SiUS331604E
Troubleshooting by Error Code
Service Diagnosis
168
Troubleshooting
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.
)
NO
YES
YES
YES
NO
Is the
high pressure
switch operating
value normal (4.0 MPa
(580 psi))?
NO
YES
Are the
characteristics of the
high pressure sensor
normal? (
∗
1)
NO
Are the three points
above OK?
Rectify the defective points,
if any.
NO
YES
Check
if the high
pressure value and the
actual value measured by
pressure sensor are
the same.
Replace the outdoor main
PCB (A1P).
(1) Mount a pressure gauge on the high pressure
service port.
(2)
Reset the operation using the remote controller,
and then restart the operation.
Does the abnormal
stop
E3
recur?
Replace the high pressure switch.
Replace the high pressure sensor.
· The high pressure sensor is normal, and the pressure detected with the PCB is also normal.
· The high pressure has really become high.
CHECK 1
Remove the causes by which the high pressure has become
high.
Service Checker
Compare the high pressure value checked with the Service Checker and
the actual value measured by pressure sensor (
∗
1).
Check for the points shown below.
(1)
Is the stop valve open?
(2)
Is the high pressure switch connector properly
connected to the main PCB?
(3)
Does the high pressure switch have continuity?
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
CHECK12
CHECK1
CHECK12
Summary of Contents for VRV IV-S RXTQ-TAVJU Series
Page 1: ...Service Manual SiUS331604E RXTQ36 48 60TAVJU Heat Pump 60 Hz...
Page 254: ...Wiring Diagrams SiUS331604E 241 Appendix RXTQ48TAVJU 3D100496A...
Page 255: ...SiUS331604E Wiring Diagrams Appendix 242 RXTQ60TAVJU 3D100497A...
Page 260: ...Wiring Diagrams SiUS331604E 247 Appendix FXEQ07 09 12 15 18 24PVJU C 3D098557...
Page 267: ...SiUS331604E Wiring Diagrams Appendix 254 FXTQ12 18 24 30 36 42 48 54PAVJU 3D065036G...
Page 270: ...Wiring Diagrams SiUS331604E 257 Appendix VAM1200GVJU 3D073270C...
Page 271: ...Revision History Month Year Version Revised contents 06 2016 SiUS331604E First edition...
