)PNUVWWBRRRR13 31 1111101111442444117CN-FM1(WHITE)CN-PSW1(BLUE)CN-TH3(WHITE)CN-TH4(WHITE)(WHITE)CN-TH1(YELLOW)CN-TH2ttttttttttFAN MOTORHIGH PRESSURE SW.LIQUID PIPE TEMP. SENSOR (UNIT A) (THERMISTOR)LIQUID PIPE TEMP. SENSOR (UNIT B) (THERMISTOR)LIQUID PIPE TEMP. SENSOR (UNIT C) (THERMISTOR) (5K, 3900)GAS PIPE TEMP. SENSOR (UNIT A) (THERMISTOR)GAS PIPE TEMP. SENSOR (UNIT B) (THERMISTOR)GAS PIPE TEMP. SENSOR (UNIT C) (THERMISTOR) (5K, 3900)OUTDOOR TEMP. SENSOR (THERMISTOR) (15K, 3950)HEAT EXCHANGER TEMP. SENSOR (THERMISTOR) (5K, 3900)DEFROST TEMP. SENSOR (THERMISTOR) (5K, 3900)MBLKBYYRCONNECTORWHITECOMPRESSORMS3~BYAC-BLK(BLACK)FUSE 2(T2.5A L250V)FUSE 1(T3.15A L250V)CN-DATA(WHITE) CN-DATA(WHITE)CN-WHT(WHITE)WBLKBLKREACTORREACTORL2-O(BLK)L1-O(BLK)L2-I(GRY)L1-I(GRY)BLKBLKGRYGRYGRYGRYBLKCONNECTORWHITE1 WWWWWWWWW19 9NOISE FILTERCIRCUITCOMMUNICATIONCIRCUITGGCONTROL BOARDCABINET SIDE PLATE35791WWWWWWWWWWWWWWWWWWWWW11611711331 18 67CN-DISP1(WHITE)CN-DISP1(WHITE)CN-DISP2(WHITE)CN-NMODE(YELLOW)CN-NMODE1(WHITE)CN-HOT(BLUE)(WHITE)CN-EV1(YELLOW)CN-EV2 16 (BLUE)CN-EV3 12MMM(WHITE)CN-DISDISCHARGE TEMP.SENSOR (THERMISTOR)(50K, 3950)UNIT CELECTRO-MAGNETIC COIL(EXPANSION VALVE)UNIT BELECTRO-MAGNETIC COIL(EXPANSION VALVE)UNIT AELECTRO-MAGNETIC COIL(EXPANSION VALVE)ELECTRO MAGNETICCOIL(4-WAY VALVE)HEATER CN-HT(BLACK)RY-HOTRY-HT148BYL1L2TERMINAL BOARDTERMINAL BOARDTO INDOOR UNIT A123BLKTO INDOOR UNIT B123TO INDOOR UNIT CSINGLE PHASEPOWER SUPPLYAC 208/230V 60Hz13Vbec5V5V5V5V5V13Vbce13Vbcebcebcebce15V_2bce5V5V5V5V13V13V5V5V5V5VPUMP DOWNSW11234OPERATION TESTSW21234WIRING CHECKSW3SW4 POWER SAVEON OFF123 2 134SW5 PRIORITY MODECOOL ONLYGREEN LED1*JP1ON OFF3 2 1GREEN LED2GREEN LED3GREEN LED4GREEN LED5GREEN LED65V10203040506070Temperature °C (°F)Resistance (K)Compressor Temp. Sensor(Thermistor) Charateristics010203040506070Temperature °C (°F)Resistance (K)Sensor (Thermistor)CharacteristicsOutdoor Air SensorOutdoor Heat ExchangerSensor-10(40) 0(32) 10(50) 20(68) 30(86) 40(104) 50(122)20(68)40(104)60(140)80(176)100(212)120(248)140(284)