No error code. When unit reaches set temp, cuts off & temp set & room lights flash. When room cools to set temp or below, unit refires OK and heats up to set temp but temp set & temp room continue to flash all the while. For this reason, I cannot program the unit. I have rebuilt older Monitor units in the past but would like to find a service/repair manual for this model before attempting a tear down. All responses welcome and thank you.

I have a monitor 2400 heater we have replaced the fuel filter and checked all the lines and have fuel going to the heater but it will not light when I turn it on it gives me an E08 error can someone tell me what to do