Table Of Contents - Friedrich PTAC series Service Manual

Important Safety Information ...........................................2-4
Introduction .........................................................................4
Unit Identification ................................................................5
Component Identification ....................................................6
Chassis Specifications ........................................................7
Performance Data ...............................................................8
Electrical Rating Tables .......................................................9
Power Cord Information ......................................................9
Remote Wall Thermostat / Low Voltage
Wire Connections .............................................................10
Digital Control Features ...............................................11-12
Digital Control Operation ..................................................13
Digital Control User Input Configuration ...........................14
Optional Hand Held Remote Control Operation ...............15
Digital Control Diagnostics & Test Mode ..........................15
Electronic Control Error Code Diagnostics .......................16
Components Testing ....................................................17-18
Refrigeration System Sequence of Operation ..................19
Sealed Refrigeration System Repairs ...............................20
Refrigerant Charging .........................................................20
Method Of Charging ..........................................................21
Undercharged Refrigerant Systems .............................21-22
Overcharged Refrigerant Systems ....................................22
Restricted Refrigerant Systems .........................................22

Table of Contents

Capillary Tube Systems/Check Valve ...........................23
Reversing Valve - Description/Operation ...................24
Testing Coil ...................................................................24
Checking Reversing Valves .....................................24-25
Reversing Valve
Touch Testing Heating/Cooling Cycle ..........................25
Procedure For Changing Reversing Valve ..............25-26
Compressor Checks .....................................................26
Locked Rotor Voltage Test ............................................26
Single Phase Connections ............................................26
Determine Locked Rotor Voltage ..................................26
Locked Rotor Amperage Test ........................................26
Single Phase Running & Locked Rotor Amperage .......28
Checking the Overload ............................................26-27
External Overload .........................................................27
Compressor Single Phase Resistance Test ..................27
Compressor Replacement .......................................28-29
Routine Maintenance ....................................................29
Troubleshooting Charts ................................................
Wiring Diagram Index .............................................................
Wiring Diagrams for Cool with Electric Heat .........
Wiring Diagrams for Heat Pump with Electric Heat ..............
Remote Thermostat Wiring Diagram .................................
Technical Service Data ......................................................
....30-31
32
................33
..34
.....35
.....36
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