Replacing an Outdoor Fan

Prerequisites

• An outdoor fan needs to be replaced.
• A spare outdoor fan of the same model is available and functional.
• Tools: Phillips screwdriver, torque wrench, small-sized flat-head screwdriver (2 mm), diagonal pliers, cable tie

Procedure

1. Open the rear door and remove the air filter.
2. Tap Shutdown on the home screen of the display module.

   Exercise caution because the device is still energized after it is shut down on the home screen of the display module.

3. Turn off the active power switch QF1, standby power switch QF2, and drive switch QF3.
4. Open the electric control box of the outdoor unit and turn off the corresponding fan switch.
5. Remove the faulty fan.
   1. Cut off the cable ties that secure the fan cables, remove the cover of the fan connection box using a Phillips screwdriver to a torque of less than 2 N·m, and remove the four cable terminals using a small flat-head screwdriver.
   2. Loosen the waterproof terminal on the cable and pull out the cable from the connection box.
   3. Remove the four screws that secure the fan assembly, and remove the faulty fan assembly.
   Figure 11-6 Removing the faulty fan
   

6. Remove the waterproof connector from the new fan and replace it with the waterproof connector delivered with the spare fan. The required torque is 3.75 N·m.
7. Install the new fan assembly, connect and secure cables, and install the connection box cover.
8. Turn on the fan switch and close the electric control box of the outdoor unit.
9. Power on again, install the air filter, and close the rear door.
10. After startup, choose Maintenance > Diagnostic Mode > Enter on the home screen of the indoor unit display module, set the outdoor unit speed to 100%, run the outdoor unit for 5 minutes, and check that the outdoor fan runs properly and no alarm is generated.
11. After confirmation, set the outdoor unit speed to 0% and exit the diagnostic mode.