I am not familiar with your particulate brand home... but many MH builders use inline GFI breaker outlets. The breaker is built into one of the bathroom receptacles. Often you will find that the exterior lights and receptacle also run off the inline breaker.
Check in your bathrooms for an outlet with small buttons on it. When you find it reset the breaker by pushing the button on the face of the receptacle. If there are 2 buttons, one is the reset and one is a test button.
The GFI in my house trips often after a heavy rain when too much moisture gets into the lights on the corners of my porch.... when they dry out they start to work properly again. Check to see if any of your outside fixtures or outlets are getting moisture.
If it will not reset you may have a ground fault problem or the receptacle/breaker may need to be replaced. You can find replacements in most electric supply departments
LIFTED FROM The Natural Handyman
http://www.naturalhandyman.com/iip/infe ... gfi.html#5
..."A GFI, or ground fault circuit interrupter, is an automatic device that offers personal protection against electrical shock. They are installed in areas where known electrical shock hazards exist... outdoor outlets and fixtures, swimming pools, saunas and hot tubs, outlets in kitchens, basements, bathrooms, and garages. Wherever there is the potential for contact between a person and an electrical appliance in or near moisture, water, or water pipes, a GFI should be protecting the circuit... and you!
All GFIs, have two testing-related buttons on them. One button is appropriately labeled TEST, and one is labeled RESET. Turn on an appliance or light fixture connected to the GFI. Press the TEST button, and the appliance should immediately turn off. If it does not, either the GFI is miswired, there is a problem with other wiring in the same circuit, or the GFI has malfunctioned and should be replaced. Pressing the RESET button will restore power to the appliance or circuit.
Conversely, if you have a GFI that has tripped and will not reset, you may have a wiring short in the circuit, a defective appliance on the circuit, or the GFI itself has become defective.
The easiest way to troubleshoot a GFI is to obtain a GFI tester, available at most hardware stores. It plugs into the GFI outlet, and will supply you with a "snapshot" of your connections, indicating wiring problems and/or the condition of the GFI.
Over time, a GFI will become more sensitive to minor variations in current that are caused by certain types of appliances. Hair dryers and space heaters are notorious for stressing and tripping GFIs. Replacing the GFI will help solve this problem, though it may recur eventually as the new GFI ages."