My electric went out for 24 hours. I hooked up my generator to the breaker box to power the house. The generator only powers one 110 leg so there would have been 110 going to oneside of the 220 breaker to the hot tub. When the elctric came back on the hot tub would not work. There is a light that says ready on top of the yot tub that will not come on. The Hot tub is old. There is no digital code or blinking lights to help. The hot tub is a Gatsby. What do I need to fix/replace to get the hot tub, ''Ready'' so it will run again?

It sounds like your Dometic unit is not getting power despite the breaker being on. Unless the Dometic unit has an internal fuse to check, I would get out a volt/ohm meter and check to see:
1. Is there power coming out of the breaker that goes to the ac unit?
2. Is there power at the terminals of the ac unit? (You can sometimes remove a ceiling cover to access the contacts on the on off switch.

Lastly is your RV hooked up to full power with two 110 volts on both legs beside the neutral and ground wire? If you are only feeding your RV with a standard 110 volt extension cord and using an adapter, that can mean half the circuits in your RV are energized while the other half 110 volt leg is not. You must energize the second leg by using a full 30 amp or 50 amp dual power cord.

RV's are funny. They require two 110 volt legs with a neutral and a ground. The two 110 volt legs are both of the same phase. There is no 220 volts between the two hot legs as they are in phase. A volt meter between the when hot would read zero volts, while each hot leg to neutral would read 110 volts.

Hope this helps.

I would be checking the main breakers on the panel to insure one didnt trip when you added generator electric. is there a breaker on the outside line at the box you may be missing? Also keep in mind, although uncommon, breakers do BREAK and need replacing. are you competent enough to use a volt meter to check the hot leads on the box and at your unit breaker box to insure you are getting power into the unit? In some older units the switch between land power and generator power was to manually throw breaker switches but automatic processors have replace them now... I would say start at the residential plug in and verify power is where it should be along the route of the supply cord...from the meter forward... if you have a converter plug, say from the 220V 30 amp that you are probably drawing down to 110V household, stick that on the meter and plug in your toaster to insure there is power coming in....IF YOU DONT HAVE A METER AVAILABLE... otherwise...test test test... your generator probably broke a circuit somewhere... now just to find it..

There is a sensor circuit that switches this back, it must be defective.

220 for producing heat 110 for functions and lights

When you say "power box" do you mean the main breaker box in your house? Is the generator hooked up to the breaker that you say trips when the generator is on? There is a short somewhere. First check the generator. Is it running OK. In other words if you plug something into the generator receptacle directly, does it work? If the generator itself works properly, then check the wiring from the generator to the circuit breaker. DO NOT use the generator until the problem solved = safety first.

If this is a 220 VAC dryer use a voltmeter at the wall plug. Chcking from common, usually the leg with the angled blade, to each of the hot legs, each with the straight blade. You need to have 110 VAC in both of these. If there is only 110 at one of the legs the motor will run but the element will not heat. If you find only one leg has 110 VAC try a new circuit breaker in the breaker box. If the breaker is bad it will appear to reset, but still not send current. If you have 110 on both legs check in the dryer for a burned off wire at the timer or element.

Dear Sir:
See the diagram attached, you must USE VOM carefully for to measure the 110VCA. Disconnect the power C.BREAKER from your house. Before to make any job.
God bless you

All travel trailers and motorhomes have different set ups, but the majority of them install the breaker box in the generator compartment, even if it doesn't have a generator installed.

I would run a feeder from the main breaker panel to a small breaker box near the pool pumps, so you have a disconnect near their location. Look at the drawing and see if you have any questions .. What is the amperage reading on the name plate label of each pump motor??

OK, by talking about a plug, I am assuming you have made a double male plug to hook the generator to the electric panel. This is not really advised, because it is so easy for it to be plugged into an outlet by someone not knowing what it is far, and getting electricuted. Now, away from preaching, and to helping.
It is best to hook it to the generator and then crank it, so you are not dealing with a load when you plug the systems together. When your power is restored, it would be good to install a plug to your electrical box and have it go to a disconnect like is on your outside A/C unit. It moves you away from the hot wires.
Hope your power is on soon!