Troubleshooting by Indication on the Remote Controller
SiUS28-902_B
92
Service Diagnosis
For FTQ
Connect a short circuit connector (
)
For FCQ, FHQ, FAQ
Note:
The float switch connector
The float s
w
itch is
connected to the connector (
*
) of
the indoor
u
nit PCB.
A short circ
u
it
connector is connected to
the connector (
*
).
The drain
p
u
mp
w
orks
w
hen the
po
w
er s
u
pply is reset for the
indoor
u
nit.
The drain
p
u
mp is connected
to X25A or terminals Y1 and
Y2 of the indoor
u
nit PCB.
The
v
oltage of
terminals Y1 and Y2
or X25A is 20
8~
230
V
(
w
ithin 5 min
u
tes of resetting
the po
w
er s
u
pply).
W
ater
bu
ilds
u
p in
the drain pan.
The float s
w
itch
f
u
nctions normally.
The float
s
w
itch contact is
forming a short circ
u
it
(contin
u
ity check
w
ith the
connector (
*
)
disconnected)
Becomes
normal
w
hen the
connector (
*
) of the indoor
u
nit PCB is short
circ
u
ited
Is po
w
er s
u
pply
20
8~
230
V
pro
v
ided?
Replace the float s
w
itch.
Modify the float s
w
itch
'
s
connection and t
u
rn O
N
again.
Connect the drain p
u
mp and
t
u
rn on again.
Check the drain piping for
clogging or
u
p
w
ard slope, etc.
Replace the indoor
u
nit PCB.
Replace the drain p
u
mp or
check for dirt, etc.
Connect either a short circ
u
it
connector or float s
w
itch and
t
u
rn O
N
again.
Defecti
v
e indoor
u
nit PCB.
Loose the connection of
connector.
Pro
v
ide 20
8~
230
V
po
w
er
s
u
pply.
N
O
YES
N
O
YES
YES
N
O
N
O
YES
N
O
YES
YES
N
O
N
O
YES
N
O
YES
N
O
YES
N
O
YES
Model
Connector
PCB
FCQ
X8A
A1P
FHQ
X8A
A1P
FAQ
X15A
A1P
FTQ
X15A
A1P
