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