Troubleshooting by Remote Controller
Si20-701_B
395
NO
NO
Does "
U4
" or
"
UF
" reoccur?
YES
RZQ71B9,
RZQS71·100B
7 (1
φ
),
RZQ100~140B
8 (3
φ
):
Replace the
outdoor PCB
(A1P).
RZQ100~140C7,
RZQS125·140
C7 (1
φ
):
Replace the
outdoor unit
PCB (A1P).
YES
Replace the
indoor unit PCB.
There is no
problem with the
unit. An external
factor (noise,
etc.) other than
unit failure may
be the cause.
B
D
Does "
U4
"
error reoccur?
After turning OFF the
power supply, correctly
insert the connector of the
fan motor and then restore
the power.