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Troubleshooting by Indication on the Remote Controller
SiUS28-902_a
113
Troubleshooting
3.22 “
H9
” Outdoor Unit: Malfunction of Thermistor (R1T) for
Outdoor Air
Remote
Controller
Display
H9
Applicable
Models
RZQ18~30PVJU
Method of
Malfunction
Detection
Malfunction is detected from the temperature detected by the outdoor air thermistor.
Malfunction
Decision
Conditions
When the outside air temperature thermistor has short circuit or open circuit.
Supposed
Causes
Defect of thermistor (R1T) for outdoor air
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
(R1T) from the o
u
tdoor
u
nit P.C.B.
(3.5k
Ω
to
360k
Ω
)
Connector is
connected to X11A of
o
u
tdoor P.C.B.
(A1P).
Replace the o
u
tdoor
u
nit P.C.B.
(A1P).
Connect the connector and t
u
rn
on again.
N
O
N
O
Replace the thermistor (R1T).
YES
YES
Summary of Contents for SkyAir FCQ18PVJU
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