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Press and “SP-7, OUT OF WATER TRIP POINT” and the preset trip point temperature shows in display. If the float switch fails, the trip point temperature is the water pan temperature at which the control senses the water pan is out of water. We recommend a trip point temperature of 450o F (232o C). 17. Press to change the out-of-water trip point. SP-8 Clean Water Pan Setpoint 18. Press and “SP-8, CLEAN WATER PAN SETPOINT,” and the preset temperature, at which the controls senses that the water pan needs cleaned of lime, shows in the display. We recommend a setpoint temperature of 425o F (218o C). 19. Press to change the setpoint. 4-4 303 Model HHC-990 21. Press and hold until the display counts down from 3, and the display flashes “-INIT-,” then “INIT*DONE”. This completes the initialization, and sets the control to factory settings. 4-3. SPECIAL PROGRAMMING (Continued) SP-9 System Initialization 20. Press and “SP-9, DO SYSTEM INIT” shows in display. (Factory Settings) SP-10 Audio Volume 22. Press and “SP-10, AUDIO VOLUME,” and the volume setting (1 to 10) shows in display. Press to test volume. 23. Press to change the volume. SP-11 Audio Tone 24. Press and “SP-11, AUDIO TONE -(Hz)-” and the tone setting (50 to 2000) shows in display. 25. Press to change the tone setting. SP-12 Audio Effects 26. Press and “SP-12, AUDIO EFFECT” and the effect setting (0 to 3) shows in display. 27. Press to change the pattern of the tone. SP-13 Language Options 28. Press and “SP-13, LANGUAGE,” and the preset language shows in the display. 29. Press to change to English, French, German, Spanish, or Portuguese. 30. Press and hold the button anytime during programming to exit the Special Programming Mode. For more information on the other settings of Special Programming, call your local Henny Penny distributor in your area, or call Henny Penny Corp. at 1-800-417-8405 or 1-937-456-8405. 303 4-5 Model HHC-990 SECTION 5. TROUBLESHOOTING SECTION 5. TROUBLESHOOTING 5-1. TROUBLESHOOTING GUIDE PROBLEM CAUSE CORRECTION Product not holding temperature • Doors left open • Product held too long • Control temperature set too low • Door gasket torn or worn • Keep doors closed except to load and serve product • Hold product only for recommended times • Increase air temperature (SP-3) in Special Program Mode • Replace bad door gaskets Cabinet steaming product soggy • Humidity setpoint too high • Decrease humidity setpoint (SP-4) in Special Program Mode Product dry • Humidity setpoint too low • No water in pan • Increase humidity setpoint (SP-4) in Special Program Mode • Pour water in water pan Unit not heating • Blown fuse • Change15 amp fuse Unit not reaching set temperature • Doors left open • Door gasket torn or worn • Keep doors closed except to load and serve product • Replace bad door gaskets More detailed troubleshooting information is available in the Technical Manual, available at or 1-800-417-8405 or 1-937-456-8405. 5-1 703 Model HHC-990 5-2. ERROR CODES AND The display shows the following error codes and warnings when a WARNINGS fault is detected, along with an alarm sound. Both the heat and humidity systems shut down, except when specified otherwise. Display Cause Panel Board Correction “E-4 CPU TOO HOT” • Control board too hot; unit overheating or louvers clogged • Turn switch to OFF position, then back to ON; if display still shows “E-4”, the PC board is getting too hot; clean louvers and check cooling fan; if cooling fan is not working, have it replaced; once panel cools down, the controls should return to normal; if “E-4” persists, have the PC board replaced “E-5 AIR TEMP TOO HOT” • Faulty relay, PC board, or air probe • Turn switch to OFF position, then back to ON; if display shows “E-5”, the heating circuits and temperature probe should be checked; once the unit cools down, the controls should return to normal; if “E-5” persists, have the PC board replaced “E-54A CPU TEMP SENSOR OPEN” • Faulty PC board • Turn switch to OFF position, then back to ON; if display shows “E-54A”, the control should be re-initialized (see Programming Section); if the error code persists, have PC board replaced “E-54B CPU TEMP SENSOR SHORTED” • Faulty PC board • Turn switch to OFF position, then back to ON; if display shows “E-54B”, the control should be re-initialized (see Programming Section); if the error code persists, have PC board replaced “E-6A AIR TEMP SENSOR FAILED OPEN” • Faulty air probe • Turn switch to OFF position, then back to ON; if the display shows “E-6”, the temperature probe should be checked; once the temperature probe is repaired, or replaced, the controls should return to normal; if “E-6” persists, have the PC board replaced 303 4-7 Model HHC-990 5-2. ERROR CODES AND WARNINGS (Continued) Display Cause Panel Board Correction “E-6B AIR TEMP SENSOR FAILED SHORTED” • Faulty air temperature probe • Turn switch to OFF position, then back to ON; if the display shows “E-6”, the temperature probe should be checked; on...

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