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SiUS30-1301
Troubleshooting by Indication on the Remote Controller
Service Diagnosis
183
Note:
1. Make a comparison between the voltage of the pressure sensor and that read by the pressure
gauge.
(As to the voltage of the pressure sensor, make measurement of voltage at the connector, and
then convert it to pressure according to information on P.251.)
2. Make measurement of voltage of the pressure sensor.
3. Connector code
N
O
YES
Check
if the “high
press
u
re”
v
al
u
e
and the act
u
al
meas
u
rement
v
al
u
e
b
y
press
u
re sensor are
the same.
Replace the condensing
u
nit
main PCB (A1P).
· The high press
u
re sensor is normal, and the press
u
re detected
w
ith the
PCB is also normal.
· The high press
u
re has really
b
ecome high.
CHECK 1
Remo
v
e conditions that ca
u
sed the high press
u
re to escalate.
Connect the ser
v
ice checker to compare the “high press
u
re”
v
al
u
e and the
act
u
al meas
u
rement
v
al
u
e
b
y press
u
re sensor (
*
1)
b
y
u
sing the ser
v
ice
checker.
Service Checker
A
Model name
Connector
RWEYQ72/84PTJU
X46A
RWEYQ72/84PTJU9
X32A
RWEYQ72/84PYDN
CHECK 13
CHECK 1
CHECK 13