Applicable Systems
VRV IV-S
Symptoms
The air conditioner reports an indoor fan motor fault. The indoor blower motor is not operating correctly.
Possible Causes
- Motor winding failure or bearing wear
- Motor driver circuit fault
- Fan blade obstruction causing overload
Troubleshooting Steps
- Step 1: Test the motor winding resistance
Resistance is within specification - Step 2: Check the motor driver circuit
Circuit operates correctly - Step 3: Inspect for fan blade obstructions
Blades rotate freely
How to Reset
To reset: Repair or replace the indoor fan motor, then clear the fault.
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Source: Daikin Air Conditioner Service Manual, Daikin Industries Ltd.
Category: HVAC Residential
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