Specifications

-
223
-
'10 • SR-T-091
WAIT
Communication error at
initial operation (3/3)
1. Applicable model
5. Troubleshooting
All models
When the remote controller
display is extinguished after the
power on.
Diagnosis Countermeasure
YES
NO
Remote controller display is
extinguished after the power on.
YES
NO
NO
YES
NO
YES
Is the
green LED on the indoor unit
flashing?
Is the
fuse on the indoor control
PCB OK?
Is
approx. 10-11V detected
between wires at the remote controller
side after disconnecting the
remote controller?
Are wires
connected properly between the indoor and
the outdoor units?
Is approx.
DC20V detected between -
on the outdoor unit terminal
block?
NO
YES
Is approx
DC20V detected between
-
on the indoor unit terminal
block?
YES
NO
NO
Replace fuse.
Short-circuit on remote
controller wire
Defective remote controller
Correct wires.
Defective outdoor
PCB
ª
Replace.
Defective connection wire
(Broken wire)
Noise
Defective indoor control
PCB
ª
Replace.
2. Error detection method
3.
Condition of Error displayed
4. Presumable cause
• Blown fuse
• Connection between PCB’s
• Blown fuse
• Faulty indoor control PCB
• Defective remote controller
• Wire breakage on remote
controller
• Faulty outdoor PCB
Note:
Error code
Remote controller:
LED Green Red
Indoor
Stays OFF Keeps flashing
Content