Fujitsu AB Series A18LATN Service Instruction page 99

Trouble shooting 30
OUTDOOR UNIT Error Method:
Compressor Start-up error
(Permanent Stop)
Detective Actuators:
Outdoor Unit Main PCB Circuit
Compressor
Forecast of Cause :
1. Defective connection of electric components 2. Main PCB failure 3. Compressor failure
Check Point 1 : Check Noise from Compressor
Turn on Power and check operation noise.
If an abnormal noise show, replace Compressor.
OK OK
Check Point 2 : Check connection of around the Compressor components
For Compressor Terminal, Main PCB
Check if connector is removed.
Check erroneous connection.
Check if cable is open.
(Refer to PARTS INFORMATION 2)
>>Upon correcting the removed connector or mis-wiring, reset the power.
OK OK
Check Point 3 : Replace Main PCB
If Check Point 1,2 do not improve the symptom, replace Main PCB.
Indicate or Display:
Outdoor Unit (AB*A18L/ 24L) : LED 0.1sec ON/ 2sec OFF
(AB*A36L/ 45L) : LED 14 times blink
ERROR CODE : E : 1A
Detective details:
On start-up the compressor, when detected rotor position is out of phase
with actual rotor position more than 90 degrees,the compressor stops.
After the compressor restarts, if the same operation is repeated
within 40sec, the compressor stops again.
If and repeats 5 times, the compressor stops permanently.
07-31