First, if you don't mind, could you use capital letters, punctuation and sentence structure as the lack of capitals and sentence separation makes your post very difficult to read. (thanks!
) I will do my best to respond to various points from your post.
during winter storage, as i was told, i would leave it plugged in
Many people do leave their RV connected to shore power all winter while in storage but I prefer not to do so but I do lift the battery cable from the negative battery post to leave everything on an open circuit.
manuals said even though it was a gas/ac frig, the operating panel was dc .
Al RV refrigerators use 12V power from the batteries or the converter to operate the controls while using either propane or 120V power as the source of heat for the boiler in the cooling system. That is done partly so that it can automatically shift between the two energy sources and it means that the refrigerator will operate from propane when it doesn't have any 120v power.
i was told to disconnect the house battery and the house power button , to reset a switch?
I'm not sure what it is that you want to reset. You may have a battery isolator that uses a switch to control a solenoid that disconnects the battery for storage when not in use.
house batteries read 13.3, breaker panel has 13.2. 1.no land--no power anywhere,
If you are connected to shore power the converter typically converts that into around 13.4V, +/- .2V in most RVs. If you have the RV connected to the outside 120V power and measure across the batteries you should be reading the voltage out of the converter, especially if nothing else is in use. By no power anywhere, do you mean that you have no 12V power, as in the lights, furnace, etc.?
2.land line only--110ac outlets work, micro,.....nothing else,
That would be the things supplied by 120V power which do not need 12V power to operate control circuits. It would seem that you do not have any 12V from the batteries, or from the converter, either of which should supply power if all were as it should be.
3.generater only--110ac outlets, micro work.....nothing else,
This seem to fit with the situation from shore power as they both get distributed the same way and to the same items.
4.engine on only-- frige panel turns on, smoke/co2 detector on .....no 110 ac. notes: converter fans are not on.
That would indicate that your engines 12V system does connect to the RV's 12V system just as it should when running. The engine does not supply any 120V power so it is very normal that without either shore power or the generator running the air conditioner and microwave will not work.
Let me suggest that you take the time to read
The 12V Side of Life, written by Mark Nemeth of the Escapees RV Club.