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Troubleshooting
SiUS041501E
71
Service Diagnosis
4.9
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 sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Continuously ON or OFF
Blink
YES
(R21201)
NO
Replace the outdoor unit
PCB (main PCB).
Ground the system.
Zero-cross signal
abnormality.
Replace the outdoor unit
PCB (main PCB).
Check if the outdoor unit is
grounded.
Is LED A blinking?
Grounded?
Turn on the power again.
∗
Before you check the LED A,
cancel the standby electricity
saving function by starting fan
operation with the remote
controller.
∗
Wait at least for 7 sec. after
turning on the power.
Summary of Contents for FTKN09NMVJU
Page 12: ...SiUS041501E 1 List of Functions Part 1 List of Functions 1 Functions 2...
Page 59: ...SiUS041501E Remote Controller 48 Part 5 Remote Controller 1 Cooling Only 49 2 Heat Pump 51...
Page 65: ...SiUS041501E Service Diagnosis 54 5 13 Power Module Check 100...
Page 132: ...Revision History Month Year Version Revised contents 03 2015 SiUS041501E First edition...