COS-DFR304 FAQ

Q: Why does it smell like paint or chemicals when I use my oven for the first time?

A: This is the result of residue from the manufacturing process burning off. Open all of the windows and doors in the room for proper ventilation and allow the oven to run with nothing inside for at least 45 minutes before the first use.

Q: How can I tell when my oven has been preheated to the selected temperature?

A: Your Cosmo dual fuel range is equipped with an indicator light above both the oven function and oven temperature knobs. The light will illuminate while the oven is preheating and will turn off once the oven has reached temperature. It will switch on and off throughout the cooking cycle as the internal heating elements cycle on and off to maintain the set temperature. 

Q: I don’t feel any heat coming from the convection fans when in convection mode.

A: Your oven is equipped with two convection fans in the rear of the oven that circulate the heat produced by the top or bottom elements only. They do not have dedicated, circular heating elements. 

Q: Does my range come with a manufacturer’s warranty?

A: This range includes a 1-year manufacturer’s warranty with your new purchase from an authorized retailer. To view a list of authorized retailers, please visit www.cosmoappliances.com/locations. 

Q: Where can I find the warranty terms for this product?

A: The warranty terms are available online at www.cosmoappliances.com/warranty. Your unit is covered for both parts and labor for 1 year from the date of purchase. 

Q: All of my burners are clicking or sparking when I turn any of them on.

A: The burners on this unit will spark when you attempt to ignite any of them. This is normal operation and is an intentional side effect of the cooktop’s design.

Q: Why is hot air blowing out from the top of my oven door?

A: Your oven is equipped with a cooling fan to better regulate the internal temperature for more precise cooking. There are two vent locations: on top of the oven door, and behind the cooktop. This is intended by design and is normal operation.

Q: Why is my unit producing black soot when in use?

A: The most common cause of black soot being produced when using either the oven or the cooktop is an improper propane mixture or conversion. Check the propane gas source first, then review the LP conversion instructions. 

Q: Why does my oven’s fan continue to run with convection mode off or after the oven has been turned off?

A: This is normal operation. The cooling fan will remain on during the baking cycle, regardless of the convection function, as well as after the oven has been shut off until it has sufficiently cooled.