SiUS28-902_a
Troubleshooting by Indication on the Remote Controller
Troubleshooting
114
3.23 “
J3
” Outdoor Unit: Malfunction of Discharge Pipe
Thermistor (R2T)
Remote
Controller
Display
J3
Applicable
Models
RZQ18~30PVJU
Method of
Malfunction
Detection
Malfunction is detected from the temperature detected by discharge pipe temperature
thermistor.
Malfunction
Decision
Conditions
When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.
Supposed
Causes
Defect of thermistor (R2T) for outdoor unit discharge pipe
Defect of outdoor unit P.C.B. (A1P)
Troubleshooting
Refer to
Thermistor Resistance / Temperature Characteristics
table on P.167.
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
R2T from the o
u
tdoor
u
nit P.C.B.
(5.0k
Ω
~
640k
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 (R2T).
YES
YES
Connector
is connected to
o
u
tdoor
u
nit
P.C.B.
(A1P).
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