Friedrich VERT-I-PAK VHA09K25RTP Guía
1 PB
Service/ Parts Manual
VERT-I-PAK
Standard Chassis Models
9K VHA - 09K25RTP, 09K34RTP, 09K50RTP
VHA - 09R25RTP, 09R34RTP, 09R50RTP
VHA - 18K25RTP, 18K34RTP, 18K50RTP, 18K75RTP
VHA - 18R25RTP, 18R34RTP, 18R50RTP, 18K75RTP
12K
18K
95992012_03
VHA - 12K25RTP, 12K34RTP, 12K50RTP
VHA - 12R25RTP, 12R34RTP, 12R50RTP
24K VHA - 24K25RTP, 24K34RTP, 24K50RTP, 24K75RTP, 24K10RTP
VHA - 24R25RTP, 24R34RTP, 24R50RTP, 24R75RTP, 24R10RTP
PTAC Direct Sales, Inc.
185 S. Kimball Ave.
Suite 1 30
Southlake, TX 76092
877.454.7822 (T)
2 PB
Table of Contents
INTRODUCTION 4
Important Safety Information 4
Personal Injury Or Death Hazards 5
Operation of Equipment in During Construction 7
Equipment Identication 8
Model and Serial Number Location 8
Model and Serial Number information is found on the Manufacturer’s DATA TAG, located on the front or top. 8
Model Number Reference Guide 9
Serial Number Reference Guide 10
SPECIFICATIONS 11
General Specications 11
Chassis Specications 9K, 12K 12
18K Dimensions 13
24K Dimensions 14
Electrical Data 15
Electrical Requirements 17
Electrical Ratings Table 17
Supply Air Flow and Data 19
OPERATION 21
Electronic Control Board Features 21
Electronic Sequence of Operation 22
Compressor Lock Out Time 23
Cooling Fan Delay 23
Heating Fan Delay 23
Fan Speed Change Delay 23
Room Air Sampling Feature 23
Low Voltage Interface Connections 23
Interface Connector Denitions 23
Remote Wall Thermostat 24
Remote Wall Thermostat Location 25
Desk Control 25
Auxiliary Fan Control 25
Unit Heat Control Operation - Heat Pump With Electric Heat 26
Refrigeration Sequence Of Operation 27
REMOVE AND INSTALL THE CHASSIS 29
Remove The Chassis 29
Servicing / Chassis Quick Changeouts 29
To Remove the Chassis from the Closet: 29
R-410A SEALED SYSTEM REPAIR 30
Refrigerant Charging 31
Undercharged Refrigerant Systems 32
Overcharged Refrigerant Systems 33
Restricted Refrigerant System 34
Sealed System Method of Charging/ Repairs 35
EXTERNAL STATIC PRESSURE 36
Checking External Static Pressure 36
Explanation of charts 37
Indoor Airow Data 37
Ductwork Preparation 37
Fresh Air Door 38
Checking Approximate Airow 38
Electric Heat Strips 38
COMPONENT TESTING 39
Hermetic Components Check 39
Reversing Valve Description And Operation 40
Testing The Reversing Valve Solenoid Coil 41
Checking The Reversing Valve 42
Touch Test Chart : To Service Reversing Valves 44
Compressor Checks 45
Compressor Replacement -Special Procedure in Case of Compressor Burnout 48
3 PB
Fan Motor 49
Capacitors 49
Heating Element and Limit Switch 50
Heater Elements And Limit Switches’ Specications 50
Drain Pan Valve 52
Thermistor Resistence Values (This Table Applies to All Thermistors) 53
Testing the Diagnostic Service Module 54
Testing the Electronic Control Board 54
Electronic Control Board Components Identication And Testing 55
24k Indoor Blower Motor 56
TROUBLESHOOTING 57
Error Codes and Alarm Status 57
Electrical Troubleshooting Chart - Cooling 59
9K Btu, 12K Btu, & 18K Btu 59
24K Btu 60
Electrical Troubleshooting Chart - Heat Pump 61
Troubleshooting Chart - Cooling 62
WIRING DIAGRAMS 63
9-12K 208/230V 63
9-12K 265V 64
18K 208/230V (2.5KW, 3.5KW, 5KW) 65
18K 265V (2.5KW, 3.5KW, 5.0KW) 66
18K 208/230V (7.5KW) 67
18K 265V (7.5KW) 68
24K 208/230V (2.5KW, 3.5KW, 5KW) 69
24K 208/230V (7.5KW AND 10KW) 70
24K 265V (2.5KW, 3.5KW, 5KW) 71
24K 265V (7.5KW and 10KW) 72
PARTS CATALOG 73
9K, 12K Unit Assembly 73
9K, 12K Refrigeration Assy 76
9K, 12K 208/230V 78
9K, 12K 265V 80
18K Unit Assembly 82
24K Unit Assembly 84
18K, 24K Refrigeration Assembly 86
18K Blower Assembly 89
24K Blower Assembly 91
18K 230V Control Box 93
24K 230V Control Box 95
18K 265V Control Box 97
24K 265V Control Box 99
AVAILABLE ACCESSORIES 101
WARRANTY 102
FRIEDRICH AUTHORIZED PARTS DEPOTS 103
4 PB
Your safety and the safety of others is very
important.
