Having problems with your Air Conditioners ?

I have a ruud furnace/airconditioner Model:UGPN-07EAMER, Serial: FU5D302F390401344. When the thermostat calls for heat, a little motor (within the furnace itself) or something kicks on, the burners ignite a few seconds later, then the blower starts. It's at this time the flame goes out and the blower is just sending cold air throughout the house. There are two green lights (power and ok) lit normally and the orange(ish) blinking "flame" light on the main board. When the flame goes out, the


Answers :

Hi, this motor is the inducer motor, which is the first thing to start on a call for heat. Everything seems to be going through its sequence of operation just fine, but then shutting down on a safety. Look on the panel for a chart that should tell you by the number of flashes and color of the leds what is wrong. It is locking out for some reason, could be several of many. Next to the pilot, you will have a flame sensor. The metal tip sets in the pilot flame. When they get dirty, they will cause the furnace to do just as you say, run and then lock out. You can take a piece of sanding cloth and sand the metal tip on this flame sensor. If this is the problem, it will start and stay running. Also, look for this chart I have told you about, as it is there to help you locate which safety is giving you the problem. My bet is the flame sensor. Please keep me posted, and rate me on my help to you. The flame sensor also has a electrical lead that is attached to it going to the board, so you will see it.
Sincerely,
Shastalaker7
A/C, & Heating Contractor

Repair Help & Product Troubleshooting for Air Conditioners
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