Check
SiBE05-513A
118
Service Diagnosis
5.1.9
Power Transistor Check
Check No.13
Note:
Check to make sure that the voltage between the terminal of Power transistor (+) and (-) is
approx. 0 volt before checking power transistor.
< Measuring method >
Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the
connector, press the protrusion on the connector.
Then, follow the procedure below to measure resistance between power transistor (+) and (-)
and the U, V and W terminals of the compressor connector with a multi-tester. Evaluate the
measurement results for a pass/fail judgment.
<Power transistor check>
5.1.10 Turning Speed Pulse Input on the Outdoor Unit PCB Check
Check No.15
<Propeller fan motor>
Make sure the voltage of 270±30V is being applied.
(1) Stop the operation first and then the power off, and disconnect the connector S70.
(2) Make sure there is about DC 270 V between pins 4 and 7.
(3) With the system and the power still off, reconnect the connector S70.
(4) Make a turn of the fan motor with a hand, and make sure the pulse (0-15 V) appears twice at
pins 1 and 4.
If the fuse is blown out, the outdoor-unit fan may also be in trouble. Check the fan too.
If the voltage in Step (2) is not applied, it means the PCB is defective. Replace the PCB.
If the pulse in Step (4) is not available, it means the Hall IC is defective. Replace the DC fan
motor.If there are both the voltage (2) and the pulse (4), replace the PCB.
∗
Propeller fan motor : S70
Negative (-) terminal of
tester (positive terminal
(+) for digital tester)
Power transistor
(+)
UVW
Power transistor
(-)
UVW
Positive (+) terminal of
tester (negative terminal
(-) for digital tester)
UVW
Power transistor
(+)
UVW
Power transistor
(-)
Normal resistance
Several k
Ω
to several M
Ω
(
∗
)
Unacceptable resistance
Short (0
Ω
) or open
7
6
5
4
3
2
1
DC270V
S70
PCB
Turning speed pulse input (0-15 V)
15V
(R2859)
Содержание Inverter FLKS25BVMB
Страница 10: ...SiBE05 513A List of Functions 1 Part 1 List of Functions 1 List of Functions 2 ...
Страница 13: ...List of Functions SiBE05 513A 4 List of Functions ...
Страница 14: ...SiBE05 513A Specifications 5 Part 2 Specifications 1 Specifications 6 1 1 Cooling Only 6 1 2 Heat Pump 8 ...
Страница 19: ...Specifications SiBE05 513A 10 Specifications ...
Страница 25: ...Printed Circuit Board Connector Wiring Diagram SiBE05 513A 16 Printed Circuit Board Connector Wiring Diagram ...
Страница 55: ...Control Specification SiBE05 513A 46 Function and Control ...
Страница 83: ...Instruction SiBE05 513A 74 System Configuration ...
Страница 129: ...Check SiBE05 513A 120 Service Diagnosis ...
Страница 153: ...Outdoor Unit SiBE05 513A 144 Removal Procedure When reassembling make sure to fit the hook Step Procedure Points ...
Страница 167: ...Outdoor Unit SiBE05 513A 158 Removal Procedure ...
Страница 168: ...SiBE05 513A Others 159 Part 8 Others 1 Others 160 1 1 Test Run from the Remote Controller 160 1 2 Jumper Settings 161 ...
Страница 171: ...Others SiBE05 513A 162 Others ...
Страница 177: ...Wiring Diagrams SiBE05 513A 168 Appendix ...
Страница 181: ...SiBE05 513A iv Index ...