The fuel supply may be empty. If a replacement fuel cartridge is needed, please turn the unit off and replace the fuel cartridge as shown in the product's instructions.
If replacing the fuel cartridge is not required, please turn the on/off switch to the on position and let the gas flow for 2 minutes before hitting the start button. This will purge the appliance and often corrects the problem.
If the product still does not function correctly after trying the above steps, please contact customer service so we can work with you on a repair, replacement, or refund (receipt required for refund).