Hisense 88FZBpC, Руководство по обслуживанию, Страница: 34 / 37

Page 33 of 37
Fault self-test code 5
Communication
failure
Are all the lead wires
connected between indoor
and outdoor unit?
no
Connect the indoor and
outdoor unit again
according to the wiring
diagram
yes
Power indicator(LED) of
outdoor control board(PCB)
light up?
yes
Open air-conditioners
after replacing the
outdoor control board
Air-conditioner is
normal?
Outdoor control board
fault and replace it
yes
no
Indoor control board
fault and replace it
no
Silicon bridge rectifier has
AC Input?
yes
Silicon bridge
rectifier trouble
and replace it
no
The startup resistor input
voltage is normal?
yes
Startup resistor
isshort-circuit.
IPM, control board,
filter substrate is short-
circuit or breakdown
Is the 3.15A fuse of
outdoor PCB blown?
no
Reactor, filter board is
open-circuit?
no
yes
Startup resistor is
heating?
no
Startup resistor
fault
Is the20A fuse of
outdoor PCB blown?
no
no
The filter is open-circuit?
Is the 20A fuse blown?
Is there power input
between 1 and 2 on terminal
block of outdoor unit?
Is there power output
between 1 and 2 on terminal
block of indoor unit?
Indoor Main
Relay(RY01) has
output?
no
no
no
no
no
Indoor control board
fault and replace it
yes
Connection wire
trouble and check
yes
Connection wire
trouble and check
yes
Connection wire
trouble and check
yes
Filter Substrate Failure
and replace it
yes
Connection wire
trouble and check
The control system of outdoor
unit has short circuit trouble,
check the connection
wire,outdoor control
board,Silicon Bridge, IPM,
rectifier and electrolyse
capacitor
Replace the
trouble unit
Replace the
trouble unit
yes
Replace the
trouble unit
yes
Connection wire
trouble and check
Outdoor short-circuit fault. The
cable, control board, IPM,
electrolytic capacitors and other cells
are short-circuit or breakdown?
Replace the
trouble unit
yes
Outdoor control board
fault and replace it
Outdoor control board is
breakdown or short-circuit ？
yes
Replace the IPM
board and the fuse.
no
Air-conditioner is
normal?
Indoor control board
fault and replace it
yes
no
Display board fault
and replace it
The IPM board is
breakdown or short-
circuit ？
yes
Normal protection
and replace fuse
no