Friedrich PTAC R-32 Series Service Manual
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Friedrich PTAC R-32 Series Service Manual

Packaged terminal air conditioners & heat pumps
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Freshaire
PTAC
Packaged Terminal Air
Conditioners & Heat Pumps
Standard Chassis Models
Using R-32 Refrigerant
9K
12K
1
94132000_00
R-32 Series
®
PVH09K3FC, PVH09R3FC
PVH12K3FC, PVH12R3FC
THE EXPERTS IN ROOM AIR CONDITIONING

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  • Page 1 Freshaire R-32 Series ® PTAC Packaged Terminal Air Conditioners & Heat Pumps Standard Chassis Models Using R-32 Refrigerant PVH09K3FC, PVH09R3FC PVH12K3FC, PVH12R3FC THE EXPERTS IN ROOM AIR CONDITIONING 94132000_00...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Table of Contents INTRODUCTION Important Safety Information Personal Injury Or Death Hazards Operation of Equipment in During Construction Typical Unit Components and Dimensions Model Number Reference Guide Serial Number Reference Guide Product Features SPECIFICATIONS General Specifications Electrical Data OPERATION Function and Control Advanced Functions...
  • Page 3 Replace The Reversing Valve WIRING DIAGRAM APPENDIX Accessories Interactive Parts Viewer Limited Warranty Appendix 1 Reference Sheet Of Celsius And Fahrenheit Appendix 2 Resistance Table Of Thermistors (5k) Appendix 2 Resistance Table Of Thermistors (50k)(Compressor Discharge Sensor) Friedrich Authorized Parts Depots...

  • Page 4: Introduction

    Installation procedures are not given in this manual. They are given in the Installation/Operation manual which can be acquired on the Friedrich website. Click the Link or scan the QR code to be directed to the Professional page where you can locate our technical literature.

  • Page 5: Personal Injury Or Death Hazards

    CAUTION: Do Not Operate Equipment During Active Stages Of Construction To ensure proper operation, Friedrich requires that all equipment is not operated during active construction phases. This includes active stages of completing framing, drywalling, spackling, sanding, painting, flooring, and moulding in the equipment’s designated conditioning space. The use of this equipment during construction could result in premature failure of the components and/or system and is in violation of our standard warranty guidelines.
  • Page 6 INTRODUCTION Personal Injury Or Death Hazards AVERTISSE- ADVERTEN- WARNING MENT SAFETY Do not remove, disable or Ne pas supprime, désactiver No eliminar, desactivar o FIRST bypass this unit’s safety ou contourner cette l´unité pasar por alto los dispositi- devices. Doing so may des dispositifs de sécurité, vos de seguridad de la cause fire, Doing so may...
  • Page 7 INTRODUCTION Personal Injury Or Death Hazards • 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. •...

  • Page 8: Operation Of Equipment In During Construction

    INTRODUCTION Operation of Equipment in During Construction • OPERATION OF EQUIPMENT MUST BE AVOIDED DURING CONSTRUCTION PHASES WHICH WILL PRODUCE AIR- BORNE DUST OR CONTAMINATES NEAR OR AROUND AIR INTAKE OPENINGS: • Wood or metal framing; • Dry walling or sheathing, •...

  • Page 9: Model Number Reference Guide

    INTRODUCTION Model Number Reference Guide MODEL NUMBER V H 09 Engineering Digit Series PV = Friedrich Digital PTAC Design Series System E = Cooling with Electric Heat H = Heat Pump with Auxiliary Electric Heat Chassis F = FreshAire Nominal Capacity...

  • Page 10: Product Features

    INTRODUCTION Product Features...
  • Page 11 INTRODUCTION Product Features...

