Troubleshooting by Error Code
SiUS371614E
209
Service Diagnosis
3.27 Actuation of High Pressure Switch
Error Code
E3
Applicable
Models
All outdoor unit models
Method of Error
Detection
Detect continuity across the high pressure switch in the protection device circuit.
Error Decision
Conditions
When part of the protection device circuit opens.
(Reference) Operating pressure of the high pressure switch:
Operating pressure: 4.0 MPa (580 psi)
Resetting pressure: 3.0 MPa (435 psi)
Supposed
Causes
Activation of high pressure switch
Defective high pressure switch
Defective outdoor unit main PCB (A1P)
Momentary power failure
Defective high pressure sensor
Troubleshooting
NO
YES
YES
Replace the high pressure
switch.
REYQ72TA: S1PH
REYQ96-168TA: S1PH, S2PH
Remedy defective points.
Replace the high pressure sensor.
YES
Are the
above 3 points
OK?
Does the error
E3
recur?
NO
Is the
operating
pressure of the high
pressure switch normal
(4.0 MPa
(580 psi))?
NO
YES
Are the
characteristics of
the high pressure
sensor normal?
(
∗
1)
NO
(1)Mount a pressure gauge on the high pressure
service port.
(2)Reset the operation using the remote controller,
and then restart the operation.
A
Check for the following 3 points:
(1)
Is the stop valve open?
(2)
Is the high pressure switch connector
properly connected to the outdoor unit main
PCB?
(3)
Is there continuity across the high pressure
switch?
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Summary of Contents for REYQ-TA Series
Page 1: ...Service Manual SiUS371614E REYQ72 456TAYDU REYQ72 456TATJU Heat Recovery 60 Hz...
Page 304: ...Wiring Diagrams SiUS371614E 291 Appendix REYQ96 120TAYDU 2D106425A...
Page 305: ...SiUS371614E Wiring Diagrams Appendix 292 REYQ144 168TAYDU 2D106426A...
Page 306: ...Wiring Diagrams SiUS371614E 293 Appendix REYQ72TATJU 3D106421A...
Page 307: ...SiUS371614E Wiring Diagrams Appendix 294 REYQ96 120TATJU 2D106422A...
Page 308: ...Wiring Diagrams SiUS371614E 295 Appendix REYQ144 168TATJU 2D106423A...
Page 318: ...Wiring Diagrams SiUS371614E 305 Appendix VAM1200GVJU 3D073270C...
Page 320: ...Wiring Diagrams SiUS371614E 307 Appendix 1 4 2 Multi Branch Selector Unit BS4Q54TVJ 3D089123B...
Page 321: ...SiUS371614E Wiring Diagrams Appendix 308 BS6 8Q54TVJ 2D089122B...
Page 322: ...Wiring Diagrams SiUS371614E 309 Appendix BS10 12Q54TVJ 2D089121B...
Page 323: ...Revision History Month Year Version Revised contents 02 2017 SiUS371614E First edition...
