6000 tl inverters

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cookerobert21

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East Yaphank New York
Has anyone had any issues with the 6000 tls with the fans on the unit becoming too loud I just swapped out two 6000 for two different sites with homeowner's complaining that the fans are too loud I replaced both units last Friday and both homeowner's called today stating that the issue has not went away. But one homeowner said that the fan only was noisy when the sun hit the array during a certain part of the day so I am thinking this had something to d with it. Any insight would be helpful thank you

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Does fan speed change as a function of power produced? I'm no solar guy; that's just what came to mind.

It seems to be common to that brand & model. I'd call the manufacturer and tell them your customers are saying their products are unacceptable and ask them what they can do about it.
 
mgookin said:
Does fan speed change as a function of power produced? I'm no solar guy; that's just what came to mind.
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I'm pretty sure the fan is controlled by a temperature sensor inside the inverter.
 
GoldDigger said:
With software as an intermediary though, so it might be a bug.
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Might not be a bug at all. Could be as designed. Highest fan speed during the time of highest production, highest ambient temperature , and greatest heating from sunlight seems to say it is working somewhat as intended. The question is whether the speed and noise level is within design parameters.
 
Smart $ said:
Might not be a bug at all. Could be as designed. Highest fan speed during the time of highest production, highest ambient temperature , and greatest heating from sunlight seems to say it is working somewhat as intended. The question is whether the speed and noise level is within design parameters.
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I agree.
 
Smart $ said:
Might not be a bug at all. Could be as designed. Highest fan speed during the time of highest production, highest ambient temperature , and greatest heating from sunlight seems to say it is working somewhat as intended. The question is whether the speed and noise level is within design parameters.
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It also could be a function of what the composition is of the wall the inverter is mounted on. Vibrational noise from the inverter can be transmitted to the wall and therefore be much more audible.

Where is the inverter mounted? Usually we put them on exterior walls not opposite living areas or bedrooms. Is the customer hearing fan noise from the inverter itself or from vibrations of the wall it is mounted on? For him to be hearing the fan directly it would almost have to be mounted somewhere inside the building; that in general is not recommended.
 
ggunn said:
It also could be a function of what the composition is of the wall the inverter is mounted on. Vibrational noise from the inverter can be transmitted to the wall and therefore be much more audible.

Where is the inverter mounted? Usually we put them on exterior walls not opposite living areas or bedrooms. Is the customer hearing fan noise from the inverter itself or from vibrations of the wall it is mounted on? For him to be hearing the fan directly it would almost have to be mounted somewhere inside the building; that in general is not recommended.
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The inverter is mounted in their basement and he is hearing the noise from the inverter

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iwire said:
I will bet a dozen doughnuts that the noise is the fan blades and nothing to do with what or how it is mounted.

Like fans in servers, just loud at full speed.
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OK, but why is noise in the basement a problem? If it's because it's a basement used as living space, then why is the inverter in there? Inverters make noise, especially the fan cooled models; there's probably nothing wrong with the inverter.
 
Some houses (like mine) do not have good noise isolation between basement and first floor because there are no expected noise sources or living area in the basement.
 
GoldDigger said:
Some houses (like mine) do not have good noise isolation between basement and first floor because there are no expected noise sources or living area in the basement.
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I wouldn't know. I grew up in south Louisiana where a basement rapidly becomes a swimming pool. :D
 
ggunn said:
OK, but why is noise in the basement a problem? If it's because it's a basement used as living space, then why is the inverter in there? Inverters make noise, especially the fan cooled models; there's probably nothing wrong with the inverter.
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My basement only has subfloor and hardwood between it and the first floor. I would here a loud fan.

That might be fine, but if the customer was not made aware there would be noise with an inverter I am sure they expected the equipment to be silent.
 
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