I have a problem with a Baxter OV300E Oven. The Automatic Ignition System keeps Flashing 1-flash Air flow problem, can you help me with this. Thank you.

Yes, that is correct. The Baxter OV300E is a countertop oven model. It typically features an opening directly into the heating chamber, which is covered by insulation and a panel. The purpose of the insulation and the panel is to maintain proper temperature control and safety during operation.
The insulation helps to retain heat within the oven chamber, allowing for efficient cooking or baking. It also serves to prevent excessive heat from escaping, which could lead to potential hazards or energy inefficiency.
The panel covering the opening provides a barrier between the heating chamber and the surrounding environment. This panel helps to protect users from coming into direct contact with the hot surfaces inside the oven.
It's important to follow the manufacturer's instructions and safety guidelines when using the Baxter OV300E or any other cooking appliance to ensure safe and optimal operation.

I need to program timer

You can remove the oven doors, hinges, control panel door, and top oven trim, if needed. That will definitely reduce the width enough to squeeze it in.

Your temperatures will begin flashing after the oven attempted to heat for 10 minutes without successfully increasing in temperature. Sound like you are having burner issues and should call a licensed burner technician to have it serviced.

Check to see if your draft inducer (exhaust fan) is running, if it is then you could have a dirty/bad air switch, the component with the small black hose running to it and the two wires on the face. To check an air switch using a multi-meter set it to 40 VAC and place a lead on each terminal, if you are getting a voltage reading over 1 volt, replace the air switch, if you have zero volts, the air switch is closed and working. Aside from a bad exhaust motor or air switch there could be many things causing that error.

With the oven on hold the time up or down arrows until the time begins to change.

If your bagels are turning into hockey pucks then most likely the steam isn't functioning on your oven. Make sure the water is turned on to the oven. If you still are getting no steam call an authorized service provider.

When you say the oven doesn't want to turn on are you referring to the control board wont turn on? Or are you saying that the oven wont heat when it gets too hot?