Daikin GYEQ20AN Service Manual page 168

Flow Charts for Troubleshooting
31
Compressor Automatic Emergency Run
Sub-code 0: Changes from E0-0 (engine fails to start) or E2-0 (engine stall) to compressor automatic
Sub-code 1: Changes from E0-0 (engine fails to start) or E2-0 (engine stall) to compressor automatic
Sub-code 2: Changes from E6-2 (abnormal discharge temperature) to compressor automatic emergency
Sub-code 3: Changes from E6-3 (abnormal discharge temperature) to compressor automatic emergency
Sub-code 4: Changes from H1-2 (clutch failure) to compressor automatic emergency run (compressor 1
Description
of the failure
Sub-code 5: Changes from H1-2 (clutch failure) to compressor automatic emergency run (compressor 2
Sub-code 6: Changes from F6 (discharge temperature sensor failure) to compressor automatic
Sub-code 7: Changes from J6 (oil return solenoid valve failure) to compressor automatic emergency run.
Sub-code 8: Changes from J7 (high-side pressure sensor system failure) or JH (pressure sensor
Sub-code 9: Changes from JJ (oil temperature sensor failure) to compressor automatic emergency run.
Engine fails to start up; engine stall; abnormal discharge temperature; clutch failure;
Possible
causes discharge temperature sensor failure; oil return solenoid valve failure;
of the failure
high-side pressure sensor system failure; pressure sensor failure; oil temperature sensor failure
Flow chart
Sub-code alarm issued
Start next time
Move to compressor
emergency run
∗Remote controller run lamp: lit
∗Remote controller inspection lamp: off
Compressor
emergency run estimate is
less than 50 hours
YES
Continuous compressor
emergency run
See the troubleshooting for the corresponding error code.
157
emergency run (compressor 1 failure).
emergency run (compressor 2 failure).
run (compressor 1 failure).
run (compressor 2 failure).
failure).
failure).
emergency run.
failure) to compressor automatic emergency run.
NO
Alarm stop
∗Remote run lamp: blinking
∗
Remote controller inspection lamp: blinking
Refer to the corresponding
error code troubleshooting
SiAUY361411EA
Error
JA
code
043717-00EN00
Troubleshooting