DEXEN System Troubleshooting

[@coldintake]

Best video out there for a thorough inspection of a electronic fireplace, Well Done

[@wolfsteeltechnical]

Thank you very much!

[@brisingr6118]

Found this very informative and helped me variety a bad valve

[@wolfsteeltechnical]

Thank you, glad the video could help

[@MrMcurtis08]

Best video on the web thank you so so much!

[@wolfsteeltechnical]

Glad it was helpful!

[@WebbedPete]

Here's an additional slightly crazy root cause: the wall switch was semi-defective. It showed ~100 ohm resistance when turned on. Result: intermittent sparking, and when it did light up, would go out soon thereafter. An 85 cent replacement switch does the job. :)

[@MrMcurtis08]

Only thing i see missing is how to properly check the millivolts for the flame sensor. I think im having an issue with the flame sensor or gas valve. Now i know how to check valve im good just wanna know about flame sensor testing

[@wolfsteeltechnical]

Thanks for the feedback @MrMcurtis08. There are special tools used in the lab to test microamps of the flame sensor to determine correct operation. In the field, test the other aspects of the system, such as the flow of gas, correct operation of the valve, and flow of power. If all are operating within the correct values, and the issue still occurs, replace the flame sensor.

[@MrMcurtis08]

Gotcha!!!! Thank you!

[@luislibre9616]

Hi there. Does the flame sensor/pilot assembly need grounding?

[@wolfsteeltechnical]

The system is grounded through a ground wire in the wire harness and yes, the only way for the flame to be rectified is for the flame sensor path through the control module and wire harness to be ground.

[@luislibre9616]

Does this dexen system require more than 1 grounding? Do you need a ground to the valve or 1 ground to the pilot assembly?

[@wolfsteeltechnical]

The system is grounded through a ground wire in the wire harness and yes, the only way for the flame to be rectified is for the flame sensor path through the control module and wire harness to be ground.

[@luislibre9616]

@@wolfsteeltechnical I'm going to try that tomorrow on an unit that I'm having a problem with. It's acting like it's a bad pilot assembly event eventhough it's brand new. I will add another ground to the pilot assembly screw to the ground for the main harness and connect them both to the chassis. I may need to add another ground to the main burner metal flooring for good measure.

[@Canadianman762]

@@luislibre9616 did this work for you?

[@luislibre9616]

Yes it did i added 2 more grounds. And it worked good.

[@luislibre9616]

What is the battery relay used for? Ive seen many systems without it.

[@Bhaiji-2]

I believe it’s for Remote function. My unit doesn’t use it, but I have the wires and battery holder for it.

[@wolfsteeltechnical]

The battery relay allows for the batteries not to be drained while installed in the battery holder. Provides longer battery life.

[@luislibre9616]

@@wolfsteeltechnical thank you for the answer. I really appreciate it.