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 > Generator - A/C issue

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Glenn And Kitty

Breaux Bridge, LA

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Posted: 03/12/20 01:51pm Link  |  Quote  |  Print  |  Notify Moderator

The gen is rated well above the capacity of the A/C and is evident that it is capable of easily handling the load(s) in eco mode as it only rises to 3050 RPMs from 2650 RPMs and does not go into overload. I don't usually do it so as to ease the load on the gen but, with the gen in eco mode, I have had on the A/C, microwave, coffee pot, and electric water heater all at once. The gen did kick up to full throttle speed (3450 RPMs), but it did not go into overload.

If the issue was happening in reverse, that the gen would go into overload when running on eco mode but would handle the A/C compressor kick on in full throttle mode, I would agree with the "hidden" usage idea but since it works fine at the lower eco mode RPM it must be something with the gen advancing when in full throttle mode, even though it should not, that is perhaps causing the overload.


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2oldman

New Mexico

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Posted: 03/12/20 02:02pm Link  |  Quote  |  Print  |  Notify Moderator

How do you know the Rpm?

Chum lee

Albuquerque, NM

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Posted: 03/12/20 02:06pm Link  |  Quote  |  Print  |  Notify Moderator

duplicate

Glenn And Kitty

Breaux Bridge, LA

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Posted: 03/12/20 02:10pm Link  |  Quote  |  Print  |  Notify Moderator

I know RPMs cause mu gen has an RPM meter.

I may have screwed up and duplicated my post.

Glenn And Kitty

Breaux Bridge, LA

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Posted: 03/12/20 02:18pm Link  |  Quote  |  Print  |  Notify Moderator

The gen is rated well above the capacity of the A/C and is evident that it is capable of easily handling the load(s) in eco mode as it only rises to 3050 RPMs from 2650 RPMs and does not go into overload. I don't usually do it so as to ease the load on the gen but, with the gen in eco mode, I have had on the A/C, microwave, coffee pot, and electric water heater all at once. The gen did kick up to full throttle speed (3450 RPMs), but it did not go into overload.

If the issue was happening in reverse, that the gen would go into overload when running on eco mode but would handle the A/C compressor kick on in full throttle mode, I would agree with the "hidden" usage idea but since it works fine at the lower eco mode RPM it must be something with the gen advancing when in full throttle mode, even though it should not, that is perhaps causing the overload.

philh

Belleville MI

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Posted: 03/12/20 08:41pm Link  |  Quote  |  Print  |  Notify Moderator

ndrorder wrote:

When the generator is first started, the converter will be trying to charge the batteries. That can be a significant load in addition to the A/C. When turning things off, that should also include the breaker to the converter.

Then why does it work in eco mode?

Glenn And Kitty

Breaux Bridge, LA

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Posted: 03/13/20 12:21pm Link  |  Quote  |  Print  |  Notify Moderator

I agree with phil's question as to why it works in eco mode if it's a hidden usage issue or battery charging operation.
I spoke with a Yamaha tech at a dealer and while he was puzzled by the issue and said it was a real head scratched, he also said I should not worry about starting the gen in eco mode.
While there is no real exact answer to the default overload when compressor kicks in and gen is in full throttle mode, as long as the A/C works in eco mode my wife will be happy... and you know I'm happy about that.
Glenn

Chum lee

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Posted: 03/13/20 04:00pm Link  |  Quote  |  Print  |  Notify Moderator

Glenn And Kitty wrote:

The gen is rated well above the capacity of the A/C and is evident that it is capable of easily handling the load(s) in eco mode as it only rises to 3050 RPMs from 2650 RPMs and does not go into overload. I don't usually do it so as to ease the load on the gen but, with the gen in eco mode, I have had on the A/C, microwave, coffee pot, and electric water heater all at once. The gen did kick up to full throttle speed (3450 RPMs), but it did not go into overload.

If the issue was happening in reverse, that the gen would go into overload when running on eco mode but would handle the A/C compressor kick on in full throttle mode, I would agree with the "hidden" usage idea but since it works fine at the lower eco mode RPM it must be something with the gen advancing when in full throttle mode, even though it should not, that is perhaps causing the overload.


I find no specifications for an "EF3600ISDE" generator made by Yamaha. I am assuming it to be a 3600 watt peak genny, if it exists. (you referenced the above number in your initial post)

I do find one for an "EF6300ISDE" generator. (6300 watts peak) Is that what you mean?

If so, that generator should have plenty of juice to start/run a 13500/15000 BTU AC unit. (and lots of other stuff too) But before you waste more time, can you please confirm this? (or post the actual model that you do have)

Chum lee

Glenn And Kitty

Breaux Bridge, LA

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Posted: 03/13/20 05:31pm Link  |  Quote  |  Print  |  Notify Moderator

Reply to Chum Lee question:
Gen is a Yamaha EF6300ISDE. I believe the peak (surge) watts are 6500 with 5500 watts being the rated watts in normal running range. The gen is about 5 years old but only has 185 hours on it. I also think the A/C unit on my RV is rated at 13500 BTU

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