  • Page 12: Specifications

    SPECIFICATIONS Table 201 General Specifications Specification Unit PVH09K3FC PVH12K3FC PVH09R3FC PVH12R3FC Power supply (V-Ph- 230V-208V/1Ph/60Hz 230V-208V/1Ph/60Hz 265V/1Ph/60Hz 265V/1Ph/60Hz Operation Volt Range 253–187 253–187 292–239 292–239 Cooling Capacity - Test Data 10240/10190 12470/12430 10150 12430 Cooling Capacity - Rated 9800/9700 12000/11800 9800 12000 Reverse Cooling Capacity Min./...
  • Page 13 SPECIFICATIONS Table 201 General Specifications Specification Unit PVH09K3FC PVH12K3FC PVH09R3FC PVH12R3FC Indoor Fan Noise Level(turn off 41~49 Fan mode 44~53 Fan mode 44~49（Fan mode（ 44~52（Fan mode（ the fresh air) Indoor Fan Noise Level(turn on 55~56(cooling mode) 54~56(cooling mode) 54~55(cooling mode) 55~56(cooling mode) the fresh air)cooling mode Indoor Fan Noise Level(turn off...
  • Page 14 SPECIFICATIONS 21 1/2 Unit:inch Figure 202 ( Chassis Specs) Figure 203 (Typical Unit Components and Dimensions)

  • Page 15: Electrical Data

    Failure to do so can result in property damage, personal injury and/or death. B. Power Cord Information (230/208V models only) All Friedrich 230/208V PTAC units are shipped from the factory with a Figure 205 Leakage Current Detection Interrupter (LCDI) equipped power cord. The...
  • Page 16 SPECIFICATIONS Electrical Data TABLE 206 MODEL HEATER kW Power Cord Kit Voltage Watts Receptacle BRANCH CKT AMPS PVH09K 2.5(optional) PXPCFA23015 230/208 13.9 2500 NEMA 6-15r 3.5(default) PXPCFA23020 230/208 19.9 3600 NEMA 6-20r PVH12K 1.5(optional) PXPCFA23015 230/208 NEMA 6-15r 13.9 2500 3.5(default) PXPCFA23020 230/208...
  • Page 17 SPECIFICATIONS Electrical Data...

  • Page 18: Operation

    OPERATION Function and Control Buttons and Display 1) Buttons There are ON/OFF, UP, DOWN, HEAT, COOL, CONSTANT FAN and fan speed of HIGH, LOW, AUTO buttons. 1. ON/OFF: Press to turn power on or off to the unit. 2. COOL, HEAT: choose the mode of operation 3.
  • Page 19 OPERATION Function and Control Electric heating mode: The unit is equipped with a universal E-heater, which contains two independent heating elements. The 20A heater incorporates a 2.5kW and a 1.0kW element. The 30A heater incorporates a 3.5kW and a 1.5kW element. Power Cord Selection Use the appropriate power cord for each heating configuration as shown in the table below.
  • Page 20 OPERATION Function and Control 7) Smart fresh air system The control logic as the below table 1 and table 2 , the DIP switch is SW3 on the main board. DIP switch SW3 function Freshaire Engagement Method Mode Description System Sw3 Dip Switch 1 ON/ OFF FA fan runs only when Dip...
  • Page 21 OPERATION Function and Control Relationship Between Inputs and Output by 24V Wall Thermostat INPUTS OUTPUT FreshAire Mode 24V wall In Demand No Demand Thermostat Enable Continuous ID Fan ID Fan Operation Fresh-Air Fan ID Fan Operation Fresh-Air Fan Speed Selection Operation Operation High...

  • Page 22: Advanced Functions

    Return to Basic Troubleshooting OPERATION Function and Control Advanced Functions 1) DIP Switch Function [after reprogramming, disconnect the power cord and wait 2 minutes for the electronic components (capacitors/ resistors) to cool down or bleed off. Then power up again to make changes effective] 1 Reserved 2 Heat pump ON- valid;...

  • Page 23: Memory Function

    OPERATION Function and Control Advanced Settings Example Setting target: d0(C), d1(r), d2(86°F), d3(64°F), d4(30°F), d5(1). Step 1: hold [HEAT] and [FAN SPEED] two keys at the same time continuously for 5 seconds. Display:’d0’’ Step 2: short press [HEAT] key. Display: ‘F’ Step 3: short press [+] or [-] key.

  • Page 24: Protection Functions

    OPERATION Function and Control Control logic (a). Turn ON unit: short R and FD then release one time within 5s. (b). Turn OFF unit: short R and FD then release twice within 5s. (c). Force unit shut down for one time: short R and FD short over 5s. NOTE: After forcing unit shut down, you can turn on the unit again by control panel.
  • Page 25 OPERATION Function and Control 9) Communication fault protection If communication faults between indoor unit and outdoor unit for continuously 2 minutes, unit will shut down and display error code on display panel. 10) Compressor starting fault If compressor fails to start, it will try to restart after 3 minutes. Error code will not be displayed on display panel for the first 3 attempts to restart.

