Carrier TRANSICOLD Vector 8500 User Manual

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 Section 8.9.4
Heater contactors or coil defective Replace
Defective wiring / connectors Replace
Loose terminal connections Tighten
Low voltage Section 9.3
No or restricted air flow Section 9.4.10
Temperature sensor malfunction Section 8.9.15
9.4.6 Unit Will Not Terminate Heating
Unit fails to stop heating
Microprocessor temperature improperly set Reset
Microprocessor malfunction Section 8.9
Temperature sensor malfunction Section 8.9.15
9.4.7 Defrost Cycle Malfunction
Will not initiate defrost automati-
cally
Defrost timer has not expired Check/Reset
Defrost air switch (DAS) malfunction Section 8.8.11
DTT is above 40°F (4.4°C) Cool Down
Loose terminal connections (DAS) Tighten
Will not initiate defrost manually
Keypad defective Section 8.4.5
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 Section 8.9.4
Evaporator fan contactor stuck closed Check
Frequent defrost
Defrost air switch (DAS) out of adjustment Section 8.8.11
Wet load Normal
Does not terminate or cycles on
defrost
Defrost air switch (DAS) out of adjustment Section 8.8.11
DTT malfunction Section 8.9.15
Refrigerated Compartment
Hot Load Allow time to pull
down
Defective or insufficient refrigerated compartment insula-
tion or air leak
Correct

Carrier TRANSICOLD Vector 8500 Specifications

General

Brand	Carrier TRANSICOLD
Model	Vector 8500
Category	Automobile Accessories
Language	English