50
Unit not heating
Evaporator fan motor not
operating
Check parameters
Abnormal pressure
In-cab controller not working
Hot gas solenoid malfunction No power to valve
Improper wiring or loose
connections
Valve improperly assembled
Movement of plunger restricted
due to corroded or worn parts,
foreign material lodged in valve,
bent or dented enclosing tube
Compressor drive (clutch
defective)
Compressor defective
Low discharge pressure
Broken valve plate in
compressor
Expansion valve partially
closed by ice or dirt
Hot gas solenoid malfunction
High discharge pressure
Refrigerant overcharge
Remove excess charge
Air in the system
Evacuate and recharge system
Dirty Condenser
Clean condenser
Restricted condenser
Clean condenser
Condenser fan not running
Check fan motor
No discharge pressure
No refrigerant
Broken compressor belt
High suction pressure
Broken valve plate in
compressor
Expansion valve bulb
improperly mounted
Expansion valve bulb making
poor contact
Expansion valve open too
much (too low superheat)
Expansion valve capillary
eroded or leaking
Compressor pressure
regulating valve misadjusted
Liquid refrigerant entering
the compressor
Gauge out of calibration
Содержание Zer0 120
Страница 1: ...Zer0 120 0WSMZ120 Workshop Manual ...
Страница 15: ...8 Figure 1 Z120 Condensing Section Components ...