  • Page 26: System Configuration Fresh Air Vent Control

    OPERATION System Configuration Fresh Air Vent Control...
  • Page 27 OPERATION System Configuration Fresh Air Vent Control...
  • Page 28 OPERATION System Configuration Fresh Air Vent Control Engagement FreshAire System Mode Description Method SW3 DIP SWITCH Fresh-Air Fan runs only when Dip Switch is set to ‘ON’ SW3-1 ON / OFF ON/CON. Fresh-Air Fan NEVER RUNS when Dip Switch is set to ‘OFF’...

  • Page 29: Digital Control User Input Configuration

    OPERATION Digital Control User Input Configuration Digital Control Operation Figure 29 Digital Control Panel FRP029 Emergency Heat Operation Cooling Mode Pressing the “Cool” button after turn the unit on will put the unit into In the event of a compressor failure in heat pump mode, the compressor cooling mode.

  • Page 30: Settings- Detailed Configurations

    OPERATION Settings- Detailed Configurations This section is about how to set the unit operating parameter, include display temperature unit, Fahrenheit or Celsius, control master, temperature limit, temperature calibration, display set point or room temperature. Under OFF mode, hold [Cool] and [Low] two keys at the same time continuously for 5 seconds. This time displays ‘d0’, indicates that system has entered the senior operation status.

  • Page 31: General Knowledge Sequence Of Refrigeration

    OPERATION General Knowledge Sequence Of Refrigeration A good understanding of the basic operation of the refrigeration system is essential for the service technician. Without this understanding, accurate troubleshooting of refrigeration system problems will be more difficult and time consuming, if not (in some cases) entirely impossible. The refrigeration system uses four basic principles in its operation which are as follows: “Heat always flows from a warmer body to a cooler body.”...

  • Page 32: Refrigerant System Diagram

    OPERATION Refrigerant System Diagram (1)Cooling + Heat Pump + Auxiliary Electric Heater PDH07R3SG PDH09R3SG PDH12R3SG PDH15R5SG CENTRIFUGAL AXIAL FAN OR CROSS FAN COOLED AIR HOT DISCHARGED AIR HOT AIR COOLED AIR COMPRESSOR INDOOR COILS OUTDOOR COILS ELECTRIC HEATER CAPILLARY NOTES: COOLING MODE REFRIGERANT FLOW DIRECTION HEATING MODE...

  • Page 33: Routine Maintenance

    ROUTINE MAINTENANCE Coils & Chassis NOTE: Do not use a caustic (alkaline) or acidic cleaning agent on coils or base pan. Use a biodegradable cleaning agent and de-greaser. The use of harsh cleaning materials may lead to deterioration of the aluminum fins or the coil end plates. The indoor coil and outdoor coils and base pan should be inspected periodically (annually or semi-annually) and cleaned of all debris (lint, dirt, leaves, paper, etc.) as necessary.

  • Page 34: Installation

    FRP002 The above suggestions are for reference only and do not represent all possible installations.Please contact Friedrich for information regarding affects of other installation arrangements.By following these simple recommendations you can be confident that your Friedrich PTAC will provide years of worry free operation.

  • Page 35: Wall Sleeve Installation Instructions (Pdxws)

    INSTALLATION Wall Sleeve Installation Instructions (PDXWS) Wall Sleeve Installation Instructions (PDXWSA) NOTE: Insure that the unit is only installed in a wall structurally adequate to support the unit including the sleeve, chassis and accessories.If the sleeve projects more than 8" into the room, a subbase or other means of support MUST be used. Please read these instructions completely before attempting installation.

