Friedrich 9, 000 BTU'S service manual Table of Contents

Table of Contents

Important Safety Information	2
Introduction	4
Vert-I-Pak Model Number Identification Guide	5
Serial Number Identification Guide	5
2009 Models Chassis Specifications/Performance	6-7
2008 Models Chassis Specifications/Performance	8-9
Electrical Requirements	10
Remote Thermostat and Low Voltage Control	11-12
V-PAK Electronic Control Board Features	13
Electronic Control Configuration	14
Electronic Control Error Code
Diagnostics/Test Mode	14-15
Electronic Control Board/Wall Thermostat
Sequence of Operation	16-18
Component Description	19
Checking External Static Pressure	20
Checking Approximate Airflow	20
Airflow Charts	21
Components Testing	22-23
Refrigeration Sequence of Operation	24
Service	25
Sealed Refrigeration System Repairs	26
Refrigerant Charging	26
Method Of Charging	27
Undercharged Refrigerant Systems	28
Overcharged Refrigerant Systems	28
Restricted Refrigerant Systems	29
Capillary Tube Systems/Check Valve	30

Reversing Valve — Description/Operation		31
Testing Coil		32
Checking Reversing Valves		32
Reversing Valve
Touch Testing Heating/Cooling Cycle		33
Procedure For Changing Reversing Valve		33
Compressor Checks		34
Locked Rotor Voltage Test		34
Single Phase Connections		34
Determine Locked Rotor Voltage		34
Locked Rotor Amperage Test		34
Single Phase Running & Locked Rotor Amperage		35
External Overload		34
Checking the External Overload	...................................	34
Checking the Internal Overload		34
Compressor Single Phase Resistance Test		35
Compressor Replacement		36-37
Routine Maintenance		38-39
9-18 Electrical Troubleshooting	Chart – Cooling	40
2-Ton Electrical Troubleshooting	Chart – Cooling	41
Refrigerant System Diagnosis – Cooling		42
Refrigerant System Diagnosis – Heating		43
Electrical Troubleshooting Chart –Heat Pump		43
Electrical and Thermostat Wiring Diagram		44-49
Thermistors Resistance Valves		50
Accessories		51
Warranty		52

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