Technibel KPAVM93R5TAA Technical Data & Service Manual page 30

(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.
LED 2 on LED 1 on
P .C. board P .C. board
*
*
*
*
*
*
Flash at the same time
**
Flash alternately
NOTE : LED lamps OFF
CAUTION
* 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.
Remote
Possible cause of trouble
controller
No message Normal
Outdoor unit address is duplicated.
No message
detecting refrigerant shortage.
FMo ¥ CM thermal protection is in operation.
P02
Power supply voltage is abnormal.
High voltage SW activates
P04, P05
Negative phase protector activates.
F04~F09
Sensor is abnormal. (Open or short)
H01, H02
Abnormal compressor current value is detected.
H04, H05
Scroll thermal protection failure is detected.
Auto address failure
E15, E16
Auto address is in operation.
ÒSETTINGÓ
flashes.
: LED lamps ON (lights up) *: LED lamps ON (flashes)
LED 1
LED 2
30
Fig. 24
0654_C_I