Starting several months ago the exhaust blower makes a constant, steady racket. Local dealer says it is probably fan blades fouled with carbon (as it is in the exhaust stream) or maybe a bad bearing. Being a cheapskate I would like to try to fix it myself. Owners literature is long gone. Does anyone have experience with this problem, and know where I can get schematic and/or parts? If it is really just carbon I should only need gaskets.
I have a laser 72. Several years ago, it began making a racket sounded like the squirral cage fan was hitting something. The only way I found to fix the problem was to remove the blower assembly case and place a small, about 1" long, piece of rubber tubing between the bottom of the motor and the case. This pushed up slightly on the motor which releived the fan. Randy
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Re: Laser 72 exhaust blower noise
The combustion blower sucks in clean air so it has no place in the exhaust stream. hence no carbon build up. the blades of it look like a vacuum disk on a vacuum cleaner. if the fan was recently rebuilt, make sure of the placement of the bushings. if one is misplaced the fan will rub on its housing and make all kinds of racket.
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EE-8 is for a blower motor malfunction. It could be due to carbon build up on the exhaust fan blades. Remove the front cover of the heater. Now locate the blower. There is a black rubber boot that goes from the bottom of the heater to the blower. Remove that boot. Use your finger or a pencil or whatever to reach in the hole and turn the fan blades. You may here a crunching sound from the carbon breaking up. Turn it until it frees up. If it turned freely to start with, you probably need a new blower motor. If it was hard to turn and you free it up, you will probably be OK.Let me know what you find. I have a used blower for a Laser 72 that should work for your Laser 73.
you have something stuck in the squirrel cage of the blower motor.All you need to do is drop the glove box open and look where the cabin air filter is,remove the cabin air filter and reach down there and pull the stuff out;its usually a leaf or napkin.
NO, Rinnai and Toyotomi (Laser) are not the same. A simple Google search would make that clear. Now, a new blower motor with case for a Laser 73 comes complete. Fans, motor and gasket all put together, ready to plug in and go.
You would be better off contacting a local dealer for your parts. NO authorized Toyotomi dealer is supposed to sell parts over the internet. A Toyotomi dealership is a valved item. It is meant to help sell and service the Toyotomi product in the dealers local area. It is a great help for someone to be able to call his local dealer and have that guy come right over and help you out.
Your stove does need to be overhauled. The vibrations are the blower exhaust wheel being out of balance due to carbon build up. If it has been vibrating for a long time you will need to replace the motor. The L73 motor bearings are hard to get off without either bending the shaft or breaking the rev sensor. The burner pot will be another part that may need changing. It may have a warped or cracked bottom. If this is so it needs to be replaced with a new one. The burner ring will have to be replaced as will the mat. Several gaskets will need to be on hand in case you break them. All toll the above will run around $400 or so. It's well worth it considering a new one is $1750 or so. The first thing you need; though, is a service manual. Get in touch with your local dealer and get one. It will make your repair much easier.
Giving the fact that your fan is constantly running and you had an electrical spike you should take it in to be looked at. If it overheats then the motherboard will go and it will cost more to fix it than to buy a new one.
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Got tipped sideways or other in move and the drum is not on the runners.(Felt front and Bogey/rear)... (Some of these you can reposition buy lifting the drum up from the inside and adjust realigning)..