York RecipPak YEAZ88DR6 - Troubleshooting Chart - Load and Cooling Effect; Compressor wont load (Solenoid valve de-energizes to load compressor); Lack of Cooling Effect

90 YORK INTERNATIONAL
PROBLEM CAUSE SOLUTION
Compressor wont 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
operation.
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.