SiENBE18-621
Troubleshooting for Outdoor Unit
Troubleshooting
327
7.18 Malfunction of Inverter Radiating Fin Temperature Rise
Remote Control
Display
L4
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Fin temperature is detected by the thermistor of the radiation fin.
Malfunction
Decision
Conditions
When the temperature of the inverter radiation fin increases above 83°C.
Supposed
Causes
"
Actuation of fin thermal (Actuates above 83°C)
"
Defect of inverter PCB
"
Defect of fin thermistor
Troubleshooting
Caution
Be
su
re to t
u
rn off power
s
witch
b
efore connect or di
s
connect connector,
or p
a
rt
s
d
a
m
a
ge m
a
y
b
e occ
u
rred.
F
au
lty he
a
t r
a
di
a
tion of power
u
nit
• Air
su
ction opening
b
locked
• Dirty r
a
di
a
tor fin
• High o
u
tdoor temper
a
t
u
re
Contin
u
e oper
a
tion.
NO
YE
S
YE
S
Repl
a
ce the o
u
tdoor PCB (A1P)
as
well.
YE
S
The r
a
di
a
tor
fin temper
a
t
u
re i
s
su
ppo
s
ed
to h
a
ve ri
s
en to
83
°C
or more.
Properly connect.
YE
S
NO
I
s
the
connector X111A of
the fin thermi
s
tor properly
connected to the
o
u
tdoor PCB?
To "P4" tro
ub
le
s
hooting
I
s
the
m
a
lf
u
nction code
"P4"di
s
pl
a
yed on the remote
control?
Doe
s
the
m
a
lf
u
nction code "L4"
rec
u
r when the
u
nit
s
t
a
rt
s
oper
a
tion?
NO
NO
T
u
rn ON the power
su
pply,
a
nd then pre
ss
the remote
controller check
bu
tton once.
Summary of Contents for BPMKS967B2B
Page 1: ...SiENBE18 621 E Series Service Manual Applied Models Super Multi Plus Heat Pump...
Page 12: ...SiENBE18 621 List of Functions 1 Part 1 List of Functions 1 List of Functions 2...
Page 19: ...List of Functions SiENBE18 621 8 List of Functions...
Page 33: ...Specifications SiENBE18 621 22 Specifications...
Page 69: ...Refrigerant Flow for Each Operation Mode SiENBE18 621 58 Refrigerant Circuit...
Page 121: ...Indoor Unit SkyAir Models SiENBE18 621 110 Function...
Page 169: ...Instruction SiENBE18 621 158 System Configuration FTXS 20 25 35C Indoor Unit...
Page 371: ...Method of Replacing The Inverter s Power Transistors Modules SiENBE18 621 360 Troubleshooting...
Page 393: ...SiENBE18 621 vi Index...