Si18-525B
Troubleshooting for Outdoor Unit
Troubleshooting
385
Troubleshooting
(Q0439)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
The
transmission
wiring between the
outdoor unit PCB
inverter unit is
disconnected.
YES
Fix the disconnection and turn on
again.
Connect transmission wiring and
turn on again.
NO
YES
The voltage
between red and
white of X1A on the inverter
unit is the power supply
voltage.
Check the noise filter (Z1F) for
disconnection, and check the
power supply wiring or the inverter
PCB.
Replace inverter PCB.
When the LC malfunction occur
again, replace control PCB.
NO
NO
YES
NO
Are the
connectors
between the main
PC board (A1P) and
inverter PCB
(A2P) connected
securely?
The
microcomputer
monitor (green) on
the inverter PCB
is blinking.
Defect of outdoor main PCB or
defect of inverter PCB.
YES
Содержание D-Series
Страница 1: ...Si18 525B Applied Models Super Multi Plus Cooling only Super Multi Plus Heat Pump D Series ...
Страница 33: ...List of Functions Si18 525B 20 List of Functions ...
Страница 34: ...Si18 525B Specifications 21 Part 2 Specifications 1 Specifications 22 1 1 Cooling Only 22 1 2 Heat Pump 42 ...
Страница 71: ...Specifications Si18 525B 58 Specifications ...
Страница 107: ...Printed Circuit Board Connector Wiring Diagram Si18 525B 94 Printed Circuit Board Connector Wiring Diagram ...
Страница 117: ...Refrigerant Flow for Each Operation Mode Si18 525B 104 Refrigerant Circuit ...
Страница 171: ...Indoor Unit SkyAir Models Si18 525B 158 Function ...
Страница 207: ...Test Operation and Field Setting for RA Indoor Unit Si18 525B 194 Test Operation ...
Страница 336: ...Si18 525B Service Check Function Troubleshooting 323 ...
Страница 443: ...BP Unit Si18 525B 430 Removal Procedure The clamps are to be kept in stock Step Procedure Points Clamps Q0529 ...
Страница 469: ...Wiring Diagrams Si18 525B 456 Appendix ...
Страница 475: ...Si18 525B vi Index ...