  • Page 36: Alternate Wall Installations

    INSTALLATION Alternate Wall Installations Figure 6 Figure 4 CurtainWall Panel Wall 1/4" MIN WALL OR PROJECTIO WINDOW CASE FLANGE (BY OTHERS) OPTIONAL SUBBASE OPTIONAL SUBBASE LEVELING SCREW LEVELING SCREW FRP006 FRP004 Figure 5 Figure 7 Frame and Brick Veneer Block and Brick Veneer 1/4"...
  • Page 37 INSTALLATION Alternate Wall Installations Figure 8 Wall Sleeve Attachment ALTERNATE FASTENING METHODS WALL (Field Supplied) SLEEVE NOTE: The Wall Sleeve must be horizontally level (side-to-side) and pitched 1/4 bubble to the WOOD SCREW outside when installed in an opening. TOGGLE BOLT The mounting hole location EXPANSION should be approximately 2-4”...
  • Page 38 INSTALLATION Alternate Wall Installations 5. Drill two 3/16" holes through each side of the sleeve approximately 7. If the chassis and exterior grille are to be installed later, leave the 4" from top and 4" from bottom of sleeve. Screw four #10 x 1" weatherboard and center support in place, otherwise remove and screws (included) or appropriate fasteners for your installation, dispose of them.

  • Page 39: Pxdr10Drainkitinstallation

    INSTALLATION PXDR10 Drain Kit Installation PXDR10DrainKitInstallation Remove the backing from the gasket and mount it on the flat side of the mounting plate (See Figure 12, Page 11). Insert the Instructions (optional for new drain tube through the hole in the gasket and mounting plate so the tube flange will be against the wall sleeve.

  • Page 40: External Drain

    INSTALLATION External Drain External Drain (for new Cover Plate Installation Mount the foam gasket to the cover plate. Using two #10 x ½" sheet construction or unit metal screws (provided), attach the cover plate to the remaining drain hole. Make certain the large flange on the plate is positioned replacement) at the bottom of the sleeve.

  • Page 41: Pxgastandard Grille

    INSTALLATION PXGA Standard Grille PXGAStandard Grille Insert the remaining screws into the remaining holes and tighten securely. Installation Instructions WARNING Remove the center support and weatherboard if still installed in the sleeve. Insert six plastic grommets into the grille openings from the outside Falling Object Hazard of the grille as shown in Figure 13.
  • Page 42 INSTALLATION PXGA Standard Grille CAUTION Figure 21 Unit Damage Hazard Removing Front Panel Failure to follow this caution may result in equipment damage or improper operation. Carefully remove shipping tape from the front panel and power vent door. See Figure 20. Figure 20 Shipping Tape Location FRP021...

  • Page 43: Remote Control Thermostat Installation

    INSTALLATION Remote Control Thermostat Installation...

  • Page 44: Front Desk Control Terminal

    WARNING responsibility to ensure that all control wiring e made in accordance with the installation The Friedrich PV model PTAC has built-in provisions for connection to an roper connection of the thermostat control Electrical Shock Hazard external switch to control power to the unit. The switch can be a central mpering with the unit's internal wiring can desk control system.

  • Page 45: Final Inspection & Start-Up Checklist

    & Operation manual, all accessory installation instructions, and the coil, and outdoor coil are free from any obstructions. name, address and telephone number of the Authorized Friedrich Warranty Service Company in the area for future reference if  Ensure that the entire installation is in compliance with all applicable necessary.

  • Page 46: Troubleshooting

    TROUBLESHOOTING Figure 711 Basic Troubleshooting Malfunction Possible Reasons Solution "Check the indicator LED on the LCID power head, Unit does not have power; Power line damaged it should be lit up, if not, push the RESET button, or power not available. if still no voltage, but power grid has output, you need to change the power cord."...
  • Page 47 TROUBLESHOOTING Figure 711 Basic Troubleshooting Malfunction Possible Reasons Solution Water dripping outdoors. Drain pipe kit not installed. Install the drain pipe kit. Install the wall sleeve according to the installation Water dripping indoors. Wall sleeve is not installed correctly. manual. When outdoor temperature is drop to 55°F (12.8°) Outdoor temperature is too low in cooling or below, it will cause that indoor coil to freeze.

  • Page 48: Error Code And Solutions

    Shutdown unit, and then remove power plug from wall or open fuse/ circuit breaker. Wait 3 or 4 minutes and then reapply power and restart the unit. If E8 error persists, contact Friedrich Technical Support at (1-800-541-6645). for further assistance.
  • Page 49 TROUBLESHOOTING Figure 712 Error code and solutions ERROR CODE Meaning Solutions Click link for reference IPM Over Heat or Over Check for low air flow or no air flow due to evaporator or condenser Operation section for Current Protection coil blocked with debris. details on dip switches.

