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Open Roads Forum  >  Tech Issues

 > Big suprise, but it worked! Wouldn't recommend.

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Johno02

Lexington, TN USA

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Posted: 10/11/17 02:23pm Link  |  Quote  |  Print  |  Notify Moderator

Brought rig home from minor repairs shop yesterday, and parked in drive as usual. Everything normal. Decided to check genny, as it hasn't been run in a while. Generac 5500 K system. Fired it up, started OK, and when power switched to it, BOTH 13.5 AC units came on at the same time! Genny bletched a bit of black smoke, picked up the load, and just kept chugging! After a minute to figure what happened, I went back and whut down one unit, then the other. Genny said thanks, and just kept chugging. Shut it down, and all is well! So, for those of you that have and will ask, it will work. I wouldn't do it again, and woudn't recomment it to others. I did forget to check my voltage meter with both running, after thinking about, I would really like to see what it was doing. Not going to try again to see.


Noel and Betty Johnson (and Harry)
2005 GulfStream Ultra Supreme, 1 wife, 1 dog(?)


Dutch_12078

Winters south, summers north

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Posted: 10/11/17 02:46pm Link  |  Quote  |  Print  |  Notify Moderator

We routinely run both of our 13.5 AC's on our Onan 5500 generator. I can't say for sure that both compressors have kicked in at the same moment while on the genny, but they definitely both run at the same time with no problem.


Dutch
2001 GBM Landau 34' Class A
F53 chassis, Triton V10, TST TPMS
Bigfoot Automatic Leveling System
2011 Toyota RAV4 4WD/Remco pump
ReadyBrute Elite tow bar/Blue Ox baseplate


wa8yxm

Wherever I happen to park

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Posted: 10/11/17 04:07pm Link  |  Quote  |  Print  |  Notify Moderator

Done it many times. No problems. It works.... Only both 13.5's have been upgraded to 1500's.. one still draws 13.5 amps (though starting seems a bit more .... hard) the other is 13.9 running.. last time I did it was Monday

Today I need heaters

Man oh man is the weather fun.


Home is where I park it.
Kenwood TS-2000 housed in a 2005 Damon Intruder 377


time2roll

Southern California

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Posted: 10/11/17 04:16pm Link  |  Quote  |  Print  |  Notify Moderator

As long as the generator had not run in a while I would have recommended a solid 20 minute run under load just for good exercise.
Do check the oil level.


2001 F150 SuperCrew
2006 Keystone Springdale 249FWBHLS
675w Solar pictures back up

Johno02

Lexington, TN USA

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Posted: 10/11/17 05:43pm Link  |  Quote  |  Print  |  Notify Moderator

I usually try to exercise the genney on a regular basis. That is why I decided to start it ths time. It just suprised me that the ACs were on.

RJsfishin

Winston Or.

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Posted: 10/12/17 09:35am Link  |  Quote  |  Print  |  Notify Moderator

You wouldn't do what again, run both A/Cs off that genset, or have both switches on while firing up the gen set.
No problem running both A/Cs off that 5500,...that's why its a 5500.

Having both A/Cs on before firing the genset, maybe not the best idea, but it ain't gonna ruin it.


Rich

'01 31' Rexall Vision, Generac 5.5k, 1000 watt Honda, PD 9245 conv, 300 watts Solar, 150 watt inv, 2 Cos 6v batts, ammeters, led voltmeters all over the place, KingDome/sat, 2 Oly Cat heaters, and towing a 2012 Liberty, Lowe bass boat, or a Kawi Mule.


MEXICOWANDERER

las peƱas, michoacan, mexico

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Posted: 10/12/17 09:58am Link  |  Quote  |  Print  |  Notify Moderator

NOT
A good idea to proof generator ability by voltage. Forcing The Field is # 1 cause for Generac voltage regulator failure.

Use a frequency meter on non inverter generators. A 1-2 Hz slump while starting loads is OK. Exceed the 55 Hz "cornering frequency" and you beg disaster. I am fooling around with ELEVEN failed generac voltage regulators to see if they are repairable. The potting removal is proving to be a challenge.

wilanddij

CA Desert

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Posted: 10/14/17 08:55am Link  |  Quote  |  Print  |  Notify Moderator

I admit I haven't really paid much attention to this, but it seems to me that my EMS puts the second AC into "Shed" until the power draw settles down. Doesn't make any difference whether on shore or genny; it works the same.


Will & Di
2004 Southwind 32VS
Workhorse/8.1
Ford C-Max/Blue Ox
"We have met the enemy, and he is us" Pogo

joebedford

Mesa, AZ

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Posted: 10/14/17 09:26am Link  |  Quote  |  Print  |  Notify Moderator

Are you SURE both ACs came on at the same time, or just their fans?

On mine, the fans come on immediately and the compressors come on later at staggered times.

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 > Big suprise, but it worked! Wouldn't recommend.
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