If there is a flame, check the following:
1. Is the scanner tube clogged? Remove scanner, and clean scanner tube.
2. Is the scanner good? Replace scanner. Make sure it is the correct scanner. Sometimes the customer
installs a Honeywell scanner in place of a Fireye scanner.
3. Is the EUV1 Amplifier card good? Replace EUV1 amplifier card. (Could be infrared).