2003
Room Air Conditioners
Introduction
Table of Contents
Typical Unit Components
8th Digit - Engineering
S S 08 J 1 0 R
2nd Digit
3rd and 4th Digit - Approximate BTU/HR Cooling
Page
EQ PERFORMANCE DATA
RS-RMPERFORMANCE DATA
PERFORMANCE
SS PERFORMANCE DATA
WS PERFORMANCE DATA
YM18J34A-A
PERFORMANCE DATA
YS09J10B-A
YS12J33-A
9700
Evaporator Air Temperature Rise
BTUH
@70F Inside 62F Outside
Refrigeration System Sequence of Operation
Wire Size
Electrical Rating Tables
Electric shock hazard
Installation Notes
WINDING TEST
COMPONENTS OPERATION & TESTING
COMPRESSORS
THERMAL OVERLOAD External
FAN MOTOR
TERMINAL OVERLOAD - TEST
TERMINAL OVERLOAD Internal
CHECKING THE INTERNAL OVERLOAD
1.Off Position - no continuity between terminals
SYSTEM CONTROL PANEL EQ Model Only See Figure
SYSTEM CONTROL PANEL KQ Models Only- See Figure
SYSTEM CONTROL PANEL YQ Model Only
SYSTEM CONTROL PANEL
SYSTEM CONTROL SWITCH WE & WY Models See Figure
SYSTEM CONTROL SWITCH - TEST
SYSTEM CONTROL PANEL See Figure
Heat Pump & Electric Heat Models
SYSTEM CONTROL SWITCH - TEST
SYSTEM CONTROL SWITCH See Figure
SYSTEM CONTROL SWITCH
TO SET MODE OF OPERATION
TO ADJUST TEMPERATURE
TO ADJUST FAN SPEED
Smart Center Electronic Control Center
ERROR CODE LISTINGS
TO SET THE TIMER
TESTING THE ELECTRONIC CONTROL
TESTING THE ELECTRONIC CONTROL
THERMOSTAT YQ Model Only See Figure
TEST
THERMOSTAT SQ & KQ Models - See Figure
TEST
THERMOSTAT BULB LOCATION
THERMOSTAT ADJUSTMENT
TEST
DEFROST THERMOSTAT Heat Pump Models Only
CAPACITOR, RUN See Figure
DEFROST BULB LOCATION Heat Pump Models Only
Retainer
RESISTOR Heat Anticipator See Figure
HEAT PUMPS REVERSING VALVE See Figure
CHECK VALVE OPERATION
TO TEST
TESTING REVERSING VALVE
SOLENOID COIL Heat Pump Models Only See Figure
SEALED REFRIGERATION SYSTEM REPAIRS
NOTE Always replace with the exact replacement
VALVE, DRAIN PAN See Figure
HEATING ELEMENT See Figure
TROUBLESHOOTING AND SERVICE
REFRIGERANT CHARGING
HERMETIC COMPONENT REPLACEMENT
SPECIAL PROCEDURE IN THE CASE OF
METHOD OF CHARGING
Undercharged Refrigerant Systems
NOTE Heat pump refrigeration drawing
Overcharged Refrigerant Systems
Restricted Refrigerant System
Routine Maintenance
Apparent leap in heating
Valve will not shift from cool to heat Valve will
not shift from cool to heat
Starts to shift but does not complete reversal
PROBLEM
Troubleshooting Cooling
PROBLEM
PROBLEM
POSSIBLE CAUSE
PROBLEM
PROBLEM
PROBLEM
Poorly installed unit
Evaporator drain pan cracked or
PROBLEM
Troubleshooting Heating Heat pumps
PROBLEM
PROBLEM
Outdoor thermostat does not cut off
TO CORRECT
PROBLEM
PROBLEM
POSSIBLE CAUSE
PROBLEM
Troubleshooting Heating Cooling/Electric Models
PROBLEM
PROBLEM
POSSIBLE CAUSE
Troubleshooting Chart - Cooling
REFRIGERANT SYSTEM DIAGNOSIS COOLING
PROBLEM
SYSTEM COOLS WHEN HEATING IS DESIRED
Troubleshooting Chart - Heating
Electrical Troubleshooting Chart Heat Pump
REFRIGERANT SYSTEM DIAGNOSIS - HEATING
MODELS
WIRING DIAGRAM
SCHEMATIC
SQ06J10B-B, SQ06J10B-A, SQ08J10C-A, SQ08J10D-A
WIRING DIAGRAM
SCHEMATIC
MODELS
SEE DETAIL A
WIRING DIAGRAM
SCHEMATIC
MODELS
SYSTEM SWITCH
KQ08J10B-1, KQ08J10B-A, KQ08J10C-A
WIRING DIAGRAM
SCHEMATIC
WIRING DIAGRAM
SCHEMATIC
MODELS
MODEL YQ06J10B-A
PTCR WIRING DIAGRAM
SCHEMATIC
MODEL SC06H10D
SCHEMATIC
SS08J10R-B, SS08J10R-A, SS09J10C-A, SS10J10AR-A
SS12J10AR-B, SS14J10R-A, SS12J30D-A, SS16J30A-A
SS18J30R-A, SM20J30-A, SM24J30-A
MODELS SL28J30B-A, SL35J30-A, SL35J30-B
SCHEMATIC
WIRING DIAGRAM
KS12J30B-A, KS18J30-A, KM20J30-A, KM24J30-A
SCHEMATIC
WIRING DIAGRAM
MODELS
MODELS
WIRING DIAGRAM
SCHEMATIC
MODELS
YS12J33-A, YM18J34B-A, YL24J35C-A
WIRING DIAGRAM
SCHEMATIC
SCHEMATIC
MODEL
YS09J10B-A
WIRING DIAGRAM
MODELS
EQ08J11-A, EQ08J11-B
WIRING DIAGRAM
SCHEMATIC
WS07A10E-B, WS07A10E-C, WS10A10-A, WS12A10E-A
WIRING DIAGRAM
SCHEMATIC
MODELS
MODELS
WE09A33E-B, WE12A33E-A, WE15A33-A
WIRING DIAGRAM
SCHEMATIC
MODELS
WY09A33F-A, WY12A33G-A
WIRING DIAGRAM
SCHEMATIC
2001 XQ Boards & QME Boards
Testing The Electronic Control
Checking Room Temperature
RACServMn
FRIEDRICH AIR CONDITIONING CO
Post Office Box 1540 · San Antonio, Texas
4200 N. Pan Am Expressway · San Antonio, Texas