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Si12-619A
Check
Service Diagnosis
267
6.1.11
Capacitor Voltage Check
Check No.12
Before this checking, be sure to check the main circuit for short-circuit.
Checking the capacitor voltage
z
With the circuit breaker still on, measure the voltage according to the drawing of the model in
question. Be careful never to touch any live parts.
E series (68-75 class), D series
E series (50-58 class, 80-100 class)
6.1.12
Power Transistor Check
Check No.13
Checking the power transistor
z
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 supply
voltage is below 50 V using the tester.
z
For the UVW, make measurements at the Faston terminal on the board or the relay
connector.
MULTIMETER
(DC. VOLTAGE RANGE)
REACTOR LEAD WIRE
COMPRESSOR LEAD WIRE
OL LEAD WIRE
THERMISTOR LEAD WIRE
FAN MOTOR LEAD WIRE
(R6335)
(ROOM-D)
(ROOM-C)
(ROOM-B)
(ROOM-A)
ELECTRONIC EXPANSION VALVE COIL LEAD WIRE
THERMISTOR LEAD WIRE
(GAS PIPE)
THERMISTOR LEAD WIRE
(LIQUID PIPE)
THERMISTOR LEAD WIRE
(GAS PIPE)
THERMISTOR LEAD WIRE
(LIQUID PIPE)
REVERSING SOLENOID
VALVE LEAD WIRE
MULTIMETER
(DC. VOLTAGE RANGE)
REACTOR LEAD WIRE
COMPRESSOR LEAD WIRE
OL LEAD WIRE
THERMISTOR LEAD WIRE
FAN MOTOR LEAD WIRE
(R6334)
(ROOM-D)
(ROOM-C)
(ROOM-B)
(ROOM-A)
ELECTRONIC EXPANSION VALVE COIL LEAD WIRE
Tester's negative terminal
Power transistor
(+)
UVW
Power transistor
(–)
UVW
Tester's positive terminal
UVW
Power transistor
(+)
UVW
Power transistor
(–)
Normal resistance
Several kohms to several Mohms
Abnormal resistance
0 or
∞
Содержание 3MKS50DVM
Страница 1: ...Si12 619A Applied Models Inverter Multi Cooling Only Inverter Multi Heat Pump D Series E Series ...
Страница 13: ...Introduction Si12 619A xii ...
Страница 89: ...Printed Circuit Board Connector Wiring Diagram Si12 619A 76 Printed Circuit Board Connector Wiring Diagram ...
Страница 131: ...Control Specification Si12 619A 118 Function and Control ...
Страница 146: ...Si12 619A Instruction Operation Manual 133 Duct Connected Type Names of parts Indoor Unit 3 6 8 9 10 7 1 4 5 2 ...
Страница 213: ...Instruction Si12 619A 200 Operation Manual ...
Страница 283: ...Check Si12 619A 270 Service Diagnosis ...
Страница 302: ...Si12 619A Outdoor Unit E Series 50 52 58 Class Removal Procedure 289 Step Procedure Points ...
Страница 385: ...Wiring Diagrams Si12 619A 372 Appendix FTK X S50 60 71FVLT ...
Страница 399: ...Si12 619A vi Index ...