Fujitsu AOTG54LATL Service Instruction

Duct type inverter indoor / outdoor unit, refrigerant r410a

Troubleshooting

Do you have a question about the AOTG54LATL and is the answer not in the manual?

Information on error codes and how to view the error history on the unit.

Step-by-step procedures for diagnosing and fixing issues indicated by error codes.

Guidance for resolving problems when no specific error code is displayed.

Steps to diagnose issues like no cooling/heating, abnormal noise, or water leaking.

Information on checking compressors, fan motors, thermistors, sensors, and PCBs.

Procedures for checking the EEV, its coil, voltage, and strainer clogging.

Procedure for removing the control box cover and internal circuit boards.

Steps for safely removing the fan motor, thermistors, and drain pan.