Question about Rinnai Toyostove Direct Vent Heater: Toyostove Laser 73 Shipping

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I HAVE A LASER 72 WILL NOT HEAT GOT A COAD EE 2

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EE 2 has several possible causes.
1. Fuel problem
2. Dirty flame rod
3. Bad igniter
4. Circuit board
If the fuel pump makes a loud ticking or thumping sound, you have a fuel problem. The pump makes this sound because no fuel is getting to it. This can be cause by a dirty filter at your tank, a dirty fuel strainer in the fuel sump, you are out of fuel, or have an air bubble in the fuel line.
If the flame rod is dirty, the heater will light then go out after about a minute.
If the igniter is bad the igniter will not light at all. You can test the igniter with an ohmmeter. The resistance reading should be around 17.2 ohms. I usually just use a clamp on ammeter and see if the igniter is drawing any amps when it is starting. If it is, it is good.
You can check for voltage where the igniter connects to the circuit board. It should be 120vac. If not your circuit board could be bad.
Let me know if you need a better explanation of anything. Hope this helps.

Posted on Oct 07, 2010

  • Rusty Davis Dec 09, 2010

    What is the best way to check for air in the fuel line? I recently moved my laser 73 and had to re-do the fuel line. I'm thinking I might have gotten air in the line. Also, how do you solve the dirty strainer in the fuel sump?

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It saying ee8 blower on da laser 73


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.

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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.

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1 Answer

Getting code EE 2 on a laser 73 toyostove that runs on kerosene


EE 2 usually has to do with the fuel. Does the heater make a loud ticking or thumping sound? That's the sound the fuel pump makes when its not getting any fuel. Check your filter, check the strainer in the fuel sump. Depending on how cold it is any water in the fuel line could be frozen blocking the fuel flow. You might also check the flame rod for soot. It can be cleaned with some steel wool.(nitensheaterservice@embarqmail.com)

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I have a Toyostove Lasr 73 which started complaining of an EE 2 (ignition failure) on startup just this morning. The fuel lifter seems to be working and I can smell a bit of kerosene in the heater, so I...


An EE 2 message can mean 2 things
Ignition never happened or unit did not sense flame
You should see the Igniter glow through the peep window during
pre-heat, easy er to see with front cover off.
If you do see a glow and flame happens, but unit still errors out.
Try to clean flame rod sensor.
Unplug unit.
Single white wire going to burner pot. (pull straight down)
2 screws hold a plate
Turn sensor to 3 o'clock or 9 o'clock position
pull sensor out easily
Clean sensor with sandpaper- down to shiny metal
Good Luck

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Tootone,

Try this lick to REE. They are Toyotomi supplier on the west coast.

http://www.rural-energy.com/publications/catalog/document/334

Tom Hawkins
Bethel, Alaska
hawkins111@gci.net

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CODES


00= 93 14 d0 7e 5c eb 74 4e 01= 30 80 b3 a3 fc 72 6b 3d

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I don't think it is dead. I would have a service tech come out and look at it. The igniter sounds like it's not working properly.What kind of fuel are you useing

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