Alto-Shaam Halo Heat 1000-BQ2/128 - Manual (Page 16)

1000-BQ2 SERIES OPERATION & CARE MANUAL • 14
D A N G E R
DISCONNECT UNIT FROM
POWER SOURCE BEFORE
CLEANING OR SERVICING.
C A U T I O N
THIS SECTION IS PROVIDED FOR THE ASSISTANCE
OF QUALIFIED SERVICE TECHNICIANS ONLY AND
IS NOT INTENDED FOR USE BY UNTRAINED OR
UNAUTHORIZED SERVICE PERSONNEL.
S E R V I C E
T R O U B L E S H O O T I N G - M A N U A L C O N T R O L
Error
Code
Description/Results
Possible Cause
Service Required
E-10 Air Sensor Fault (shorted)
Inoperative Unit
Air sensor is shorted.
Air sensor defective?
Test air sensor by placing sensor in ice water bath 32°F (0°C) and using an
ohmmeter set on the ohm scale. The reading should be 100 ohms resistance. If it
is more than 2 ohms higher or lower, sensor needs to be replaced. If Ohm reading
is 100, replace display. If Ohm reading is not 100, replace sensor.
E-11 Air Sensor Fault (open)
Inoperative Unit
Air sensor is open or connection failure.
Air sensor defective? See above for air sensor test.
E-30 Under temperature
Oven will not reach set temperature
Unit door closed? Door gasket need replacement? Preheat skipped?
Unit overloaded or holding frozen product? Defective air sensor or probe?
Defective solid state relay? Bad wire connections or open heating cable?
If none of the above, contact Alto-Shaam Service Department.
E-31 Over temperature
Unit will shut down
Unit has exceeded its maximum allowable set temperature by 25 degrees for at
least 3 minutes. Unit will shut down.
Defective sensor or poor sensor connection?
Defective relay?
Shorted heater element?
If none of the above, contact Alto-Shaam Service Department.
E-70 Configuration error
Inoperative Unit
Contact Alto-Shaam Service Department for correct DIP-switch settings.
E-82
or
E-83 EEPROM Error - Bad Checksum
Inoperative Unit
Contact Alto-Shaam Service Department for help resetting the control.
E-90 Button shorted
Inoperative Control
Stuck button on control panel. Check buttons.
If control is still inoperative, contact Alto-Shaam Service Department.
E-91 Input failure
Contact Alto-Shaam Service Department.
-AC- Power Failure Press any key to acknowledge.