Henny Penny HHC-990 Operator's Manual page 25

5-2. ERROR CODES AND
WARNINGS (Continued)
Display
"
E-6B AIR TEMP SENSOR
FAILED SHORTED"
"E-12A WATER HEATER
SENSOR FAILED
OPEN"
"E-12B WATER HEATER
SENSOR FAILED
CLOSED"
"E-17 HUMIDITY SENSOR
FAILED"
"E-18 NO WATER, FLOAT
SWITCH FAILED"
A humidity error only shuts down the humidity system. 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
Cause
• Faulty air temperature
probe
• Faulty water
heater probe
• Faulty water
heater probe
• Faulty humidity sensor
• Float switch stuck or
faulty; faulty relay
(stuck on);water pan
needs cleaned;
loose or faulty water
heater sensor; acorn nuts
on water heater cover
loose, or water heater
insulation missing or
damaged
Panel Board Correction
• 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 PC board
replaced
• Turn switch to OFF position, then back to
ON; if the display shows "E-12A", the
water heater should be checked and
repaired or replaced (the water heater
probe is built into the water heater); the
controls should return to normal; if
"E-12A" persists, have PC board replaced
• Turn switch to OFF position, then back to
ON; if the display shows "E-12B", the
water heater should be checked and
repaired or replaced (the water heater
probe is built into the water heater); the
controls should return to normal; if
"E-12B" persists, have PC board replaced
• Turn switch to OFF position, then back to
ON; if the display shows "E-17", the
humidity sensor should be checked;
once the humidity sensor is repaired, or
replaced, the controls should return to
normal; if "E-17" persists, have PC board
replaced
• Turn switch to OFF position, then back to
ON; if the display shows "E-18", check
and clean float switch; clean water pan;
have relay and water heater sensor
checked and replace if necessary; tighten
acorn nuts on water heater cover; make
sure 2 complete pieces of insulation are
under the water heater cover; if "E-18"
persists, have PC board replaced
Model HHC-990
804