Alto-Shaam 500-TH - Troubleshooting; Error Codes

TROUBLESHOOTING
Si mple C o ntro l Cook & Ho l d ▪ O p er a to r’s Ma n ual ▪ MN -4 6 709 ▪ Rev 2 ▪ 3/ 2 1
81
TROUBLESHOOTING
Error Codes
Code Description Cause Remedy
ProG Programmer error Fatal error Call Alto-Shaam technical support.
P111 Probe 1 open
circuit, upper
compartment
Open circuit detected on sensor wires. 1. Sensor connection
2. Sensor
3. Control Board
P110 Probe 1 short
circuit, upper
compartment
Short circuit detected on sensor wires. 1. Sensor connection
2. Sensor
3. Control Board
P711 Probe 1 open
circuit, lower
compartment
Open circuit detected on sensor wires 1. Sensor connection
2. Sensor
3. Control Board
P710 Probe 1 short
circuit, lower
compartment
Short circuit detected on sensor wires 1. Sensor connection
2. Sensor
3. Control Board
E-10 Cavity probe
shorted
Short circuit detected on sensor wires.
Halts any active program.
1. Sensor connection
2. Sensor
3. Control Board
E-11 Cavity probe open Open circuit detected on sensor wires.
Halts any active program.
1. Sensor connection
2. Sensor
3. Control Board
E-31 Unit over
temperature
Cavity sensor over temperature too long.
Halts active program if temperature
exceeds 375°F / 190°C.
1. Cooling fan not operating
2. Installation clearance requirements not
met
E-30 Unit under
temperature
Cavity sensor under temperature too
long.
Troubleshoot heating elements
E-79 Over-voltage Supply voltage incorrect Correct the supply voltage
E-78 Under-voltage Supply voltage incorrect Correct the supply voltage
E-109 High limit Cavity high limit open. Stops any active
program.
Any oven experiencing this error should
be investigated by an authorized
Alto-Shaam service provider.
E-b0 PCB shorted PCB board temperature sensor is short-
circuited.
Board failure
E-b1 PCB open PCB board temperature sensor is open-
circuit.
Board failure
E-b2 PCB over
temperature
PCB board temperature sensor over 70°
C.
1. Cooling Fan not operating
2. Installation clearance requirements not
met
E-bC Bootloader
EEPROM RAM reset
Bootloader chip error Requires power cycle to reset