First off, welcome to winnieowners!
Second, you should add a signature to your user profile. It usually includes the year, make and model of your coach, but can include other information. A signature is appended to each post. To create/edit a signature, click on the "User CP" link in the orange bar at the top, then click on "Edit Signature."
Re: The chassis air-conditioning system, this link give background info:
The wiring diagrams for your coach are available here:
Table of Contents
The Automotive Wiring Diagram and Front End Wiring Installation contain information on the location and wiring of the fuse and circuit breaker panels.
Note: A place to look for air-conditioning fuses is under the lift-up dash panel. See the Front End Wiring Installation diagrams.
The "secret decoder ring," which decodes the circuit abbreviations, is here
Page 6-8 in your coach's owner's manual (link here
) refers to the location of (some) chassis circuit breakers.
Winnebago built your coach on either a Ford or Workhorse chassis. The diagrams contain information for both. Make sure you use the sheets and details that apply to your coach's chassis.
According to what I read, Winnebago added third-party (SCS/Frigette) air-conditioning equipment to the Ford or Workhorse-supplied components. This is the usual way it was and is done in the gas coaches. The result of this amalgamation is that it can sometimes be difficult to diagnose the problems.
Both the Ford and Workhorse chassis have a fuse panel under the hood, with fuses and sometimes relays that control the chassis air-conditioning system.