We have provided many important safety messages in this manual and on your appliance. Always read
and obey all safety messages.
This is a safety Alert symbol.
This symbol alerts you to potential hazards that can kill or hurt you and
others.
All safety messages will follow the safety alert symbol with the word
“WARNING”
or “CAUTION”. These words mean:
Indicates a hazard which, if not avoided, can result in severe personal
injury or death and damage to product or other property.
Indicates a hazard which, if not avoided, can result in personal injury and
damage to product or other property.
All safety messages will tell you what the potential hazard is, tell you
how to reduce the chance of injury, and tell you what will happen if the
instructions are not followed.
WARNING
Refrigeration system
under high pressure
Do not puncture, heat, expose to flame or
incinerate.
Only certified refrigeration technicians should
service this equipment.
R410A systems operate at higher pressures
than R22 equipment. Appropriate safe service
and handling practices must be used.
Only use gauge sets designed for use with
R410A.
Do not use standard R22 gauge sets.
NOTICE
CAUTION
WARNING
The information in this manual is intended for use by a qualied technician who is familiar with the safety procedures
required for installation and repair, and who is equipped with the proper tools and test instruments required to
service this product.
Installation or repairs made by unqualied persons can result in subjecting the unqualied person making such
repairs as well as the persons being served by the equipment to hazards resulting in injury or electrical shock
which can be serious or even fatal.
Safety warnings have been placed throughout this manual to alert you to potential hazards that may be encountered.
If you install or perform service on equipment, it is your responsibility to read and obey these warnings to guard
against any bodily injury or property damage which may result to you or others.
Important Safety Information
INTRODUCTION
5 PB
SAFETY
FIRST
WARNING AVERTISSEMENT ADVERTENCIA
Do not remove, disable or
bypass this unit’s safety
devices. Doing so may
cause fire, injuries, or
death.
Ne pas supprime, désactiver
ou contourner cette l´unité
des dispositifs de sécurité,
faire vous risqueriez de
provoquer le feu, les
blessures ou la mort.
No eliminar, desactivar o
pasar por alto los dispositi-
vos de seguridad de la
unidad. Si lo hace podría
producirse fuego, lesiones o
muerte.
ELECTRICAL HAZARDS:
• Unplug and/or disconnect all electrical power to the unit before performing inspections, maintenance, or service.
• Make sure to follow proper lockout/tag out procedures.
• Always work in the company of a qualied assistant if possible.
• Capacitors, even when disconnected from the electrical power source, retain an electrical charge potential
capable of causing electric shock or electrocution.
• Handle, discharge, and test capacitors according to safe, established, standards, and approved procedures.
• Extreme care, proper judgment, and safety procedures must be exercised if it becomes necessary to test or
troubleshoot equipment with the power on to the unit.
• Do not spray water on the air conditioning unit while the power is on.
• Electrical component malfunction caused by water could result in electric shock or other electrically unsafe
conditions when the power is restored and the unit is turned on, even after the exterior is dry.
• Use air conditioner on a single dedicated circuit within the specied amperage rating.
• Use on a properly grounded outlet only.
• Do not cut or modify the power supply cord or remove the ground prong of the plug.
• Never operate the unit on an extension cord.
• Follow all safety precautions and use proper and adequate protective safety aids such as: gloves, goggles,
clothing, properly insulated tools, and testing equipment etc.
• Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.
INTRODUCTION
Personal Injury Or Death Hazards
6 PB
• REFRIGERATION SYSTEM REPAIR HAZARDS:
• Use approved standard refrigerant recovering procedures and equipment to relieve high pressure before
opening system for repair.
• Do not allow liquid refrigerant to contact skin. Direct contact with liquid refrigerant can result in minor to
moderate injury.
• Be extremely careful when using an oxy-acetylene torch. Direct contact with the torch’s ame or hot surfaces
can cause serious burns.
• Make certain to protect personal and surrounding property with re proof materials and have a re extinguisher
at hand while using a torch.
• Provide adequate ventilation to vent off toxic fumes, and work with a qualied assistant whenever possible.
