Troubleshooting by Indication on the Remote Controller
SiUS28-902_B
120
Service Diagnosis
3.25 Discharge Pipe Thermistor Abnormality
Remote
Controller
Display
J3
Applicable
Models
RZR, RZQ
Method of Error
Detection
The error is detected from the temperature detected by discharge pipe temperature thermistor.
Error Decision
Conditions
When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected
Supposed
Causes
Defective thermistor (R2T) for outdoor unit discharge pipe
Defective outdoor unit PCB (A1P)
Troubleshooting
Refer to “Thermistor Resistance / Temperature Characteristics” table on P.162.
Connector
is connected to
X12A of o
u
tdoor
u
nit PCB
(A1P).
Resistance is
normal
w
hen
meas
u
red after
disconnecting the thermistor
(R2T) from the o
u
tdoor
u
nit PCB (5.0k
W
~
640k
W
)
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 may
b
e damaged.
Caution
Replace the o
u
tdoor
u
nit PCB
(A1P).
Connect the connector and t
u
rn
O
N
again.
Replace the thermistor (R2T).
N
O
YES
N
O
YES
