MUFFIN TOASTER MT-12
15
P/N 1010610 Rev. Q 07/16
McDonald’s
TROUBLESHOOTING (continued)
Problem
Possible Cause
Corrective Action
Toaster not heating (but fan is
working).
Hi-Limit control is tripped or
defective.
Turn toaster off for 30 minutes and then
reset. If the Hi-Limit control trips repeat-
edly, contact your maintenance person or
Authorized Service Agency.
Loose/defective electronic
connections.
Contact your maintenance person or
Authorized Service Agency.
Heating element/coil is broken/open.
Solid State Heater Relay is
defective.
Control Board is defective.
Fan not running but toaster is
heating.
Fan is dirty or defective.
Clean or replace defective fan.
No Audio Signal, but Ready
Light works.
Defective Audio Signal.
If Audio Diagnostic LED is on but there
is no Audio Signal, replace the Audio
Signal.
No Ready Light but Audio
Signal works.
Defective Ready Light.
If Ready Light Diagnostic LED is on, but
the Ready Light is not, replace the Ready
Light.
No Audio Signal or Ready light
on either Full or Partial Load
cycles.
Control Board is defective.
Replace the Control Board.
Front Door will not open or
close properly.
Door Push Rod is damaged.
Remove left cover and check Door Push
rod for free movement of door. Straighten
or replace rod as required.
Have your maintenance person or
Authorized Service Agency straighten or
replace the Door Push Rod as required.
Heating element/coil is on
continuously.
Defective Solid State Relay.
Contact your maintenance person or your
Authorized Service Agency.
Defective Control board.
Only half the element coil is
working.
Loose/defective electrical wiring con-
nection.
Check wiring connections at element/coil
Heating element/coil is broken/open
Replace the heating element/coil.