Daikin VRV RXYQ72-384XAYCA, Service Manual

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SiUS342004EB Troubleshooting by Error Code
Part 6 Service Diagnosis 282
3.32 Detection of Ground Leakage by Leak Detection Circuit
Applicable
Models
All outdoor unit models
Error Code
E2
Sub code: 01-03
Method of Error
Detection
Detect leakage current in the ground leakage detection circuit and detect error on the outdoor unit
main PCB.
Error Decision
Conditions
The leakage current is detected.
Supposed
Causes

Ground fault

Improper wiring passing through the current sensor

Temporary liquid compression or melting in compressor
Troubleshooting
YES
N O
N O
Is w iring
passing through the
current sensor (T1A)
proper?
Insulation failure of
compressor
Insulation failure
of component except
compressor
Pass proper w iring through the
sensor.
Turn OFF the po w er supply,
and then disconnect
compressor lead
w ire.
Reinstall w iring, and then turn
O N the po w er supply again.
N O
Replace the compressor (M1C).
YES
Replace the relevant
component.
YES
N ormal (Continue operation)
The error is considered to have
resulted from temporary liquid
compression or penetration in
the compressor.
Take care of the liquid w hen
po w er is shut do w n over an
extended period of time due
to po
w er failure or else.
Caution
Be sure to turn off the po w er s w itch before connecting or disconnecting
connectors, or parts may be damaged.