Self-Diagnosis Function And Checking Points - Fujitsu AS*9LSACW Service Instructions Manual

Self - diagnosis function and Checking points
Large Division Error
Indication
Large Div.
Contents
Operation Timer
ON 1 sec. Transmission
blinking Error
Small Division Error
Indication
Small Div. Contents
(Protection)
Opera Timer
tion
0.1 0.5 sec Serial reverse transfer
sec. 2 times error at starting
blinki operation
ng
0.1 0.5 sec Serial reverse transfer
sec. 3 times error during
blinki operation
ng
0.1 0.5 sec Serial forward transfer
sec. 4 times error at starting
blinki operation
ng
0.1 0.5 sec Serial forward transfer
sec. 5 times error during
blinki operation
ng
At the start up, the indoor unit does not receive the signal for 10 consecutive seconds from the time when the
up
power relay was ON. > Permanent stop after 30 seconds.
[Diagnosis Point]
- Check the indoor/outdoor cable connection (in order). If the cable wiring is not abnormal, measure the
voltage of the outdoor unit terminals and diagnose the defective location.
(Refer to the after mentioned [Serial Signal Diagnosis] for the voltage measuring method and diagnosis
method.)
When the indoor unit does not receive the signal for 10 consecutive seconds during the operation
the
stop after 30 seconds.
[Diagnosis Point]
- Check the indoor/outdoor cable connection (in order). If the cable wiring is not abnormal, measure
voltage of the outdoor unit terminals and diagnose the defective location.
(Refer to the after mentioned [Serial Signal Diagnosis] for the voltage measuring method and diagnosis
method.)
The outdoor unit does not receive the signal for 10 consecutive seconds from the time when the power relay was
up
ON. > Outdoor unit stops.
[Diagnosis Point]
- Check the indoor/outdoor cable connection (in order). If the cable wiring is not abnormal, measure the
voltage of the outdoor unit terminals and diagnose the defective location.
(Refer to the after mentioned [Serial Signal Diagnosis] for the voltage measuring method and diagnosis
method.)
When the outdoor unit does not receive the signal for 10 consecutive seconds during the operation
the
Outdoor unit stops.
[Diagnosis Point]
- Check the indoor/outdoor cable connection (in order). If the cable wiring is not abnormal, measure the
voltage of the outdoor unit terminals and diagnose the defective location.
(Refer to the after mentioned [Serial Signal Diagnosis] for the voltage measuring method and diagnosis
method.)
Diagnosis Method
> Permanent
the
>