  • Page 50: Unit Does Not Operate

    Return to Error Codes and Solutons TROUBLESHOOTING Figure 713 Unit Does Not Operate Unit Does Not Operate Remove Front Panel (Figure 501) Open Electrical Box (Figure 505) Check L1 and L2 for line voltage (220-265v) on Power PCB Check the fuses on Check LCDI Unit Is Line voltage the power PCB for...
  • Page 51 TROUBLESHOOTING Figure 713 Unit Does Not Operate Disconnect Display Connector CN6 on top of Main PCB Set multi meter do read low voltage DC and place Multi Meter leads on pins 3 and 7. Set multimeter to read continuity. Check all wiring and Check all wires on comms cable Is Fluctuating...

  • Page 52: Check Heater Coil

    TROUBLESHOOTING Check Heater Coil WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Failure to do so could result in serious injury or death.

  • Page 53: Check Electric Heater Control

    Return to Error Codes and Solutions TROUBLESHOOTING Figure 717 Check Electric Heater Control Check Heater Assembly. Replace Heater Assembly. Refer to Figures 714-716 on previous page. Does Heater Assembly check good? Check for 230/265v across relay 1 black and relay 2 Check line voltage connec�ons at blue wire on com terminals.

  • Page 54: Check Thermistors

    Return to Error Codes and Solutons TROUBLESHOOTING Figure 718 Check Thermistors WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Failure to do so could result in serious injury or death.

  • Page 55: Unit Disassembly And Component Replacement

    UNIT DISASSEMBLY AND COMPONENT REPLACEMENT Remove Chassis WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Failure to do so could result in serious injury or death.

  • Page 56: Remove User Interface

    UNIT DISASSEMBLY AND COMPONENT REPLACEMENT Remove User Interface WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Failure to do so could result in serious injury or death.

  • Page 57: Open Electrical Control Box

    Return to Basic Troubleshooting UNIT DISASSEMBLY AND COMPONENT REPLACEMENT Open Electrical Control Box WARNING Remove Main PCB (logic) Board ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it Remove front panel (Figure 501).

  • Page 58: Remove Power Cord

    Return to Basic Troubleshooting Return to Error Codes and Solutions UNIT DISASSEMBLY AND COMPONENT REPLACEMENT Remove Power Cord WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied.

  • Page 59: Remove Power Pcb

    Return to Error Codes and Solutions UNIT DISASSEMBLY AND COMPONENT REPLACEMENT Remove Power PCB WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied.

  • Page 60: Remove Ipm Pcb (Inverter Board)

    Return to Error Codes and Solutons UNIT DISASSEMBLY AND COMPONENT REPLACEMENT Remove IPM PCB (Inverter Board) WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied.

  • Page 61: Remove Blower Wheel

    UNIT DISASSEMBLY AND COMPONENT REPLACEMENT Remove Blower Wheel WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Failure to do so could result in serious injury or death.
  • Page 62 UNIT DISASSEMBLY AND COMPONENT REPLACEMENT Remove Blower Wheel (Continued) 9. Remove left panel (7 screws) (Figure 517). Figure 517 (Remove Left Panel) 10. Loosen set screw (DO NOT REMOVE) from blower motor shaft. (Figure 518). NOTE: Set screw is a 2.5 mm “Allen Head” screw. Figure 518 (Blower Wheel Set Screw)
  • Page 63 UNIT DISASSEMBLY AND COMPONENT REPLACEMENT Remove Blower Wheel (Continued) 11. Remove blower end plate (3 screws)(Figure 519). 12. Slide blower assembly out of left side of unit. Figure 519 (Blower End Plate)

  • Page 64: Remove Blower Wheel Motor

    WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Failure to do so could result in serious injury or death. Remove front panel (Figure 501).
  • Page 65 UNIT DISASSEMBLY AND COMPONENT REPLACEMENT Remove Blower Wheel Motor (Continued) 7. Remove mounting screws from electrical box rear and side covers and slide out of way to facilitate blower motor replacement (Figure 522). 8. Remove fan motor bracket (3 screws). 9.

