90
YORK INTERNATIONAL
PROBLEM
CAUSE
SOLUTION
Compressor wont
1. Suction pressure > programmed
1. Excessive load. Check OPERATING
load
unload point or operating limitations
LIMITATIONS. Check programmed
(Solenoid valve
have been exceeded.
unloading point.
de-energizes to load
2. Discharge pressure > programmed
2. Check OPERATING LIMITATIONS.
compressor
load point or operating limitations
Check programmed unloading point.
have been exceeded.
3. Demand not great enough.
3. OK. Become familiar with control
operating
4. Defective loading solenoid.
4. Replace compressor loading solenoid.
5. Faulty wiring to loading solenoid.
5. Check wiring.
6. Defective water temperature sensor.
6. Compare sensor with a thermometer.
Variation of sensor vs. thermometer of
+2°F is not unusual. Replace if necessary.
7. Defective evaporator or optional
7. Replace transducer after verifying with a
discharge transducer.
gauge.
Lack of Cooling
1. Fouled evaporator surface.
1. Contact the local YORK service
Effect
representative.
2. Faulty compressor suction and/or
2. Contact the local YORK service
discharge valves.
representative.
Summary of Contents for YCAJ44HE8
Page 16: ...16 YORK INTERNATIONAL WIRING DIAGRAMS LD02165 FIG 5 ELEMENTARY DIAGRAM...
Page 17: ...FORM 150 60 NM3 17 YORK INTERNATIONAL FIG 5 ELEMENTARY DIAGRAM Cont d LD02166...
Page 20: ...20 YORK INTERNATIONAL CONNECTION DIAGRAM ELECTRICAL BOX FIG 7 CONNECTION DIAGRAM LD02171...
Page 21: ...FORM 150 60 NM3 21 YORK INTERNATIONAL FIG 7 CONNECTION DIAGRAM Cont d LD02172...