Daikin D-Series Service Manual

Contents

Daikin D-Series Service Manual Manual pdf 280 page image

Si12-619A CheckService Diagnosis 2676.1.11 Capacitor Voltage CheckCheck No.12 Before this checking, be sure to check the main circuit for short-circuit. Checking the capacitor voltagez With the circuit breaker still on, measure the voltage according to the drawing of the model inquestion. Be careful never to touch any live parts.E series (68-75 class), D seriesE series (50-58 class, 80-100 class)6.1.12 Power Transistor CheckCheck No.13 Checking the power transistorz Never touch any live parts for at least 10 minutes after turning off the circuit breaker.z If unavoidably necessary to touch a live part, make sure the power transistor's supplyvoltage is below 50 V using the tester.z For the UVW, make measurements at the Faston terminal on the board or the relayconnector.MULTIMETER(DC. VOLTAGE RANGE) REACTOR LEAD WIRECOMPRESSOR LEAD WIREOL LEAD WIRETHERMISTOR LEAD WIREFAN MOTOR LEAD WIRE(R6335)(ROOM-D)(ROOM-C)(ROOM-B)(ROOM-A)ELECTRONIC EXPANSION VALVE COIL LEAD WIRETHERMISTOR LEAD WIRE(GAS PIPE)THERMISTOR LEAD WIRE(LIQUID PIPE)THERMISTOR LEAD WIRE(GAS PIPE)THERMISTOR LEAD WIRE(LIQUID PIPE)REVERSING SOLENOIDVALVE LEAD WIREMULTIMETER(DC. VOLTAGE RANGE) REACTOR LEAD WIRE COMPRESSOR LEAD WIREOL LEAD WIRETHERMISTOR LEAD WIREFAN MOTOR LEAD WIRE(R6334)(ROOM-D)(ROOM-C)(ROOM-B)(ROOM-A)ELECTRONIC EXPANSION VALVE COIL LEAD WIRETester's negative terminal Power transistor(+) UVW Power transistor(–) UVWTester's positive terminal UVW Power transistor(+) UVW Power transistor(–)Normal resistance Several kohms to several MohmsAbnormal resistance 0 or ∞