  • Page 66: Remove Heating Element

    UNIT DISASSEMBLY AND COMPONENT REPLACEMENT Remove Heating Element WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Failure to do so could result in serious injury or death.

  • Page 67: Remove Fresh Air Components

    UNIT DISASSEMBLY AND COMPONENT REPLACEMENT Remove Fresh air Components WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Failure to do so could result in serious injury or death.
  • Page 68 UNIT DISASSEMBLY AND COMPONENT REPLACEMENT Remove Fresh air Components (Continued) 8) Remove fresh air actuator assembly (1 screw). 9) Remove fresh air fan assembly ( 2 screws). Figure 528 (Remove Fresh Air Actuator and Fan)

  • Page 69: Remove Outdoor Fan

    UNIT DISASSEMBLY AND COMPONENT REPLACEMENT Remove Outdoor Fan WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Failure to do so could result in serious injury or death.
  • Page 70 UNIT DISASSEMBLY AND COMPONENT REPLACEMENT Remove Outdoor Fan (Continued) 8. Remove Brackets and Shrouds (12 screws)(Figure 531 and 532). 9. Remove Mounting screws (4 places) (Figure 533). Figure 531 (Remove Brackets and Shroud) Figure 532 (Remove Brackets and Shroud) Figure 533 (Remove Mounting bolts)
  • Page 71 UNIT DISASSEMBLY AND COMPONENT REPLACEMENT Remove Outdoor Fan (Continued) 10. Pull up and remove fan housing (Figure 534). 11. Remove shaft nut and fan blade (Figure 535). 12. Remove motor (4 places) (Figure 536). Figure 534 (Remove Assembly) Figure 535 (Remove fan blade) Figure 536 (Remove Fan Motor)

  • Page 72: Remove Reversing Valve Solenoid

    UNIT DISASSEMBLY AND COMPONENT REPLACEMENT Remove Reversing valve Solenoid Remove Chassis from wall (Figure 501). 2. Remove front panel (Figure 501). Remove User Interface (Figures 502 thru 504). Open electrical Control Box (Figure 505). 5. Cut wire ties as required. 6.

  • Page 73: Component Testing

    COMPONENT TESTING Hermetic Components Check WARNING WARNING BURN HAZARD CUT/SEVER HAZARD Proper safety procedures must be followed, Be careful with the sharp edges and corners. and proper protective clothing must be worn when working with a torch. Wear protective clothing and gloves, etc. Failure to follow these procedures could Failure to do so could result in serious injury.

  • Page 74: Reversing Valve Description And Operation

    COMPONENT TESTING Reversing Valve Description And Operation A reversing valve is a component of a heat pump that changes the direction of WARNING refrigerant flow, allowing the system to function in both heating and cooling modes. ELECTRIC SHOCK HAZARD It consists of a pressure-operated, main valve and a pilot valve actuated by a Disconnect power to the unit before solenoid plunger.

  • Page 75: Compressor Checks

    Return to Error Codes and Solutons COMPONENT TESTING Compressor Checks WARNING WARNING ELECTRIC SHOCK HAZARD BURN HAZARD Turn off electric power before service or installation. Proper safety procedures must be followed, All electrical connections and wiring MUST be and proper protective clothing must be worn when working with a torch.
  • Page 76 COMPONENT TESTING Compressor Checks WARNING WARNING HIGH PRESSURE HAZARD ELECTRIC SHOCK HAZARD Turn off electric power before service or Sealed Refrigeration System contains refrigerant and oil under high pressure. installation. Extreme care must be used, if it becomes necessary to work on equipment with Proper safety procedures must be followed, power applied.

  • Page 77: Check Indoor And Outdoor Fan Motors

    Return to Error Codes and Solutons COMPONENT TESTING Check Indoor and Outdoor Fan Motors 6. Test Outdoor Fan motor. a. Restore power to unit. Gain Access to the Power PCB (Power Board). 1. Remove power from the unit. b. Place unit in cooling mode and ensure demand for cooling. The outdoor fan has two speeds, low and high.

