62-11640
9–6
Indication/Trouble
Possible Causes
Action / Reference
9.4.5
Unit Will Not Heat Or Has Insufficient Heating
Unit will not heat or has insuffi-
cient heat
Heater(s) defective
Heater contactors or coil defective
Replace
Defective wiring / connectors
Replace
Loose terminal connections
Tighten
Low voltage
No or restricted air flow
Temperature sensor malfunction
9.4.6
Unit Will Not Terminate Heating
Unit fails to stop heating
Microprocessor temperature improperly set
Reset
Microprocessor malfunction
Temperature sensor malfunction
9.4.7
Defrost Cycle Malfunction
Will not initiate defrost automati-
cally
Defrost timer has not expired
Check/Reset
Defrost air switch (DAS) malfunction
DTT is above 40°F (4.4°C)
Cool Down
Loose terminal connections (DAS)
Tighten
Will not initiate defrost manually
Keypad defective
Loose terminal connections between keypad and micro-
processor
Tighten
DTT is above 40°F (4.4°C)
Cool Down
Unit has been running less than 15 seconds
Try again
Initiates but does not defrost
Heater contactor or coil defective
Replace
Heater(s) burned out
Evaporator fan contactor stuck closed
Check
Frequent defrost
Defrost air switch (DAS) out of adjustment
Wet load
Normal
Does not terminate or cycles on
defrost
Defrost air switch (DAS) out of adjustment
DTT malfunction
Refrigerated Compartment
Hot Load
Allow time to pull
down
Defective or insufficient refrigerated compartment insula-
tion or air leak
Correct
Summary of Contents for Vector 8500
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Page 125: ...62 11640 SECTION 6 MESSAGECENTER PARAGRAPH NUMBER Page 6 1 MESSAGECENTER MESSAGES 6 1 ...
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