Alto-Shaam AS-250 - Manual (Page 15)

#812 • INSTALLATION / OPERATION / SERVICE MANUAL • 13
S E R V I C E
This section is provided for the assistance of qualified technicians only and
is not intended for use by untrained or unauthorized service personnel.
Do not replace any electrical components without first disconnecting electrical
power to the unit by switching off the electrical power at the rear of the oven.
A warning sign should be posted on the panel indicating the oven is being
serviced and that the power must remain off.
T R O U B L E S H O O T I N G
Error Possible Cause
Code Description/Results Service Required
E-10 Air Sensor Fault (shorted)
Inoperative Oven
Air sensor defective? See following page for air sensor test.
E-11 Air Sensor Fault (open)
Inoperative Oven
E-20 Product Probe Fault (shorted)
Oven will cook in time only
Probe defective? See following page for probe sensor test.
E-21 Product Probe Fault (open)
Oven will cook in time only
E-30 Under temperature Oven door closed? Door gasket need replacement? Preheat skipped?
Oven will shut down Oven overloaded or has frozen product? Defective air sensor or probe?
Defective solid state relay? Bad wire connections or open heating
cable? Is the high limit switch tripped? If none of the above,
call service.
E-31 Over temperature Shorted cable? Defective solid state relay? Defective air sensor?
Oven will shut down If none of the above, call service.
E-70 Configuration connector error Check control connections for loose wires. If none, control
I noperative Oven must be replaced.
E-78 Voltage low If 125 VAC unit, incoming voltage is below 90 VAC. Correct.
I noperative Oven If 208-240 VAC unit, incoming voltage is below 190 VAC. Correct.
E-79 Voltage high If 125 VAC unit, incoming voltage is over 130 VAC. Correct.
I noperative Oven If 208-240 VAC unit, incoming voltage is over 250 VAC. Correct.
E-80 EEPROM - Function data error Replace control.
I noperative Oven
E-82 EEPROM - Calibration data error Replace control.
I noperative Oven
E-84 EEPROM - Unit ID error Replace control.
I noperative Oven
E-86 EEPROM - Preset data error Replace control.
I noperative Oven