Empire DV-40 problems

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  #1  
Old 02-16-15, 01:25 PM
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Empire DV-40 problems

Hello,

I bought an Empire DV-40 heater that is LP. I have it all hooked up but it will not work. When I first tried to start it up it would turn on and the inducer would come on and then when I looked into the burn window I could see the ignitor turn red, but it did not fire.
I tried to turn it on again and nothing happened. Now all the inducer is doing is humming.

I am not really sure what to do now, any help would be appreciated.

Thanks
 
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Old 02-16-15, 06:46 PM
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There should be a blinking light on the control board but my guess would be the pressure switch is not closing. Here's a link to the manual: Empire Comfort Systems DV-40E-5 Manuals
 
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Old 02-16-15, 06:54 PM
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Yes, there is a blinking light. I am getting 3 blinks.
 
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Old 02-17-15, 01:57 PM
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Three blinks indicates a pressure switch closed with the inducer off.
If you have an ohm meter you can verify the pressure switch by turning off the power, disconnecting one wire from the pressure switch & checking for contiuity. If you get continuity, the switch is closed when it should be open.
 
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Old 02-18-15, 01:58 PM
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So, if you could just explain what the pressure switch does? Does it turn the gas on and off? And it works off a vacuum created by the inducer ?

I know there is a clogg or problem with the pressure switch would just like to understand what it does.

Thanks for all the help.
 
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Old 02-18-15, 07:19 PM
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With the heater sitting idle, the switch would be open.
When the inducer starts, it probably pulls a slight vacuum on the switch & closes it.
When there is a call for heat & before the inducer comes on, the board checks the status of the switch. If it is closed the board will throw the 3 code & not allow the process to procede.
 
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