Daikin Super Multi NX FLKS25BAVMB, Руководство по обслуживанию, Страница: 87 / 144

SiBE05-722EE Troubleshooting
Service Diagnosis 77
4.10 Outdoor Unit PCB Abnormality
Error Code
E1
Method of Error
Detection
„
The system checks if the microprocessor is working in order.
„
The system checks if the zero-cross signal comes in properly.
Error Decision
Conditions
„
The microprocessor program runs out of control.
„
The zero-cross signal is not detected.
Supposed
Causes
„
Defective outdoor unit PCB
„
Broken harness between PCBs
„
Noise
„
Momentary drop of voltage
„
Momentary power failure
Troubleshooting RK(X)S25/35E2V1B, RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9, RXS25/35J2V1B,
RXS25K3V1B, RXS35K2V1B, RXS25/35L2V1B
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Continuously ON or OFF
Blink
Check the voltage of the
connection wires on the indoor
terminal board between No. 1
and No. 2.
NO
YES
Replace the connection wires
between the indoor unit and
outdoor unit. Normal?
YES
(R22974)
NO
YES
NO
Replace the outdoor unit
PCB (main PCB).
Ground the system.
Zero-cross signal
abnormality.
Replace the outdoor unit
PCB (filter PCB).
Replace the harness.
Check if the outdoor unit is
grounded.
Is LED A blinking?
Grounded?
Is the harness
broken?
Turn on the power again.