(4) LED Indication on the Outdoor Unit’s P.C.B. Ass’y
If something goes wrong with the outdoor unit, LED lamps on the outdoor P.C.B. Ass’y light up to
show the cause of the trouble, in addition to the Alarm message on the remote controller.
* REFRIGERANT SHORTAGE
Note particularly that a shortage of refrigerant is only shown by the outdoor P.C.B. Ass’y LEDs
and the Alarm Message does not appear on the Indoor Remote Controller .
The compressor keeps running even when the refrigerant is less, so when you find the LED
indication on the outdoor P.C.B. Ass’y, stop the air conditioner immediately to avoid the
compressor damage.
Fig. 24
LED 2 on
P.C. board
Remote
controller
LED 1 on
P.C. board
Possible cause of trouble
No message
*
No message
P02
P04, P05
*
*
F04~F09
*
H01, H02
*
H04, H05
*
E15, E16
**
Flash at the same time
ÒSETTINGÓ
flashes.
Flash alternately
0654_C_I
LED 1
LED 2
Normal
Outdoor unit address is duplicated.
detecting refrigerant shortage.
FMo ¥ CM thermal protection is in operation.
Power supply voltage is abnormal.
High voltage SW activates
Negative phase protector activates.
Sensor is abnormal. (Open or short)
Abnormal compressor current value is detected.
Scroll thermal protection failure is detected.
Auto address failure
Auto address is in operation.
NOTE : LED lamps OFF
: LED lamps ON (lights up) *: LED lamps ON (flashes)
CAUTION
30
