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I can hear the heater come on but the fan will not start

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It would help to have more information on your heater, age and brand.If it's an older unit it may be a bad limit switch. on both old or newer it could be a bad blower motor or motor start capacitor.On newer models flame sensor may be bad and not leaving burner on long enough to start blower. Sorry I can't be more helpful. One thing you can try is to remove front cover on furnace then cover on blower compartment. Check to see if blower turns freely. Reinstall blower door making sure it is in proper position as most models have a switch on top frame of furnace that must be closed for blower to work. Also check on your thermostat and see if it has a fan or fan on position. If it does switch to that position and see if fan runs.It would help to diagnois if you would time burner when it was on. Hope this helps some. Thanks

Posted on Nov 06, 2010

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When I turn the heater on, the motor sounds like it wants to turn but there isn't any heat coming out


the fan will run whether or not the heater core is getting warm, it does not care. you can hear the fan run, sounds like a fan running. if there is air coming out the vents and you hear the fan running, then the problem lies with the heater core.

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My laser 30,had error code EE8, but i was able to restart..my house is full of the smell of diesel, took off fan cover doesnt move when turned on but did after i turned it off...choking on fumes in alaska


EE8 is the code for combustion blower failure. I'm not sure which fan you checked. You can't see the combustion blower fan. It is inside the black plastic cover on the back side of the heater near the bottom. You can see the motor for it from inside the heater. The blower has a sensor to determine fan speed to control the amount of airflow to the burner. There could be a problem with the sensor. When you turn the heater on the first thing you should hear is the combustion blower start up and run. On the smaller heaters they are very quiet and sometimes hard to hear. Start the heater and see if the blower starts. If it doesn't remove the front cover and locate the blower motor so you can check the wires going to it. I have seen wires that mice have chewed off. Otherwise you may need a need blower motor. If it is running then the sensor is possibly bad and you would also need a new blower motor. Also make sure the exhaust pipe isn't blocked since you say the house smells like diesel. Let me know what you find. nitensheaterservice@earthlink.net

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Laser 73 fire will start but the circulation fan will not start. will eventually overheat and then shut down with EE 2 error. Whats up?


Because you have the EE2 error I would say there is nothing wrong with the circ fan. Your are either having a problem with fuel flow or the igniter. Feel around the two red wires when you try to start the heater. If they get hot you have a fuel problem. If you also hear a thumbing noise you have a fuel problem.

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1 Answer

When i turn on sta rite spa heater , i can hear it start up , and run for about 20 seconds , then shuts off , EO5 appears on control board with red light next to service heater , whats wrong ?


This is an ignition falure code. What you hear is the fan starting not the heater fireing. This can be a number of things and sorry to say but you should have a repairman out to look at the heater. The gambet runs from very frail parts to just plain dangerous and should have a qualified person check it out.

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1 Answer

Fan clicks when starting starting


if your talking about the heater fan that blows heat into the car then remove it and check for dirt or leaves stuck on or near fan. if there are no trash in the blower fan then replace it,most of the time the clicking is not the fan, if the fan is off and you hear clicking then its not the fan, its the blend door acuator and its stripped and you hear it jumping over the gears, if thats the case then replace the blend door actuator motor.hope this helps.

Feb 04, 2010 | 2005 Cadillac Deville

1 Answer

Heayrt won't fire e4 can't hear fan runnung


I am not sure if you have gotten this issue corrected, or not, but the first thing I would try to do is to reset the heater computer system. This sometimes corrects and EO4 error code.

What you will do is open the right hand side door and find the POWER toggle switch, turn that off. Then find the CIRCUIT BREAKER for the heater and turn that off as well, then wait about 15 to 20 minutes. After waiting, you will turn the CIRCUIT BREAKER on first, then the heater. Try and start the heater up.

If the EO4 code comes back, there may be an issue with the heater. If the code does not come back and the heater starts, then the error code was what I call a "computer hic-cup".

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Flame wont stay lit


Sounds like a flame sensor problem. The board is not getting the proper signal from the flame sensor so it thinks the burner did not light and shuts the gas supply off. It keeps the blower operating to ensure that no gas is accumulated in the burner area. I suggest you contact a local mechanical contractor to service your heater.

Jun 23, 2009 | Pentair Minimax NT Heater

1 Answer

Fan shuts down, shortly after heater is turned on


I have a Lennox furnace that starts but won't ignite.
Turn up the thermostat, you can hear it start but the burners don't come on

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