Jun 03, 2025
Compressor Control Error
Compressor control error codes by model:
9x Operation & 5x Timer flash:
RL2 series, RLS3 series, RLS2 series, RLB/RLXB series, RLF series, RLF1 series, LUAS1 series, LMAS series, LZBS series, LZAS series, LPAS series, RGLX series, RLE series
5x Operation & 5x Timer flash:
RLS series, RLXS series, CQ series, RQ series, R2 series, RL series, RML series, RMLQ series, CLX series, CLX1 series, RLX series, RLXQ series, CL1 series, CL series, RLQ series
13x flashes on LED 1:
AOU18RLXFZ, AOU18RLXFZH, AOU24RLXFZ, AOU24RLXFZH, AOU36RLXFZ, AOU36RLXFZ1, AOU24RML, AOU24RML1, AOU36RML & AOU36RML1
Continuous blink on Operation & 13x flashes on Timer:
ABU18RULX, ABU24RULX & ABU36RSLX
2 flashes on Power Mode LED, Solid Error LED, 9x flashes on L1, 5x flashes on L2, solid L6 LED:
AOU30RLXEH
9x flashes on LED A, 5x flashes on LED B & solid LED F:
AOU36RLXFZH & AOU45RLXFZ
E951:
AOU48RLXFZ & AOU48RLXFZ1
95 / 1A Wired remote:
UTY-RNNUM, UTY-RVNUM, UTB-UUB, UTY-RSNUM, UTY-DMMUM, UTY-RSRY & UTY-RNRUZ Series
Error Details:
While running the compressor, if the detected rotor location is out of phase with the actual rotor location more than 90 degrees the compressor stops. After the compressor restarts, if the same operation is repeated within 40 seconds, the compressor stops again. If this operation repeats 5 times then the compressor will and the unit will lock out.
Compressor Control / Compressor Location Error Troubleshooting Checklist
- This is a re-settable error code, always cycle power off to the disconnect for a full 5 minutes first to see if error code goes away.
- If error code reappears cycle power back off to the disconnect.
- Ohm the compressor windings out.
- Make sure none of the compressor wires are burnt up or pinched.
- Ohm the condenser fan motor out to make sure the motor windings are intact. See Outdoor Fan Motor Test , Fujitsu Compressor Test
- If compressor and fan motor windings ohm within spec, replace the Main Control board, ACTPM and IPM. (If separate from Main Control board.
VERIFY INSTALLATION!!! LINE SET lengths and traps.

