My O General AC is just blinking its lights, no code number — how do I actually read the fault?

O General (which is Fujitsu General) is exactly the brand that catches people out this way, because many of their wall units DON'T show a number, they encode the fault in the blinking lights. The method: when it faults, the OPERATION and TIMER LEDs blink, and you read a two-digit code by counting the flashes, the number of OPERATION-LED flashes before the pause is the first digit, and the number of TIMER-LED flashes is the second (on models with an LCD you may instead see EE:EE, which just means a fault is stored). Once you have that two-digit code, you look up its meaning in YOUR model's manual or service sheet, because the specific meanings are model-specific, that's the honest bit, I won't guess a code number for you, since a wrong lookup sends you chasing the wrong part. To bring the error display up on the remote you typically hold two buttons together for a few seconds (power-save + mode, or temp-up + temp-down on the unit) but again, check your handset. On priority: a code pointing at a fan, sensor or communication issue is often a straightforward repair, but anything the manual maps to refrigerant, high pressure or the compressor should stop you running it and get a certified technician, the same rule as the Daikin code thread and the general error-code guide. Photograph the flashing sequence, it genuinely helps. If it won't clear, AC repair in Dubai can read it on the service tool and confirm.