Vince Toscano

Hi Can you tell me the model number of your fridge? Have you looked at the coils in the back of the fridge? If so do you see any signs of a yellowish substance?

Hi The configuration of contactors is tiplical of a forward/reversing for a 3 phase motor. I am not sure but based on your description it sounds like the control board has failed, contactor on my part. This pair on contactors has a mechanical interlock between them to make sure only one is sending power through to the coach. Although some parts can be replaced, I would be leary of just rebuilding only because of the mechanical parts wear with time. If these contactors fail, shore power and generator power could be bucking, or back feeding, If not on the same phase a short. Risking damage to the generator, shore power breaker panel and or fire.

Yes they are under the cover. Make sure to disconnect the power. The 4 switches are about 1" diameter. 2 wire connections each. It sounds like it's the 2 temperature switches associated with the diesel side of the controls. You can go to aqua hot web site and down load the manual. Just need you model number.

Did you check the temperature switches, mounted on the Aqua hot boiler tank? There are 4, 2 for the electric side and 2 for the diesel side. there is a low side when to turn on each and 2 to turn of either of the electric or the diesel.

Hi do you have hydraulic leveling Jack's?

the only issue that can be causes if the batteries are being drained so low that the charger will be maxed out. Any time you max any device you add undue stress. Find out what capability of your charger and compare it to what your batteries will need at different percentages of charge needed to bring to being full charge. If you plan to change the inverter charger out to meet the demand of the new battery configuration you may what to look at what is available in the market place.

yes you can configure 4 batteries to supply 12 vdc. Series 2 of the batteries and the other 2 batteries in parallel with the other 2 batteries.

You also could use a standard battery charger when running your generator. Did you check the voltage at your battery terminals with the engine off and running? With the engine running it should be around 14 volts.

Did you try your Aqua Hot on Diesel fuel? Do you have more than one zone? do your thermostats have the display on?

the question that comes to mind on the IT-50R is, what was the relays in the switch rated for? In there online manual it states it good for 50 amps. And if you look at the manufacture of the relay it would state how many cycle it was tested for. Typically a power relay can open and close under full load with no problem. as long as the cycle of use are not exceeded. This is not likely in this use.

Typically when you are not using batteries, a battery tender will help you preserve your batteries health. A few years ago I stated to use a battery tender on my motorcycle because it will sit through the winter months. It really works. This may help in preserving your chassis batteries while in storage. If you have a newer inverter/charger it will serve the same function for your house batteries. Making sure the selection of battery type is used when programing the function in the control panel of your inverter/charger. Your coach needs to be hook up to shore power. Typically 2 batteries is sufficient for your chassis power needs. It's main draw is to start and run you engine along with a generator.

Hi Rpasetto, Are you having issues or issues in the past with how the engine is starting? Vince

Hi Bo, Sorry to hear about the issues with your coach. Do you have the electrical print for how the transfer switch and inverter are tied together? Do you have a sub panel coming off of your inverter? The manual for the transfer switch makes claim it's good for 50 amps. thanks, Vince

Hi I've used Russ Trucking last year. They have an agreement with Tiffin to work on there Motor coaches. If you are in the Northwest, Henderson in Grants Pass is a great place to have work done on the chassis.

HI Dan, It looks like there are mounting bracket underneath of the stove top. https://www.whalepumps.com/marine/siteFiles/resources/docs/resource-library/SeawardInstructions/1273227622773276G3278Manual.pdf