
If a humidity error occurs, and you want to use the cabinet without humidity, turn the humidity off by following the directions for SP-4, Humidity Setpoint, in Special Programming Section of this manual. Once the setpoint is off, the alarm stops, but the error code shows in display. (Includes “E-12A”, “E-12B”, “E-17” and “E-18”). 4-8 804 Model HHC-990 5-2. ERROR CODES AND WARNINGS (Continued) Display Cause Panel Board Correction “E-41 SYSTEM DATALOST” • Memory scrambled • Turn switch to OFF posi