Troubleshooting by Indication on the Remote Controller
SiUS30-1301
196
Service Diagnosis
3.27 High Pressure Sensor Abnormality
Error Code
JA
Applicable
Models
RWEYQ72P, 84P
Method of Error
Detection
Error is detected from the pressure detected by the high pressure sensor.
Error Decision
Conditions
When the high pressure sensor is short circuit or open circuit
(Not less than 611.9 psi, or 1.45 psi and below)
Supposed
Causes
Defective high pressure sensor system
Connection of low pressure sensor with wrong connection
Defective condensing unit PCB.
Defective connection of high pressure sensor
Troubleshooting
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.
If the
PCB
press
u
re
detection normal?
(Make a comparison
b
et
w
een the checker
press
u
re data and the
v
oltage characteristics.)
Are the
characteristics of
the high press
u
re
sensor normal? (Make a
comparison
b
et
w
een the
v
oltage characteristics and
the ga
u
ge press
u
re.)
N
O
Replace the high press
u
re sensor.
Replace the condensing
u
nit PCB.
N
O
YES
1. Mo
u
nt the high press
u
re
ga
u
ge.
2. Connect the checker for
V
R
V
.
YES
CHECK 13
CHECK 12
Are the
characteristics of the
high press
u
re sensor
normal?
Replace the high press
u
re sensor.
Replace the condensing
u
nit PCB.
N
O
YES
Reset the operation, and then
restart the condensing
u
nit.