Laser 72 when burning on high i can smell fuel and it smells up the whole house. while running and what to do about the smell while the fan is on and working fine. i also have problems with my laser 73 terrible exhaust fumes. but i think the problem is unburned feul??

Are you loosing radiator fluid. sometimes the heater core will rupture and you will smell burn odor. also check for strange rubbing sounds or screeching coming from the blower fan motor. or engine exhaust manifolds are hot when car is on, make sure nothing is leaning on them which will cause a burn odor. Any odor coming from outside will find it's way inside through the fresh air vents.

Good Afternoon Friend,

I understand that you are receiving a burning rubber smell from your Frigidaire microwave. I also see that your appliance will run for a couple of seconds, and then you hear a weird noise, followed by a burning rubber smell. I suggest contacting your local authorized technician, especially when dealing with your microwave. They will be able to diagnose your appliance and determine what is causing that sound as well as the burning rubber smell. Hope this is helpful.

-Best Regards-
WP

do you turn on fan when using a/c ! if so heres a few causes-- burning smell in car, blower motor is going bad, or resistor is burning up.the resistor controls the fan speeds. good-day !

The burning smell could be due to gas leakage in the engine compartment. The gas smell is being sucked into the fresh air intake of the air conditioner. It can be avoided by checking either fuel pressure regulator or fuel injector.

The chimney needs to be 3 feet taller than the highest point of the house . If you are running the clothes dryer, bathroom vent fan, or exaust hood in kitchen it makes a vacum in the house that can draw smoke into the house down the chimmney . I think when you burn wood or coal in a house it is pretty hard not to be able to smell it. Our house and clothes do not smell like smoke any more since we stopped burning wood.

if the smell is foul smelling the windings in the armature of the motor are shorted out against the metal housing of this armature. You need a new motor or replace the fan

Check the fan cage on the back, it should be cleaned to allow for adequate air flow. Be sure curtains are not getting pulled up to the fan cage.
This could also be due to a crack in the pot, or if you put too much fuel treatment in your fuel. Regardless of what is causing the overheat situation, an L 72 is a very old unit. You may not want to invest a great deal of money into repairing this unit. The manufacturer has discontinued several parts for the L 72 such as the main circuit board and the burner rings. Without these parts, you are out a heater.
If you can clean the fan cage and remedy the problem, that would be great. If it is a cracked pot, and you decide to replace, be sure that you know how long it has been since you replaced the ring. A ring in a Laser lasts about 7 years. If your technician does not have rings in stock, you could be out of luck when your unit needs a ring.
Be sure to plug the unit into a dedicated outlet and use a quality surge protector with at least 450 Joules to help protect the board. Hope this was of some help. If you have any further questions, visit www.keepuswarm.com. We do have inventory of these discontinued parts for Laser heaters if you decide to repair and your technician cannot get the needed parts.

most like it the motor windings are burn and you need to replace the blower motor

It sounds like it may need a new wire assembly.
I bought mine here
http://www.shopjandl.com/
and they also helped me with my other ride on toys.
My grand children have several of these so we are always getting parts for them.
hope this helps

Check the tank open/ if you fume detector you may detect it sometime some leak within distrbution hose clamp expanded hoses can be cause of leak.