Contents
2003
Table of Contents
RAC Serial Number Identification Guide
1st Digit Function
00001
Page
Data Evaporator AIR Operating Electrical Breaker
Pressures Ratings Refrig Fuse
Performance Evaporator AIR Operating Electrical Breaker Data
SS10J10AR-A
TEMP. DEG. F Pressures Ratings
Heating
SC06H10E
Btuh
WY09A33F-A WY12A33F-A Heating
Amps
Refrigeration System Sequence of Operation
Wire Size
Fuse/Circuit
Breaker
Grounding
Winding Test
Thermal Overload External
Checking Compressor Efficiency
Terminal Overload Test
Terminal Overload Internal
Checking the Internal Overload
FAN Motor
Resistor
System Control Panel
System Control Panel KQ Models Only- See Figure
EQ Model Only See Figure
System Control Panel YQ Model Only
System Control Switch WE & WY Models See Figure
System Control Switch Test
System Control Switch KS, SS, KM, SM, SL Models See Figure
System Control Panel See Figure
System Control Switch
Heat Pump & Electric Heat Models See Figure
To SET Mode of Operation
To Adjust Temperature
To Adjust FAN Speed
Smart Center Electronic Control Center
To SET the Timer
Testing the Electronic Control
Testing the Electronic Control Error Code Listings
To SET Hour Clock
Test
Thermostat SQ & KQ Models See Figure
Thermostat YQ Model Only See Figure
Thermostat Models ES, YS, EM, YM, EL, YL See Figure
Defrost Thermostat Heat Pump Models Only
Thermostat Adjustment
Thermostat Bulb Location
CAPACITOR, RUN See Figure
Defrost Bulb Location Heat Pump Models Only
Capacitor Test
Check Valve Operation
Heat Pumps Reversing Valve See Figure
Solenoid Coil Heat Pump Models Only See Figure
Testing Reversing Valve
To Test
VALVE, Drain PAN See Figure
Heating Element See Figure
Sealed Refrigeration System Repairs
Equipment Required
Hermetic Component Replacement
Special Procedure in the Case Compressor Motor Burnout
Rotary Compressor Special Troubleshooting and Service
Equipment Must be Capable
Undercharged Refrigerant Systems
Method of Charging
Overcharged Refrigerant Systems
Restricted Refrigerant System
Routine Maintenance
Troubleshooting Touch Test Chart To Service Reversing Valves
Troubleshooting Cooling
Problem To Correct
Problem Possible Cause To Correct
Cycles
Problem Possible Cause To Correct
Troubleshooting Heating Heat pumps
Problem Possible Cause To Correct
Off and the electric element is energized
Troubleshooting Heating Cooling/Electric Models
Troubleshooting Chart Cooling
System Cools When Heating is Desired
YES
Models
SQ06J10B-B, SQ06J10B-A, SQ08J10C-A, SQ08J10D-A
Models
KQ08J10B-1, KQ08J10B-A, KQ08J10C-A
Schematic
Model
YQ06J10B-A
Model SC06H10D
619-405-06
SL28J30B-A, SL35J30-A, SL35J30-B
Alternate
Conductor Or Brown RED Blue To Capacitor Bracket
Wiring Diagram
YS12J33-A, YM18J34B-A, YL24J35C-A
Model
EQ08J11-A, EQ08J11-B
IDT Ovld Neutral
WE09A33E-B, WE12A33E-A, WE15A33-A
WY09A33F-A, WY12A33G-A
Testing The Electronic Control XQ Boards & QME Boards
Checking Room Temperature
Friedrich AIR Conditioning CO