Fan buzz progressive dynamics 4645-
I've installed two of these converters (orig and replacement). Both exhibit buzzing variable speed fans. 1. Nothing wrong with the fans themselves-when they operate, they're quiet. 2. Occurs wh...
Forum Discussion
Thanks for posting this information. I installed a 4655 on Saturday and it has the same problem.
I called Progressive Dynamics this morning and spoke to a service tech. He said the buzzing was normal. I inquired about a capacitor across the fan leads and he said I could send the converter in and he'd install a cap on the circuit board. Then I referenced this forum post about getting a new fan with the cap installed and he said I'd have to speak to the service manager.
The service manager agreed to send a new fan with the capacitor installed.
I asked the service tech why they don't just install a capacitor on all the units at the factory and he said that was above his pay grade. I took a look at the WFCO 8955 I removed and found it has a 220 uF cap across the fan lead connector so I don't know why Progressive can spend $0.10 on a cap and put on theirs!
Regards, Alan
I called Progressive Dynamics this morning and spoke to a service tech. He said the buzzing was normal. I inquired about a capacitor across the fan leads and he said I could send the converter in and he'd install a cap on the circuit board. Then I referenced this forum post about getting a new fan with the cap installed and he said I'd have to speak to the service manager.
The service manager agreed to send a new fan with the capacitor installed.
I asked the service tech why they don't just install a capacitor on all the units at the factory and he said that was above his pay grade. I took a look at the WFCO 8955 I removed and found it has a 220 uF cap across the fan lead connector so I don't know why Progressive can spend $0.10 on a cap and put on theirs!
Regards, Alan
