Originally Posted by Okiegent
Andy does the furnace just need to be cleaned out you think? I am not a professional, however I have always done my on work. Is this a task that I might be Abel to do my self? I am fairly mechanically inclined. Do you think it would pay to replace it if I cannot overhaul it as you say. With a newer more efficient heater.I just bought this trailer this pass Thursday. It is super clean inside and out. It was our intent to bring it back up mechanically as top shape as possible. The trailer is a 1983 excella 31'. As long as we are on the subject of repairs. The air conditioner compressor does not kick on. Any Ideals on that? Could anyone tell me what a quality air unit and furnace unit would cost for this trailer. Both being efficient. I do appreciate you kindness in trying to help out here. We are new here to this forum and have already noticed the willingness of everyone to help. What a wonderful Ideal in this day and time. Thanks in advance for you help.
A furnace thats 27 years old, is sort of like a person, in a small way.
It needs a "physical".
Who knows the what the history of the furnace, might be?
That is not something to guess about.
When the furnace is on the bench, it should be disassembled, for cleaning and inspection. Since it's been blowing out some soot, the combustion chamber will need to be thoroughly cleaned out. That cannot, in this case, be done with air. Running plenty of water thru the combustion chambers (several chambers) will eventually clean it out. Next, all the gaskets will need replacing. Then what is the condition of the burner log? If it's look ok, then it's wise to run a "hack saw blade" thru the slots, but gently. That will clean the slots out. The condition of the blower motor is sort of subjective, in that "how well is it running"? Is it up to speed?
Then you can supply some LPG to the furnace, and see how it runs, "ON THE BENCH". You will have to adjust the "air mixture" for a proper flame. You should also determine "WHY" the air mixture went south. If you find it way out of adjustment, then what "caused the mis-adjustment"? It cannot change unless forced to do so.
The air mixture setting can be disturbed by vibration. That vibration can be from several different things or a combination of things. Excessive rated tow vehicle, excessive rated hitch torsion bars, lack of or improper running gear balance, and even axles that have had the rubber rods fail.
Make sure you use the LPG regulator for the hookup. The LPG pressure should be 11 to 13 inches of water column pressure, preferrably 12 inches.
Make sure the battery for the test has a full charge.
If you cannot do the above, then have an RV shop do it for you. If you do that, "MAKE SUPER SURE THEY CLEAN THE COMBUSTION CHAMBER THOROGHLY"
The AC problem can be caused by a loose wire in the thermostat circuit, a thermostat that needs repair, a bad relay in the AC, or even a compressor failure. When you tst the AC, make sure that an extension cord (if your using one) is at least a 10 gauge cord, but no longer than about 25 feet.
I cannot post prices on the Forums on anything that we sell, since we are a vendor.