12
P/N 1011369 Rev. B 07/17
TROUBLESHOOTING
Problem
Possible Cause
Corrective Action
Control Display flashes “LO” continu-
ously. Buns not toasting properly.
Platen temperature is below 440ºF (226ºC).
Allow the unit to warm up for 30 minutes and then
recheck. If the Control Display still reads “LO”, con-
tact your maintenance person or Authorized Service
Agency for service.
Control Display flashes “LO” continu-
ously. Buns burn.
Failed Platen Thermocouple.
Contact your maintenance person or Authorized
Service Agency for service.
Failed Control Board.
Control Display flashes “PO” continu-
ously.
The power to the unit is below 190 volts.
Turn the power off and then on. If the display still
shows “PO”, check the power cord, plug, and outlet
for damage.
Reset the Circuit Breakers.
Contact your maintenance person, Authorized
Service Agency, or electrician for service.
Failed Control Board.
Failed Transformer.
Control Display flashes “CHEC” con-
tinuously.
Control Compartment ambient temperature is above
140ºF (60ºC).
Verify side vents on toaster are unblocked and not
near other heating appliances. If problem still per-
sists, contact your maintenance person or
Authorized Service Agency for service.
Failed Cooling Fan.
Failed Control Board.
Control Display flashes “HI” continu-
ously. Buns burn.
Failed Platen Solid State Relay.
Contact your maintenance person or Authorized
Service Agency for service.
Failed Control Board.
Failed Platen Thermocouple.
Control Display flashes “ERR 9” con-
tinuously. Buns not toasting properly.
Loose Platen Thermocouple connection on Control
Board or the Platen Thermocouple is open.
Re-secure the Platen Thermocouple connection to
the Control Board. If the Control Display still reads
“ERR 9”, check the Thermocouple for continuity.
Contact your maintenance person or Authorized
Service Agency for service.
Failed Control Board.
Control Display flashes “HI” and
“USE” after 20–30 minutes.
Loose Auxiliary Thermocouple connection on Control
Board or Auxiliary Thermocouple is open.
Re-secure the Auxiliary Thermocouple connection to
the Control Board. If the Control Display still reads
“HI” and “USE”, check Thermocouple for continuity.
Contact your maintenance person or Authorized
Service Agency for service.
Faulty Auxiliary Solid State Relay.
Contact your maintenance person or Authorized
Service Agency for service.
Control Display flashes “StoP”.
Mechanical bind in one or both conveyors.
Enter User Mode to check the motor speed.
Check both conveyors for mechanical binds.
Test the motor.
Replace necessary parts.
Contact your maintenance person or Authorized
Service Agency for service.
Damaged ball bearings.
Conveyor Belt Chain loose or damaged.
Drive chain or sprockets damaged.
Motor has shortened tachometer.
Motor is not receiving voltage.
Control Display flashes “SpEd”.
Mechanical bind in one or both
conveyors.
Enter User Mode to check motor speed.
Check both conveyors for mechanical binds.
Replace necessary parts.
Contact your maintenance person or Authorized
Service Agency for service.
Damaged ball bearings.
Conveyor Belt Chain loose or damaged.
Drive chain or sprockets damaged.
