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Troubleshooting by Indication on the Remote Controller
SiUS30-1301
190
Service Diagnosis
3.23 Abnormal Discharge Pipe Temperature
Error Code
F3
Applicable
Models
RWEYQ72P, 84P
Method of Error
Detection
Abnormality is detected according to the temperature detected by the discharge pipe temperature
thermistor.
Error Decision
Conditions
When the discharge pipe temperature rises to an abnormally high level (275 °F or more)
When the discharge pipe temperature rises suddenly (248 °F or more for 10 successive minutes)
Supposed
Causes
Defective discharge pipe temperature thermistor
Defective connection of discharge pipe temperature thermistor
Defective condensing unit PCB
Troubleshooting
Note:
1. Compare the resistance value of discharge pipe thermistor and the value based on the surface
thermometer.
N
O
Check
if
temperat
u
re of
discharge pipe
b
y
u
sing ser
v
ice checker is
the same
w
ith act
u
al
meas
u
rement
v
al
u
e of
discharge pipe
thermistor.
N
O
Replace the discharge pipe
thermistor.
Replace the condensing
u
nit main
PCB (A1P).
Check if
discharge pipe
thermistor property is
normal.
(
*
1)
YES
YES
· Discharge pipe thermistor is normal and the
temperat
u
re detection of the condensing
u
nit main
PCB is also normal.
· Act
u
ally the temperat
u
re of discharge pipe is high.
CHECK 3
Remo
v
e the factor of o
v
erheat operation.
Service Checker
Connect the ser
v
ice checker to compare the
temperat
u
re of discharge pipe
b
y
u
sing ser
v
ice
checker
w
ith act
u
al meas
u
rement
v
al
u
e of discharge
pipe thermistor
CHECK 11
.
Caution
Be s
u
re to t
u
rn off the po
w
er s
w
itch
b
efore connecting or disconnecting
connectors, or parts may
b
e damaged.
Connect the ser
v
ice checker.
Press reset and start operation again.
CHECK 3
CHECK 11