Compressor Rotor Location Cannot Detect (Permanent Stop) - Fujitsu AB*A30LBT Service Instruction

Trouble shooting 18
OUTDOOR UNIT Error Method:
Compressor rotor location cannot detect
(Permanent Stop)
Detective Actuators:
Outdoor Unit Main PCB Circuit
Compressor
Forecast of Cause :
1. Defective connection of electric components
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, change Main PCB.
Indicate or Display:
Indoor Unit : Operation LED: 5 times blink, Timer LED: 5 times blink,
Filter LED
Outdoor Unit : LED 0.1sec ON/ 2sec OFF
ERROR CODE : E : 1A
Detective details:
While running the compressor, if the detected rotor location is out of
phase with actual rotor location 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.
2. Main PCB failure
07-21
: OFF
3. Compressor failure