Troubleshooting
SiUS041829E
84
Part 6 Service Diagnosis
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
Noise
Momentary drop of voltage
Momentary power failure
Troubleshooting
Caution
Be s
u
re to t
u
rn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Contin
u
o
u
sly ON or OFF
Blink
YES
(R21201)
NO
Replace the o
u
tdoor
u
nit
PCB (main PCB).
Gro
u
nd the system.
Zero-cross signal
abnormality.
Replace the o
u
tdoor
u
nit
PCB (main PCB).
Check if the o
u
tdoor
u
nit is
gro
u
nded.
Is LED A blinking?
Gro
u
nded?
T
u
rn on the power again.
∗
Before yo
u
check the LED A,
cancel the standby electricity
saving f
u
nction by starting fan
operation with the remote
controller.
∗
Wait at least for 7 sec. after
t
u
rning on the power.
Содержание FTXR-T Series
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Страница 139: ...SiUS041829E Piping Diagrams Part 8 Appendix 135 1 2 Outdoor Unit RX09 12RMVJU9 RX18RMVJU9 3D092207C 3D092220C...
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