Question about Rinnai Toyostove Direct Vent Heater: Laser 30 Toyostove Direct Vent Heater Shipping
My L-30 is the new replacement heater from the dealer since my first one became a problem, and now the second one has developed the same problem. There are no error codes, it puts out heat, but it would wake the dead in the same room with its startup noise that sounds like several blow torches at once, or a cat fight in the room with you. Both of these heaters started out perfectly, no noise, only felt heat, could barely hear the fan, even when it cleared the heat to shut down when it finished its cycle. Both heaters, after about four days and nights, began this growling, mad cat noise that wakes me from a deep sleep. My L-73 in the front part of our house works perfectly, no noise, just burner lights blinking and we feel the wonderful heat, just a faint purr from the fan, and it is fed from the same 300 gallon tank of K-1. A service man tried to convince me that, 'whisper quiet operation' did not mean that Toyo stoves were supposed to be quiet all the time. My question: If the L-30 worked fine the first few days, what could have happened to cause the noise? It is flame noise, and it reduces or sometime stops completely as soon as the main circulating fan kicks in. Nobody seems to have any idea about, or understands this complaint.
Before the heater starts up, the combustion blower starts to purge the chamber of unburnt gases, then the solenoid pump, pumps fuel onto the burner mat, shortly thereafter the ignitor turns on and ignites the kerosene. what you are hearing is the combustion blower. its a small motor with a rather large vacuum impeller on it. it sounds like a jet engine when it first starts. there are two bearings on this motor shaft. yours evidently are dry - no lubrication. replace the motor or if you have the equipment purchase two sealed ball bearings and press them on the shaft.
Posted on Nov 10, 2007
Since you have had the same problem with two different heater I think you have a problem with the flue pipe system. A Laser 30 is a very reliable heater and should not be noisy. There is some problem with either the exhaust or the air. Make sure the hoses are connected correctly. Did you install the air damper in the air chamber when you installed the heater?
Posted on Jan 06, 2009
How high is the tank that feeds both of the heaters? If the top of the tank is more than 8.5 feet higher than the floor that the Laser 30 is sitting on then you probably have to much fuel pressure. Does it make high yellow flames in the window, as it is making the howling noise? The high fuel pressure is forcing more fuel into the burner than it can handle when it is burning on low. When the circ fan kicks in on high, the air intake fan RPM also increases which may allow it to get enough combustion air to make this noise go away. If this is right, you will need to install a fuel pressure reduction valve inline between the tank and the Laser 30.
Posted on Nov 21, 2007
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Posted on Jan 02, 2017
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