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Troubleshooting by Error Code SiUS342303E
301 Part 6 Service Diagnosis
3.34 Missing of Ground Leakage Detection Core
Applicable
Models
All outdoor unit models
Error Code
E2
Sub code: 06, 07
Method of Error
Detection Error is detected according to whether or not there is continuity across the connector X101A for
leakage detection circuit (Q1LD).
Error Decision
Conditions No current flows at the time of turning ON the power supply.
Supposed
Causes

Disconnection of connector X101A
 Wiring disconnection
 Defective outdoor unit main PCB
Troubleshooting
NO
YES
YES
Is the system reset to
normal?
Is X101A connected?
The error is considered to have
resulted from external factors
other than failures (e.g. noise).
Turn OFF the power supply, and
then disconnect compressor leads.
YES
Properly connect the connector.
NO
Confirm if there is a
leakage with a Megger
tester.
Replace the outdoor unit main
PCB (A1P).
NO
Replace the compressor.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Ensure the unit
corresponding to the error
code
E2 in monitor mode.
E2-06: Master
E2-07: Sub