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Troubleshooting
SiENBE04-925_A
84
Service Diagnosis
4.8
Outdoor Unit PCB Abnormality
Remote Control
Display
E1
Method of
Malfunction
Detection
The system follows the microprocessor program as specified.
The system checks to see if the zero-cross signal comes in properly.
Malfunction
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 fall of voltage
Momentary power failure, etc.
Troubleshooting
20/35 class
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
NO
YES
YES
(R12161)
YES
NO
NO
Replace the outdoor unit
PCB.
Ground the system.
Zero-cross signal
abnormality.
Replace the outdoor unit
PCB (1).
Replace the harness.
Check to see if the outdoor unit is
grounded.
Is LED A blinking?
Grounded?
Is the harness
broken?
Turn on the power again.
∗
Before you check the LED A,
cancel the standby electricity
saving function by operating
fan operation with the remote
control.
∗
Wait at least for 7 sec. after
turning on the power.
SIENBE04-925_A_FRONT.pdf 99
24/02/2011 13:53:56
Содержание Inverter FTXL20G2V1B
Страница 8: ...SiENBE04 925_A vi Table of Contents...
Страница 14: ...Introduction SiENBE04 925_A xii...
Страница 15: ...SiENBE04 925_A List of Functions 1 Part 1 List of Functions 1 Functions 2...
Страница 17: ...SiENBE04 925_A Specifications 3 Part 2 Specifications 1 Specifications 4...
Страница 20: ...Specifications SiENBE04 925_A 6 Specifications...
Страница 186: ...SiENBE04 925_A Outdoor Unit RXL20G2V1B Removal Procedure 171 4 Feature of the thermistors Step Procedure Points R9356...