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rambow's avatar
rambow
Explorer
Aug 21, 2015

Generator Transfer Switch Woes

I am presently trying to deal with an intermittently operating generator transfer switch on the '99 Southwind 36Z I have owned since new. Sometimes after starting the gen set it will kick in after the designed delay and furnish 120v to the coach. Other times it will not. My first problem was locating the darned thing. I knew from the clearly audible click when it works that it was somewhere behind the electrical service panel under the fridge. I have read posts from other Fleetwood owners of similar vintage coaches that it is mounted on the back of the ESP box. So, after disconnected from power, I tried to pull it out. But the electricians who built my coach did not leave enough slack in the wires to pull it out more than a couple inches - not enough to see behind it.

Having had to replace the power convertor twice over the years, most recently this spring, I knew another way in. This involved removing the dinette table, then the cushions and plywood top of the aft dinette bench. I had to pull out the under-seat drawer and remove the rear drawer slide. The converter sits just inside the compartment under the refrigerator which is open to the dinette seat box. Using my handy-dandy telescoping inspection mirror and flashlight it was obvious the switch was not mounted on the ESP box. It had to be somewhere else in the space behind the panel. I had to disconnect the new converter and remove it, after which I located and identified the transfer switch behind and beneath a spaghetti mess of wiring. The switch box was not anchored to the floor and the lid, which is normally secured by clamps and a screw, was off and laying beside it.

By pushing some of the overhanging wires out of the way and holding my phone at full stretch into the tangle I was able to get this photo of the Transfer Relay Delay, as the cover labeled it.



The cover identified the part and Fleetwood has them for $167. So just order it and replace the darned unreliable gizmo, right? Well the electricians who wired this mess at the Fleetwood factory in Paxinos, PA never gave a thought to the poor tech or owner who might have to replace such components down the road. As with the service panel, there is no slack in the wires coming into or exiting the box so it can not be pulled close enough to work on, even if you could get it through the Medusa's hairdo of wire in the foot-high cave.

So unless anyone can recommend a twelve-year-old contortionist who can fit himself inside the dinette seat, has the arms of an orangutan, and can make electrical connections while holding an inspection mirror in his teeth, I'm afraid my only option seems to be to have the fridge removed to get at it from the top. On the other side of the compartment is the front furnace sitting beneath the washer-dryer, so no joy that way, either.

Has anyone else run into this particular nightmare who can offer me any bright ideas?
  • Old Bounder, I was able to get at the transfer switch following your specific directions, verify that all the connections were tight, and carefully clean the contacts with some 400 grit paper. The switch now seems to be working reliably (fingers crossed with a couple big trips coming up beginning Monday). I never would have found the thing on my own. Many thanks from this Old Southwind.
  • When you remove the plate that covers the fuses, located on the right side facing the breaker panel, you may find that the transfer switch is accessible behind the fuses. It is replaceable.

    From your symptoms, I would guess that you will eventually find a loose wire or two, or you may need to carefully clean some of the relay contacts on the switch. The switch is just a big heavy duty relay (contactor).

    Here is a link to a replacement relay.
  • OnaQuest wrote:
    The second problem is that the MAIN transfer switch (the one you ARE looking for) is indeed mounted on the back side of the main breaker panel. It is actually inside the panel as an integral part of the box. If you take the front cover off the circuit breakers, you will see the Black and White wires coming through a hole in the back of the panel to the main breaker. They are coming from the transfer switch.


    So, if I understand you, the main transfer switch is mounted inside the box, rather than on the outside rear surface of the box as I understood (misunderstood) from previous discussions. Is this integral switch separately replaceable, or must I get a whole new box?

    Now I must wait for daylight to go crack that panel again and have another look.

    Thanks very much for setting me straight. It would have been very frustrating to go through the refrigerator removal and replacement of the wrong component, only to find the original problem still plaguing me.
  • I two would do the fridge removal. You will probably find a solid floor under the fridge. That will require a access hole . cut it out in the round and get a plastic boat deck plate at a boat shop and install. That way there will always be access to that area. Get the 6 or 7" deck plate before you cut the hole so you know how big to cut it.
    Remember job planning.
  • You have two problems.....

    The first problem is that the Transfer Relay Delay (transfer switch) that you found is NOT the switch that you were looking for. This switch is actually part of your Intellitec Electronic Climate Control system. The TRD is the transfer switch that hooks your front air conditioner to the 20amp output of your generator to allow both air units to operate reliably and simultaneously on generator power. The transfger switch is closed by the 20amp feed when the generator is running. See this Manual. page 9 The MAIN transfer switch is the one labeled "Change Over" at the top of that diagram.

    The second problem is that the MAIN transfer switch (the one you ARE looking for) is indeed mounted on the back side of the main breaker panel. It is actually inside the panel as an integral part of the box. If you take the front cover off the circuit breakers, you will see the Black and White wires coming through a hole in the back of the panel to the main breaker. They are coming from the transfer switch.
  • No, But pulling frig is the easy way. Gas ,water, 12v power, Unplug 110v plug screws on front. Two five gallon plastic cans, Build up cans with plywood, 2x12 or what ever is handy and slip frig out onto them.

    Miss a step, put a rug under the cans so you can slid them . Have fun, my heater is under my frig.

    You should see a Fighter plane, build the same way. Everything build on top or everything. All space is full.