error C633

The C633 error code indicated a lower than expected pressure reading during the heat-up phase of the sterilization cycle.  The suggested areas to look at are (in order of significance):

1) a pressure leak - Door Gasket, Vent Valve or Air Valve (Mounted at the top of the chamber near the resevour)

2) Water Level Sensor (mounted in the rear of the chamber) - if you do not have sufficient water in the Chamber you can "run out of steam" before the end of the cycle

3) Heater Element - the software wants to see steam after a specific time - if you have no heat, you get no steam

4) Main PC Board - always a possibility

If there is anything else I can do to help you troubleshoot this problem feel free to call me at RPI (800-21-9723 Ext. 127) 8:30 to 4:00 PST