Fan runs backwards forces flame to blow back into heater instead

...."I own one just like this and it is true at the beginning I did not know how to make the cold air work but once I play with the buttons everything worked fine. You have to press mode twice then press the minus button until the air gets cold. The instruction are not clear but the item is great, I used it year round." Prem air PCH1033 RC 1 8kw Ceramic Tower with Remote

Sounds like wiring issue to me. I've delt with units like this and there is a wire lead for fan only and a separate one to run the fan when the unit is cooling or heating. I'm only speculating here but I would bet money that this was improperly installed.

Dont get discouraged though because it sounds like its working (for the most part) if you feel up to the task find the manual and check your connections. Otherwise hire a professional.

tank is being turned on to fast and the safety valve will close and not let the full pressure go to the burner same with any new tank that has the columbine valve in it pressure sensitive

Fan control could be on summer switch. or af control not working keeping fun running

Remove the top cover and rotate the fan by hand. If should turn pretty easily. If not may you can put some oil where the shaft passes through the ends otherwise you will need a new motor. If the fan turns easily then the capacitor is probably shot. I don't know if you can get the capacitor seperate from the motor or not. There is a small low pressure compressor attached to the back of the motor. Your problem may also lie in there. The covers come off easily so you can check it out.

Hi,

Check for an air filter....many of these heaters have an air filter that gets dirty or clogged and then they will do just what you are describing her....

also take an air hose and blow out everything....

What you have there is an air/fuel mixture problem...
you are not getting enough air to the burner... most like because of dirt...

The only other explanation would be that the blower is no longer running at full RPM's....

You could also try to get some oil on the shaft of the motor to lubricate it and get it running back to full speed again...

Check the fan blades for dirt also...

heatman101

A bad capacitor can cause the fan to act like yours. I would check that first.

When the cover is off it totally changes the airflow through the burner chamber. There is no thermal overload on this heater. The flame sensor not sensing flame is what causes the heater to shut off. Make sure the fuel filter is clean. It is located under the grommet where the fuel line enters the tank. Remove the nozzle and clean it by blowing backwards through it with compressed air. If the heater is very old the nozzle should be replaced. Set the air pressure to between 4 and 5 psi. This should cur your problem. Let me know if you have any questions.

1st take a air gun and blow in the fan to clear of debris. 2nd make sure to push your reset button on the back by your fan. Last you can calibrate your flame/heat by removing the fan housing & you will find 2 set screws try a small 1/16 turn on them and try to run, should run better for you.

Hi sounds like the pressure switch is faluty try jumping out to see if it starts