  • Page 78: Check Outdoor Fan Motor Capacitor

    Return to Error Codes and Solutons COMPONENT TESTING Check Outdoor Fan Motor Capacitor Gain Access to the Power PCB (Power Board). Remove front panel (Figure 501). Remove User Interface (Figures 502 thru 504). Open electrical Control Box (Figure 505). WARNING RISK OF ELECTRIC SHOCK Unplug and/or disconnect all electrical power to the unit before performing inspections,...

  • Page 79: Main Pcb (Logic) Board Connector Identification

    COMPONENT TESTING Main PCB (logic) Board Connector Identification Figure 709 (Main PCB (logic) Board)

  • Page 80: Power Pcb (Power Board) Connector Identification

    Return to Error Codes and Solutons COMPONENT TESTING Power PCB (Power Board) Connector Identification DC Bus Lines (negative)) DC Bus Lines (positive) Fresh Air Fan High Fresh Air Fan Low Fresh Air Fan + MB Com Indoor Fan Motor L (L1) Output N (L2) Output Mod Com Reversing Valve...

  • Page 81: R-32 Sealed System Repair

    R-32 SEALED SYSTEM REPAIR General Information WARNING: Electrical Shock Hazard Disconnect all power to the unit before starting maintenance. All electrical connections and wiring MUST be installed by a qualified electrician and conform to all codes which have jurisdiction. Failure to do so can result in property damage, severe electrical shock or death.
  • Page 82 R-32 SEALED SYSTEM REPAIR General Information Warning: No ignition sources: No person carrying out work in relation to a REFRIGERATING SYSTEM which involves exposing any pipe work shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion. All possible ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of installation, repairing, removing and disposal, during which refrigerant can possibly be released to the surrounding space.

  • Page 83: Required Equipment

    R-32 SEALED SYSTEM REPAIR Required Equipment • Refrigeration Gauges rated for A2L Refrigerants with temp scales for R-32 refrigerant. • Gauge Manifold (Right handed threads). • A2L compatible Vacuum Gauge capable of 300 microns or less. • Nitrogen regulator for purging and testing, rated to 800 psi. (Capable of low psi flow) •...

  • Page 84: Refrigerant Removal, Recovery, And Evacuation

    R-32 SEALED SYSTEM REPAIR Refrigerant Removal, Recovery, and Evacuation NOTE: When accessing the refrigerant in the system to make repairs or for any other purpose, conventional procedures shall be used. However, for FLAMMABLE REFRIGERANTS (R-32 is classified in the A2L group for mildly flammable refrigerants) it is important that best practice is followed since flammability is a consideration.

  • Page 85: Component Replacement/Brazing

    R-32 SEALED SYSTEM REPAIR Component Replacement/Brazing Warning: • Ensure sufficient ventilation at the repair place. Warning: Presence of fire extinguisher. If any hot work is to be conducted on the refrigerating equipment or any associated parts, have a ABC class fire extinguisher available to hand. Warning: No person carrying out work in relation to a REFRIGERATING SYSTEM which involves exposing any pipe work shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion.

  • Page 86: Refrigerant Charging

    R-32 SEALED SYSTEM REPAIRS Refrigerant Charging WARNING: Electrical Shock Hazard Disconnect all power to the unit before starting maintenance. All electrical connections and wiring MUST be installed by a qualified electrician and conform to all codes which have jurisdiction. Failure to do so can result in property damage, severe electrical shock or death. WARNING: This Product uses R-32 Refrigerant Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer.

  • Page 87: Compressor Replacement

    R-32 SEALED SYSTEM REPAIRS Compressor Replacement 1. Be certain to perform all necessary electrical and refrigeration tests to be sure the compressor is actually defective before replacing. 2. Recover all refrigerant from the system though the process tubes. Refer to Refrigerant Removal, Recovery, and Evacuation Section of this WARNING...

  • Page 88: Compressor Replacement -Special Procedure In Case Of Compressor Burnout

    R-32 SEALED SYSTEM REPAIRS Compressor Replacement -Special Procedure in Case of Compressor Burnout 1. Recover all refrigerant and oil from the system. Refer to Refrigerant Removal, Recovery, and Evacuation Section of this manual. 2. Cut and remove compressor and capillary tube from the system. CAUTION: Seal all openings on the defective compressor immediately.

