Service and Parts Manual (2018, 2019, 2020, 2021, 2022)
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
- General Specifications 9-12k Heat Pump Models
- Electrical Data
- Function and Control
- Buttons and Display
- Temperature Definition
- System Basic Function
- 1) Cooling Mode
- 2) Heating Mode
- 3) Room Freeze Protection (AUTO HEATING)
- 4) Temperature Sensor Open Circuit or Short Circuit Protection
- 5) Power cut protection
- 6) Compressor and DC-inverter features
- 7) Smart fresh air system
- Advanced Functions
- Advanced Settings
- Memory Function
- FD Control (front-desk control) & 24V REMOTE THERMOSTAT
- Protection Functions
- System Configuration Fresh Air Vent Control
- Digital Control User Input Configuration
- Settings- Detailed Configurations
- Refrigeration Sequence Of Operation
- Refrigerant System Diagram
- PTAC Installation Recommendations
- Wall Sleeve Installation Instructions (PDXWS)
- Alternate Wall Installations
- PXDR10 Drain Kit Installation
- External Drain
- PXGA Standard Grille
- Chassis Install
- Remote Control Thermostat Installation
- Front Desk Control Terminal
- Final Inspection & Start-up Checklist
- Remove Chassis
- Remove User Interface
- Open Electrical Control Box
- Remove Main PCB (logic) Board
- Remove Power Cord
- Remove Power PCB
- Remove IPM PCB (Inverter Board)
- Remove Blower Wheel (Inside Fan)
- Remove Blower Wheel Motor (Inside Fan)
- Remove Heating Element
- Remove Freshaire Components
- Remove Outdoor Fan
- Remove Reversing valve Solenoid
- Refrigerant Charging
- Undercharged Refrigerant Systems
- Overcharged Refrigerant Systems
- Restricted Refrigerant System
- Sealed System Method of Charging/ Repairs
- Hermetic Components Check
- Reversing Valve Description And Operation
- Testing The Reversing Valve Solenoid Coil
- Checking The Reversing Valve
- Touch Test Chart : To Service Reversing Valves
- Compressor Checks
- Compressor Replacement
- Compressor Replacement -Special Procedure in Case of Compressor Burnout
- Check Indoor Fan Motor
- Check Outdoor Fan Motor
- Check Fan Motor Capacitors
- Main PCB (logic) Board Connector Identification
- Power PCB (Power Board) Connector Identification
- Basic Troubleshooting
- Error code and solutions
- Unit Does Not Operate
- Check Electric Heater Control
- Check Thermistors
- Check Thermistors -Resistance Table of Thermistors (5K)
- Check Thermistors -Resistance Table of Thermistors (50K)(Compressor Discharge Sensor)
- PARTS CATALOG
107 PB
ACCESSORIES
31
New Construction Accessories
PDXDAA
LATERAL DUCT ADAPTER Attaches to the Friedrich PTAC/PTHP unit to direct
up to 35% of the total airow 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. The air may be directed to either the left or the right of
the unit through the supplied 3.5 H" x 7 W" x 47" L plenum. Plenum may be cut
to length by the installer. Kit includes duct plenum, front grille, 47" duct extension,
duct discharge grille, duct end cap and all necessary mounting hardware.
PDXDEA
LATERAL DUCT EXTENSION Additional 3.5 H" x 7" W x 47" L plenum for use
with the LATERAL DUCT ADAPTER. A maximum of 3 duct extensions total may
be used. Note: Ducted airow is reduced as duct length is increased.
PXFTA
REPLACEMENT FILTER PACK These are original equipment return air lters.
They are reusable and can be cleaned by vacuuming, washing, or blowing out,
and are sold in convenient ten-packs. (Two lters per chassis).
PXDR10
CONDENSATE DRAIN KIT Attaches to the bottom of the wall sleeve for internal
draining of condensate or to the rear wall sleeve ange for external draining.
Recommended on all units to remove excess condensate.
Packaged in quantities of ten.
RT7
DIGITAL REMOTE WALL THERMOSTAT Single stage cool, single stage heat
for PDE models or single stage cool, dual stage heat for 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 conguration
modes. For use on PD-series Friedrich PTACs and Vert-I-Paks.
WRT2
DIGITAL THERMOSTAT Wireless, single stage, wall-mounted digital thermostat
with two fan speeds. Features backlit display and multiple conguration modes.
PDXRTA
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. The escutcheon directs the guest to the wall thermostat for
operation and retains the LED window to display error codes and diagnostic
information.
FRIEDRICHLINK® ENERGY MANAGEMENT THERMOSTAT Integrated oc-
cupancy sensor uses a combination of motion and thermal sensing technologies
for accurate occupancy detection. Reliable occupancy detection allows saving en-
ergy when rooms are unoccupied. Energy saving presets eliminate the guesswork
and make it easy to adjust the energy saving settings.
EMWRT2 Wireless thermostat with occupancy sensor.
EMRT2 Wired thermostat with occupancy sensor.
RT7P










