Table Of Contents - Friedrich VERT-I-PAK VHA09K25RTQ Service Manual

Table of Contents

INTRODUCTION
Important Safety Information
Personal Injury Or Death Hazards
Operation of Equipment in During Construction
Equipment Identification
Model Number Identification Guide
Serial Number Identification Guide
SPECIFICATIONS
Electrical Specifications
General Specifications
Electrical Requirements
Airflow Data (Condenser)
Chassis Specifications 9K, 12K
18K Dimensions
24K Dimensions
OPERATION
Sequence of Operation
Defrost Control Board
Remote Thermostat Connection
General Knowledge Sequence Of Refrigeration
REMOVE AND INSTALL THE CHASSIS
EXTERNAL STATIC PRESSURE
Checking External Static Pressure
Explanation of Tables
Indoor Airflow Data
Ductwork Preparation
Fresh Air Door
Checking Approximate Airflow
TROUBLESHOOTING
Control Diagnostic Modes
COMPONENT IDENTIFICATION
230 Volt Electrical Control Box
Defrost Control Board
COMPONENT TESTING
Reversing Valve Description And Operation
Testing The Reversing Valve Solenoid Coil
Checking The Reversing Valve
Touch Test Chart : To Service Reversing Valves
Compressor Checks
Heating Element and Limit Switches
Heater Assembly Removal
Drain Pan Valve
Check Evaporator Blower Motor and Control Board
Replace Evaporator Blower Motor
Outdoor Fan Check
Outdoor Fan Replacement
R-410A SEALED SYSTEM REPAIR
Refrigerant Charging
Sealed System Method of Charging/ Repairs
Undercharged Refrigerant Systems
An undercharged system will result in poor performance (low pressures, etc.) in both the heating and cooling cycle.
Overcharged Refrigerant Systems
Restricted Refrigerant System
Compressor Replacement
Compressor Replacement -Special Procedure in Case of Compressor Burnout
Replace The Reversing Valve
WIRING DIAGRAMS
208/230V 2.5kW
208/230V 3.4 kW
208/230V 5kW
208/230V 7.5kW
208/230V 10kW
265V 2.5kW
265V 3.4kW
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