I believe by your description and my 8 years experience with Toyo Stove repair that you are missing part of the firing sequence. The firing sequence for a Toyo Stove L 56 is to blink on the burner light for 7-9 minutes, then it clicks up to the medium light (amber-yellow color). The medium light blinks and that is when the fuel pump kicks on and starts to pump. If the stove ignites, the medium light will glow for a second and then drop down to the low light (green) The low light will burn for awhile and at this time you will see a blue flame in the newer heat chamber models or a red glow, and perhaps some blue flame in the older heat chamber models, then the stove will kick up to the medium light for a bit, and then to the high light. An EE6 error code will show only when the flame is extinguished after actually taking place and a burn did occur in the chamber on low. An EE6 is usually one of 2 things: 1. There is an inadequate fuel supply for the stove to maintain a low cycle burn, or the medium, or high. Each cycle consumes more fuel than the prior one. Inadequate fuel supply can be due to a restriction in the fuel line such as icing like cholesterol in a persons arteries, or a plugged sump screen, blocked fuel line or filter, too low a quantity of fuel in the tank, or a fuel line that is not all gravity feed, as in, the fuel line runs down, down, and then up a few feet to get to the Toyo. In that case, the fuel has to rely on head pressure to get to the stove. Head pressure is the atmospheric pressure pushing on the fuel in the tank to force it up against the earth's gravity forces. Solution: You can find any restriction in the line, replace the filters, clean the sump screen, put heat on the fuel line to thaw any icing blocks. 2. An EE6 can be caused by a carbon chain developing from the burner ring, flame sensor or chamber wall to any metal part in the burn chamber. A carbon chain essentially "shorts" out the ground for the unit and the Toyo will shut off on EE6. Solutions:You can bang the side of the Toyo (Old frustrated Alaskan solution) which really just jars the carbon chain loose, clean the flame sensor, clean the fuel nozzle with a straight 3 inch wire, and stick a screw driver in the igniter (red wires) hole and rattle it around real good (another old Alaskan trick). Often, those three things will get your stove running again if it is a carbon chain. The problem will likely occur again, but it will buy you some time until you can get a tune-up done. Most likely, you need a tune-up. Question: When was your last tune-up? Toyo's should be tuned up every 2 years. Tthe book says every one year, but in my experience, every two years is the best bang for the customers buck. The three year mark usually begins showing signs of metal fatigue in other parts of the burn chamber/heat exchanger system so the costs rise a little each year, unless you are a lucky Toyo owner and for some odd reason, your stove can go 3 years between cleanings without any ill effect. If you get your stove running, run it hard on High for about 2 hours to clean and burn all the carbon out. Good Luck! toyotech, North Pole, Alaska
Feb 12, 2008 |
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