Quote:
Originally Posted by Riley R
Hello, I am involved with a problem on a 39' Teton Frontier 5th wheel. This 5th wheel was equipped from the factory with a tankless water heater made by precision, and has a Suburban F-42 gas furnace. Here's the problem, when the furnace and hot water is used at the same time, the 5amp feed fuse for the water heater blows, but if the water heater is used without the furnace, the water heater works fine, and the 5 amp feed fuse stays intact. the furnace works as designed with no issues. Both are fed from the 12Volt DC buss on separate circuits. This coach has been plugged in for a number of years to a 50 240 volt main feed and parked. The one issue I see that I suppose could be the problem is the batteries have not been serviced in probably the same amount of years as it has been plugged in and parked. So they are dry. Another question I have is in regards to the inverter, I was told if you have a coach and have it plugged in you can turn off the inverter, I turned off the AC power to the inverter and there was no 12volts so lights didn't work and assume nothing else 12volt worked. I then turned the inverter back on and assume I need this piece of equipment. I was also told the coach should have a converter, I see one being powered from the circuit breaker panel but cannot locate any piece of equipment or anything in the equipment manual about a converter. I hope this isn't too much at once but just trying to understand the coach better and see how it relates to the blown fuse issue. Riley R.
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Lets start with the
Inverter. An Inverter is powered by the 12 volt battery. It changes 12 volts into 120 volts. That possibly powers a few 120 outlets or a Residential fridge. You don't have AC power
to the inverter unless you have a Inverter/converter combo. A model # here would help. Do not turn off the inverter'
Next is the
Converter A converter uses 120 volts and changes it to 12 volts for your lights and control circuits and charges the battery. A straight converter will have the 12 volt fuses on it.
That brings us to your fuse problem. 12 volt control circuits use the same circuit for multiple pieces of equipment. My 5er used the same circuit to control the Furnace, Fridge, WH and run the Exhaust fan. Check you fuse panel and see if it is labeled with the fuse sizes and be sure the proper fuses are in their slots. replace your 5 amp with a 7 amp. That's not too big of a step up to protect the wiring to those circuits but may be enought to fix your problem
The WH is 120 volts with a 12 volt control circuit. You can have the batteries load tested but I'm sure they are shot. If not they will be soon.
Linear Mode
