High Pressure Sensor Abnormality - Daikin VRV-WIII RWEYQ72PTJU Service Manual

Troubleshooting by Indication on the Remote Controller

3.27 High Pressure Sensor Abnormality

JA
Error Code
Applicable
RWEYQ72P, 84P
Models
Method of Error Error is detected from the pressure detected by the high pressure sensor.
Detection
Error Decision
When the high pressure sensor is short circuit or open circuit
(Not less than 611.9 psi, or 1.45 psi and below)
Conditions
 Defective high pressure sensor system
Supposed
 Connection of low pressure sensor with wrong connection
Causes
 Defective condensing unit PCB.
 Defective connection of high pressure sensor
Troubleshooting
196
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
1. Mount the high pressure
gauge.
2. Connect the checker for
VRV.
Are the
characteristics of
the high pressure
sensor normal? (Make a
comparison between the
voltage characteristics and
the gauge pressure.)
CHECK 13
YES
If the
PCB
pressure
detection normal?
(Make a comparison
between the checker
pressure data and the
voltage characteristics.)
CHECK 12
YES
Reset the operation, and then
restart the condensing unit.
Are the
characteristics of the
high pressure sensor
normal?
YES
NO
NO
NO
SiUS30-1301
Replace the high pressure sensor.
Replace the condensing unit PCB.
Replace the high pressure sensor.
Replace the condensing unit PCB.
Service Diagnosis