SiUS28-902_a
Troubleshooting by Indication on the Remote Controller
Troubleshooting
122
3.29 “
L4
” Outdoor Unit: Malfunction of Inverter Radiating Fin
Temperature Rise
Remote
Controller
Display
L4
Applicable
Models
RZQ18~30PVJU
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 180°F.
Supposed
Causes
Actuation of fin thermal (Actuates above 180°F)
Defect of inverter P.C.B.
Defect of fin thermistor
Troubleshooting
Caution
Be s
u
re to t
u
rn off the po
w
er s
w
itch
b
efore connecting or disconnecting
the connector, or parts co
u
ld
b
e damaged.
Fa
u
lty heat radiation of po
w
er
u
nit
• Air s
u
ction opening
b
locked
• Dirty radiator fin
• High o
u
tdoor temperat
u
re
Contin
u
e operation.
N
O
YES
YES
Replace the o
u
tdoor P.C.B. (A1P)
as
w
ell.
YES
The radiator
fin temperat
u
re is s
u
pposed
to ha
v
e risen to 1
8
0
°
F
or more.
Connect properly.
YES
N
O
Is the
connector X111A of
the fin thermistor properly
connected to the
o
u
tdoor P.C.B.?
To "
P4
" tro
ub
leshooting
Is the
malf
u
nction code "
P4
"
displayed on the remote
controller?
Does the
malf
u
nction code "
L4
"
rec
u
r
w
hen the
u
nit starts
operation?
N
O
N
O
T
u
rn O
N
the po
w
er s
u
pply,
and then press the remote
controller check
bu
tton once.
Summary of Contents for SkyAir FCQ18PVJU
Page 1: ...Split System Air Conditioners SkyAir Inverter R 410A Heat Pump 60Hz P Series SiUS28 902_a...
Page 44: ...Other Control SiUS28 902_a 37 Function...
Page 81: ...SiUS28 902_a Troubleshooting by Remote Controller Troubleshooting 74...
Page 185: ...SiUS28 902 Precautions for New Refrigerant R 410A Precautions for New Refrigerant R 410A 178...