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Model 290
Problem Cause Correction
HEATING OF SHORTENING SECTION (Continued)
Heating of shortening • Low or improper voltage • Use a meter and check the
too slow receptacle against data plate
• Weak or burnt out element(s) • Check heating element(s) per
Heating Elements Section
• Points in contactor bad • Check contactor per Heating
Contactors Section
• Wire(s) loose • Tighten
• Burnt or charred wire • Replace wire and clean
connection connectors
Shortening • Programming wrong • Check temperature setting
overheating in the program mode
• Faulty PC board • Remove and replace control
panel
• Faulty temperature probe • Remove and replace temperature
probe
• Check contactor for not • Check faulty contactor per
opening Heating Contactors Section
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