High Pressure Sensor Abnormality - Daikin VRV II-Q RQYQ8-48PY1B Service Manual

SiBE341027

2.16 High Pressure Sensor Abnormality

J1
Remote
Controller
Display
Applicable RQYQ-PY1B
Models
Method of Error Error is detected from the pressure measured with high pressure sensor.
Detection
Error Decision When the high pressure sensor is short circuit or open circuit.
(Not less than 4.22MPa, or 0.01MPa or less)
Conditions
Supposed
Causes
Troubleshooting
Note:
*1. Pressure sensor subject to error code
Service Diagnosis
Defective high pressure sensor
Connection of low pressure sensor with wrong connection.
Defective outdoor unit PCB.
Defective connection of high pressure sensor
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
1.Set 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 (*2)
and the gauge
pressure.)
YES
If the
PCB pressure detection
normal? (Make a comparison
between the checker pressure
data and the voltage
characteristics
(*2).)
YES
Reset the operation, and then
restart the operation.
Are the
characteristics of the
high pressure sensor
normal?
YES
Error code Pressure sensor subject to error code
J1 High pressure sensor (Liquid pipe outlet)
Troubleshooting by Remote Controller
NO
NO
NO
Replace the high pressure sensor.
Replace the outdoor unit sub PCB
(A2P).
Replace the high pressure sensor.
Replace the outdoor unit sub PCB
(A2P).
Electric symbol
S2NPH
127