Xerox 5009RE h Error Code

[Mr Spock]

fuser temp code
If memory serves correctly
reset with 14 start
enter diag with clear exposure clear exposure

[dispatcher]

I have a Xerox 5009RE which is showing a H error code. I have not seen one of these in a while and have no manual. I seem to remember this is an overheating problem but not sure. Any help??