Rheem RAMP-JEZ Installation Instructions - Page 20

TROUBLE SHOOTING In diagnosing common faults in the air conditioning system, it is useful to present the logical pattern of thought that is used by experienced technicians. The charts which follow are not intended to be an answer to all problems, but only to guide your thinking as you attempt to decide on your course of action. Through a series of yes and no answers, you will follow the logical path to a likely conclusion. Use these charts as you would a road map, if you are a beginning technician. As you gain experience, you will learn where to establish the shortcuts. Remember that the chart will help clarify the logical path to the problem. ELECTRICAL CHECKS FLOW CHART Unit Running? NO Thermostat Problem? YES NO Repair and Recheck Transformer Problem? YES Repair and Recheck YES Run Capacitor NO Voltage on Compressor Side of Contactor? Start Capacitor Potential Relay Compressor Internal Overload Open Compressor Winding Open Unit Wiring and Connections NO Circuit Breakers or Fuses Open YES Compressor Winding Grounded Condenser Fan Grounded Grounded Capacitor Replace Fuses or Reset Breakers and Recheck YES Go to Mechanical Checks NO Voltage on Line Side of Contactor? YES Compressor Contactor Hi Pressure Control Lo Pressure Control Compressor Time-Delay Unit Wiring and Connections 20