Hi @bca1962
Here's the [https://www.manualslib.com/manual/642780/Panasonic-Fv-08-11-15vql4.html?page=10#manual|wiring diagram] for the unit from the service manual.
Use an Ohmmeter to check if the fan motor winding is OK or burnt out.
If the motor is faulty the part number is FFV3700234S (I think). Check on fan motor to verify. There is a parts list in the manual but it is for 3 models and maybe I linked the wrong number.
If the motor is faulty search online using the ''part number only'' to find suppliers that suit you best.
Is the interference still there with only the light on? If so it may be the ballast for the light. Happens sometimes with fluorescent lighting