Question about Rinnai Toyostove Direct Vent Heater: Laser 56 Toyostove Direct Vent Heater

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Have laser 56 that stopped running today. when I turn it on all the lights come on, but do not blink. auto temp display reads 49 and hi but unit will not run. when i unplug thermostat wire from back of unit, fan comes on and runs, temp shows 49 and lo. No ignition. left it on all day still nothing. noticed that relay on back circuit board "sparks" when i plug and unplug thermostat wire. Any ideas? i live in rural alaska and will be needing heat pretty soon.

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Hello Leigh,

With the heater turned on, you should be able to hold the hour and minute buttons at the same time for a few seconds, and get into the manual operation mode. If you are able to get into this mode, then you likely just need another thermostat / sensor. If you cannot get into the manual mode, then you are looking at a controller fault, and you will need to contact the nearest dealer.

BTW, when unplugging the tstat, LO is normal. But HI should only be present when room temperature is above 95F (give or take a couple degrees). Not sure what to tell you about the sparking relay. If the cover is translucent / clear, you will see it as it makes its connection. Otherwise, something bad has likely occurred, perhaps the board faulted. Again, contact your dealer.

I was only able to find 1 dealer / service center in Alaska:
Rural Energy Enterprises
800 770 7330 Ofc
888 408 7330 Fax

Posted on Sep 10, 2010

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Sansung model 56 Inch hpl5663w first had a buzzing sound the tv repair man said it might be a color wheel but the tv played well except for the low buzzing sound . then one night the picture went black and...


Hi Charles,

Sorry for the late reply, I'm offline upon purchasing my service.
You have said that you can hear a low buzzing sound before the unit gone to subsequent shutdown and the lamp blinks green(meaning that the unit try to turn on the lamp for consecutive attempts but not generally mean that the lamp itself is faulty.) and the temp led light come on.

As a matter of fact all the information you have mentioned linked to the symptoms you've encountered right now. A low buzzing sound might be caused by faulty FAN inside the unit that trigger the error code (blinking of the standby/temp led light) and turns off the unit automatically due to thermal protection circuit.
However, the technician might be true also that the buzzing sound came from the faulty color wheel. To confirm it, you have to verify where the buzzing sound came from. Color wheel is in front of the lamp assembly. Faulty color wheel can produce the same symptoms you've encountered right now but most of the time, it shows 3 blinking led light at the front panel (Timer, Lamp, standby/Temp).

I would advice you to open the back cover of your unit, fixed the lamp door safety switch with the tape to make it in closed position( if it is on open position the unit will not power up), and then turn on the unit and observe the fans if will spin or not, and check also where the buzzing sound came from before the unit gone to shutdown.
I've suspected that the fault came from the fan based on the led light flashes. Please let me know what you will discover after following the steps above to verify where the exact fault came from. Also, let me know the exact status of the led light at the front panel, (Timer, Lamp, standby/Temp ), which of them lit solid/blinking, it will help us to narrow the caused of the symptoms.

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How do you program this heater


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1 Answer

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Press the temp/timer button until the temperature icon blinks. Use the up and down arrows to set the desired temperature.
The temperature icon will stop blinking and the current room temperature will reappear after the desired temperature is set.

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Set timer: (auto off)

Press the timer/timer button until the timer icon blinks. The hour display will appear. The auto off icon will also appear.
Use the up and down arrow buttons to set the heater operation time between 1 and 10 hours. This function will activate once the timer icon stops blinking. The heater will automatically turn off whn the times runs out.

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Press the temp/timer button until the timer icon blinks. The hour display will appear. The auto on icon will also appear.
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