Troubleshooting by Indication on the Remote Controller
SiUS28-902_a
115
Troubleshooting
3.24 “
J5
”
Outdoor Unit: Malfunction of Thermistor (R3T, R5T)
for Suction Pipe 1, 2
Remote
Controller
Display
J5
Applicable
Models
RZQ18~30PVJU
Method of
Malfunction
Detection
Malfunction is detected from the temperature detected by the thermistor for suction pipe 1, 2.
Malfunction
Decision
Conditions
When a short circuit or an open circuit in the thermistor for suction pipe 1, 2 are detected.
Supposed
Causes
Defect of thermistor (R3T, R5T) for outdoor unit suction pipe
Defect of outdoor unit P.C.B. (A1P)
Troubleshooting
Refer to
Thermistor Resistance / Temperature Characteristics
table on P.166.
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.
Resistance
is normal
w
hen
meas
u
red after
disconnecting the thermistor
(R3T, R5T) from the
o
u
tdoor
u
nit P.C.B.
(3.5k
Ω
~
360k
Ω
)
Replace the o
u
tdoor
u
nit P.C.B.
(A1P).
Connect the thermistor and t
u
rn
on again.
N
O
N
O
Replace the thermistor (R3T, R5T).
YES
YES
Connector
of the thermistor for
s
u
ction pipe1, 2 is
connected to o
u
tdoor
u
nit P.C.B.
(A1P).
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