• Always use a pressure regulator when using dry nitrogen to test the sealed refrigeration system for leaks,
ushing etc.
• MECHANICAL HAZARDS:
• Extreme care, proper judgment and all safety procedures must be followed when testing, troubleshooting,
handling, or working around unit with moving and/or rotating parts.
• Be careful when, handling and working around exposed edges and corners of the sleeve, chassis, and other unit
components especially the sharp ns of the indoor and outdoor coils.
• Use proper and adequate protective aids such as: gloves, clothing, safety glasses etc.
• Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.
• PROPERTY DAMAGE HAZARDS
• FIRE DAMAGE HAZARDS:
• Read the Installation/Operation Manual for the air conditioning unit prior to operating.
• Use air conditioner on a single dedicated circuit within the specied amperage rating.
• Connect to a properly grounded outlet only.
• Do not remove ground prong of plug.
• Do not cut or modify the power supply cord.
• Do not use extension cords with the unit.
• Be extremely careful when using acetylene torch and protect surrounding property.
• Failure to follow these instructions can result in re and minor to serious property damage.
• WATER DAMAGE HAZARDS:
• Improper installation, maintenance or servicing of the air conditioner unit can result in water damage to personal
items or property.
• Insure that the unit has a sufcient pitch to the outside to allow water to drain from the unit.
• Do not drill holes in the bottom of the drain pan or the underside of the unit.
• Failure to follow these instructions can result in damage to the unit and/or minor to serious property damage.
INTRODUCTION
Personal Injury Or Death Hazards
7 PB
INTRODUCTION
Operation of Equipment in During Construction
• OPERATION OF EQUIPMENT MUST BE AVOIDED DURING CONSTRUCTION PHASES WHICH
WILL PRODUCE AIRBORNE DUST OR CONTAMINTES NEAR OR AROUND AIR INTAKE
OPENINGS:
• Wood or metal framing;
• Drywalling or sheathing,
• Spackling or applying joint compound.
• Sanding or grinding.
• Moulding or trimwork.
NOTICE
Operating the equipment during any phase of
active construction noted above can void the
equipment’s warranty, and also lead to poor
performance and premature failure.
8PB
INTRODUCTION
This service manual is designed to be used in conjunction with the installation and operation manuals provided
with each air conditioning system.
This service manual was written to assist the professional service technician to quickly and accurately diagnose
and repair malfunctions.
Installation procedures are not given in this manual. They are given in the Installation and Operation Manual which
can be aquired on the Friedrich website (www.friedrich.com).
Model and Serial Number Location
Equipment Identication
Figure 101 (Equipment Identication Example)
Figure 102 (Model and Serial Number Location)
Model and Serial Number information is found on the Manufacturer’s DATA TAG, located on the front or top.
9 PB
INTRODUCTION
Model Number Reference Guide
SERIES
V=VERTICAL SERIES
FUNCTION
H - HEAT PUMP
DESIGN SERIES
A = 32”/47” CABINET
NOMINAL CAPACITY
A SERIES (Btu/h)
09= 9,000
12 = 12,000
18 = 18,000
24 = 24,000
ENGINEERING REVSION
LETTER INDICATES AN
ENGINEERING MODIFI-
CATION TO AN EXISTING
MODEL
MARKETING SUFFIX LETTER
INDICATES MODIFICATION TO
AN EXISTING MODEL SERIES
OPTIONS
RT = STANDARD REMOTE
OPERATION
ELECTRIC HEATER SIZE
A SERIES
25 = 2.5 KW 75 = 7.5KW
34 = 3.4 KW 10 = 10KW
50 = 5.0 KW
VOLTAGE
K = 208/230V - 1PH-60Hz
R = 265V
IMPORTANT: It will be necessary for you to accurately identify the unit you are servicing, so you can be certain of a
proper diagnosis and repair.
Figure 103
V H A 09 K 34 RT P - A
10 PB
INTRODUCTION
Serial Number Reference Guide
YEAR OF MANUFACTURE
17 = 2017 18 = 2018
19 = 2019 20 = 2020
21 = 2021 22 = 2022
MONTH OF MANUFACTURE
01 = JANUARY
02 = FEBRUARY
03 = MARCH
04 = APRIL
05 = MAY
06 = JUNE
07 = JULY
08 = AUGUST
09 = SEPTEMBER
10 = OCTOBER
11 = NOVEMBER
12 = DECEMBER
MANUFACTURING LOCATION
NUMERIC SEQUENCE
FIRST UNIT OF EACH MONTH = 00001
Figure 104
17 12 M 00001
Este manual sirve para los siguientes modelos
29
Tabla de contenidos
