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Section V – Troubleshooting Guide
Service Technician Reference
Issue
Possible Cause
Possible Solution
Unit Powers On But Does
Not Heat
Thermal Overload Protection
Activated
Owner/Operator Call for Service� Technician: The thermostats for hi-limit protection are automatic
reset type and are located in the plenum, accessible by removing the heater access panel� If they are
not closing to allow power to pass, replace the Hi-limit thermostat�
Faulty heater controller or sensor Owner/Operator Call for Service� Technician: Open the back cover and verify there is voltage present
at the heater connections� If there is no voltage when the controller is loaded, replace the controller� If
the controller displays three zero’s or three lines, check the sensor wiring, replace if needed�
Faulty Heating Elements
Owner/Operator Call for Service� Technician: For each silo, after verifying voltage is present at the
heater and the hi-limit is operating properly, replace the heater element�
Unit Powers On But Does
Not Display Temperature�
Temperature Controller or sensor
faulty
Owner/Operator Call for Service� Technician: Inspect all function of the controller, replace Temperature
Controller if needed� If the controller displays three zero’s or three lines, check the sensor wiring,
replace if needed�
Faulty Controller Relay
Owner/Operator Call for Service� Technician: Check controller and replace if necessary�
Unit Powers On and Heats
Up But Never Reaches
The Set-point Operating
Temperature
Faulty Heating Elements
Owner/Operator Call for Service� Technician: Ensure both elements are securely connected and
operating properly� Replace heater element if necessary�
Faulty controller or sensor
Owner/Operator Call for Service� Technician: Inspect all function of the controller, replace Temperature
Controller if needed� If the controller displays three zero’s or three lines, check the sensor wiring,
replace if needed�
Unit Overheats
Faulty Exhaust Fan
Owner/Operator Call for Service� Technician: Open back cover� Ensure that fan wiring is properly and
securely connected� If wiring is properly and securely connected, replace the fan�
Unit Plugged In, Power
Confirmed, Turn Unit On
and Nothing
Wiring Not Connected
Owner/Operator Call for Service� Technician: Open back cover� Ensure that all wiring
is properly and securely connected�
Faulty Controller
Section VI – Replacement Parts
Please visit www�cambro�com for a complete list of replacement parts or contact your local Cambro Representative or Distributor�
Owner/Operator Reference
Issue
Possible Cause
Possible Solution
Self Levelling Dispenser
for Plates Does Not Glide
Smoothly
Worn Out, Over Extended or
Unattached Springs
Inspect all springs for wear, over-extension or detachment� Replace worn springs as necessary or
reattach existing springs that have come loose�
Debris on Dispenser guides
Clear guides of debris per maintenance/cleaning instructions in manual�
Debris on Dispenser Uprights
Clean uprights thoroughly per maintenance/cleaning instructions in manual�
Unit Does Not Roll Smoothly Debris on Casters
Clean casters thoroughly� Refer to caster maintenance section in manual�
Lack of Lubrication on Caster
Axles and Bearings
Clean axles and bearings and lubricate with WD-40 or similar spray lubricant� Refer to caster
maintenance section in manual�
Unit Operates But Plates
Are Too Hot
Faulty Heating System or wrong
set points
Check to make sure unit is a set at a max of 175˚F (79�4˚C)� If the unit continues to heat higher than
175˚F (79�4˚C), CALL FOR SERVICE�
Unit Operates But Plates
Are Not Hot Enough
Using too high of a set point to
Heat Plates or Faulty Heating
System
Check to make sure unit is a set to at least 140˚F (60˚C)� If the unit continues to not get hotter than
140˚F (60˚C), CALL FOR SERVICE�
TROUBLESHOOTING GUIDE
NOTE: Electrical Adjustments or Electric Part Replacements Under Warranty Must Be
Carried Out by An Authorized Cambro Service Technician. For Service in the USA or
CANADA Call 1-800-833-3003 ext. 4118.
