SiENBE18-621
Troubleshooting for RA Indoor Unit
Troubleshooting
277
4.5
Shutter Drive Motor / Shutter Limit Switch Abnormality
Remote Control
Display
C7
Method of
Malfunction
Detection
The shutter open / close performance is detected by the limit switch attached on its structure. In
this way, the shutter drive motor and the shutter limit switch are checked for failure.
Malfunction
Decision
Conditions
When the shutter is open, the limit switch is closed.
Supposed
Causes
"
Shutter drive motor defective
"
Shutter limit switch defective
"
Shutter itself deformed (warped)
"
Shutter's sealing material too thick
"
Detection error by broken relay harness or disconnected connector
"
Detection error due to defective PCB (2)
"
Foreign substance in blow port
Troubleshooting
Check No.03
Refer to P.278
T
u
rn off the power.
Check No. 0
3
Check the limit
s
witch contin
u
ity.
Remove
su
ch
subs
t
a
nce.
Repl
a
ce the limit
s
witch.
Reconnect the connector or
repl
a
ce the rel
a
y h
a
rne
ss
.
Repl
a
ce the
s
h
u
tter drive
motor or the PCB (2).
Check the
s
h
u
tter'
s
s
e
a
ling
m
a
teri
a
l.
Check the
s
h
u
tter for
deform
a
tion or it
s
s
e
a
ling
m
a
teri
a
l.
(Q0410)
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.
Foreign
subs
t
a
nce in
the
s
h
u
tter
s
tr
u
ct
u
re?
YE
S
NO
NO
NO
YE
S
S
h
u
tter clo
s
ed?
NO
S
h
u
tter opening it
s
elf?
YE
S
YE
S
YE
S
NO
Rel
a
y h
a
rne
ss
b
roken or connector
di
s
connected?
Limit
s
witch on power?
Open the
s
h
u
tter
a
nd t
u
rn on the
power.
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...