Question about Rinnai Toyostove Direct Vent Heater: Laser 30 Toyostove Direct Vent Heater Shipping

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I have a Laser30 that catches on fire(overheating?) when it stays on high cycle for too long. What could cause that?

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  • Brian Niten Oct 11, 2010

    I'm not sure I understand what you are saying. Is it actually catching on fire or is it overheating and shutting down on the high limit?



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If you mean the stove overheats and gives you an EE12 message we can help? If the stove catches on fire you have many other issues. An EE12 message is fixed by cleaning the circulating fan screen on the back of the heater. While back there you should clean the fan blades as well.


Posted on Oct 11, 2010


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Fan has 2 settings for the fan; auto & high. when in 'high' mode, the heating element will cycle on/off as if it is in 'auto' mode (i.e., the thermostat will turn the heating element off). but, the it...

A common issue with these heaters is the safety switch which is part of the thermostatically controlled temp switch. A faulty safety switch would result in constant "on/off" cycle as the unit is sensing an over-heated safety condition. If you hear a "click" when it shuts off and then another "click" when it turns back on, it is that switch heating up and cooling down opening and closing the circuit.

The manufacturer must install a "master" kill switch to prevent the unit from overheating and catching fire. A faulty switch may be the issue you have been facing.

End result, more money in getting it "fixed" than what you could spend to buy another heater. All in all, great heater when it works - horrible when it decides to break!!

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Ever heard of a transmission overheating enough to cause fire?

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Dryer will not come on when temp is selected and button is pushed

You have a bad thermal fuse. Take back off. There are two different types. One type is round and looks like other pieces in the back only smaller. It has two wires. The other is 1/2" wide and 2" long with one screw, also with two wires. You can test either one you have by first unplugging the machine, Connecting the two wires running to the piece together. Tape them so they will not touch metal. Now plug machine in and try. It should heat. DO NOT CONTINUE TO OPERATE MACHINE WITH PART BYPASSED This is a high limit safety. It keeps the machine from overheating. If left bypassed it will catch fire. You will also need a cycling thermostat. Kits are sold with both parts inside. The cycling thermostat not working caused the machine to cycle on the thermal fuse until it went out.
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element should cycle a little longer than that i think 2 min then cycles high limit thermostat u checked could be reading wrong when its gets to certain temp that thermostat opens up so wont get so hot and catch on fire .. take thermostat is the smallest one is your high limit thermostat probably the one going bad

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