  • Page 89: Replace The Reversing Valve

    R-32 SEALED SYSTEM REPAIR Replace The Reversing Valve WARNING WARNING HIGH PRESSURE HAZARD EXPLOSION HAZARD Sealed Refrigeration System contains refrigerant The use of nitrogen requires a pressure and oil under high pressure. regulator. Follow all safety procedures and wear protective safety clothing etc. Proper safety procedures must be followed, and PPE must be utilized Failure to follow proper safety procedures...

  • Page 90: Wiring Diagram

    WIRING DIAGRAM Figure 801...

  • Page 91: Accessories

    APPENDIX Interactive Parts Viewer All Friedrich Service Parts can be found on our online interactive parts viewer. Please click on the link below: Interactive Parts Viewer For Further Assistance contact Friedrich customer service at (1-800-541-6645). Limited Warranty Current warranty information can be obtained by referring to...
  • Page 92 *Required for 265V installations. PDXDAA LATERAL DUCT ADAPTER Attaches to the Friedrich PTAC/PTHP unit to direct up to 35% of the total airflow to a second room. The unit-mounted duct plenum features a front-mounted aluminum grille that has two positions to provide the most optimal air direction.
  • Page 93 PDH model thermostat features high/low fan speed switch. Thermostat is hard wired and can be battery powered or unit powered. Features backlit display and multiple configuration modes. For use on Friedrich PTACs and Vert-I-Paks.
  • Page 94 PDE models or single stage cool, dual stage heat for PDH model thermostat features high/low fan speed switch. Thermostat is wireless and is battery powered. Features backlit display and multiple configuration modes. For use on Friedrich PTACs and Vert-I-Paks. PDXRTB REMOTE THERMOSTAT ESCUTCHEON KIT This kit contains ten escutcheons that can be placed over the factory control buttons when a remote wall mounted thermostat is used.
  • Page 95 As your room air experts, Friedrich remains committed to improving guest comfort and safety with our newest innovation, FreshAire IAQ solutions - a suite of indoor air quality accessories for use with Friedrich Air Conditioners, all with one dedicated purpose ®...

  • Page 96: Appendix

    APPENDIX Service Manual Appendix 1 Reference Sheet of Celsius and Fahrenheit Appendix: Appendix 1: Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Set temperature Fahrenheit Fahrenheit Fahrenheit display Fahrenheit display Fahrenheit Celsius display Fahrenheit Celsius Celsius(°C)

  • Page 97: Appendix 2 Resistance Table Of Thermistors (5K)

    APPENDIX Appendix 2 Resistance Table of Thermistors (5K) Temp Resis Temp Resis Temp Resis Temp Resis Temp Resis 130100 34252 10785 8275 3119 125518 33209 10499 8063 3048 121114 32202 10221 7857 2980 116881 31228 9952 7657 2913 112811 30288 9690 7462 2848...
  • Page 98 APPENDIX Appendix 2 Resistance Table of Thermistors (5K) (Cont) Temp Resis Temp Resis Temp Resis Temp Resis Temp Resis 1219 1195 1171 1148 1126 1104 1083 1062 1041 1021 1001...

  • Page 99: Appendix 2 Resistance Table Of Thermistors (50K)(Compressor Discharge Sensor)

    APPENDIX Appendix 2 Resistance Table of Thermistors (50K)(Compressor Discharge Sensor) Temp. (°F) Resistance (kΩ) Temp. (°F) Resistance( kΩ) Temp. (°F) Resistance (kΩ) Temp. (°F) Resistance (kΩ) -20.2 853.5 120.2 18.34 190.4 4.754 -18.4 799.8 51.8 93.42 17.65 192.2 4.609 -16.6 53.6 89.07 123.8...

  • Page 100: Friedrich Authorized Parts Depots

    APPENDIX Friedrich Authorized Parts Depots United Products Distributors Inc. The Gabbert Company Reeve Air Conditioning, Inc. 4030A Benson Ave 2501 South Park Road 6868 Ardmore Hallandale, Florida 33009 Halethorpe, MD 21227 Houston, Texas 77054 888-907-9675 954-962-0252 c.businsky@updinc.com 713-747-4110 800-962-3383 800-458-4110 Shivani Refigeration &...

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