Check
SiBE041102_A
92
Service Diagnosis
Diagnose method (Diagnose according to 6 LEDs lighting status.)
(1) When all the LEDs are lit uniformly, the compressor is defective.
→
Replace the compressor.
(2) When the LEDs are not lit uniformly, check the power module.
→
Refer to
Check No.22
.
(3) If NG in
Check No.22
, replace the power module (PCB).
If OK in
Check No.22
, check if there is any solder cracking on the PCB.
(4) If any solder cracking is found, replace the PCB or repair the soldered section.
If there is no solder cracking, replace the PCB.
Caution
(1) When the output frequency is low, the LEDs blink slowly. As the output frequency increases,
the LEDs blink quicker. (The LEDs look like they are lit.)
(2) On completion of diagnose by the inverter checker, be sure to re-crimp the FASTON
terminals. Otherwise, the terminals may be burned due to loosening.
5.8
Installation Condition Check
Check No.17
(R15292)
Direction of crimp
FASTON terminal
This size is shortened
by the crimp.
Installation condition check
OK
Check the allowable
dimensions of the air
suction and
discharge area.
Is the airflow blocked by
obstacles or winds
blowing in the opposite
direction?
(R14390)
NG
YES
YES
YES
Is the discharged air
short-circuited?
NO
NO
NO
Is the outdoor heat
exchanger very dirty?
Change the installation
location or direction.
Change the installation
location or direction.
Clean the outdoor heat
exchanger.
Change the installation
location or direction.
Check the outdoor temperature.
(The outdoor temperature
should be 46˚C or lower.)
