Carrier TRANSICOLD PrimeLINE 69NT40-571-001, Руководство по эксплуатации и обслуживанию, Страница: 114 / 186

T-372 6–4
6.9 Microprocessor Malfunction
Will not control
Incorrect software and/or controller configuration Check
Defective sensor
Section 7.28
Defective wiring Check
Low refrigerant charge
Section 7.3
6.10 No Evaporator Air Flow or Restricted Air Flow
Evaporator coil blocked
Frost on coil
Section 6.6
Dirty coil Section 7.15
No or partial evaporator air
flow
Evaporator fan motor internal protector open
Section 7.17
Evaporator fan motor(s) defective Section 7.17
Evaporator fan(s) loose or defective
Section 7.17
Evaporator fan contactor defective Replace
6.11 Electronic Expansion Valve Malfunction
Low suction pressure
Incorrect software and/or controller configuration Check
Failed suction pressure transducer (SPT) or evapora
-
tor pressure transducer (EPT)
Replace
Suction service valve partially closed Open
Filter drier partially plugged
Section 7.14
Low refrigerant charge Section 7.3
No evaporator air flow or restricted air flow
Section 7.15
Excessive frost on evaporator coil Section 6.6
Evaporator fan(s) rotating backwards
Section 7.17.3
EEV control malfunction Section 7.19
Failed digital unloader valve (DUV) Replace
Loose or insufficiently clamped sensor Replace
High suction pressure with
low superheat
Foreign material in valve
Section 7.19
Failed suction pressure transducer (SPT) or evapora
-
tor pressure transducer (EPT)
Replace
EEV control malfunction Replace
Improperly seated powerhead Ensure powerhead is
locked and in place
Liquid slugging in
compressor
Failed suction pressure transducer (SPT) or evapora
-
tor pressure transducer (EPT)
Replace
Failed EEV Replace
6.12 Autotransformer Malfunction
Unit will not start
Circuit breaker (CB-1 or CB-2) tripped Check
Autotransformer defective
Section 7.26
Power source not turned ON Check
460 VAC power plug is not inserted into the receptacle
Section 5.2.1
Condition Possible Cause Remedy / Reference
Section