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
43 PB
INSTALLATION
Remote Control Thermostat Installation
26
Remote Control Thermostat
Installation
Install Thermostat
1. Approximately 5 ft from the floor.
2. Close to or in a frequently used room,preferably on an inside wall.
3. On a section of wall without pipes or ductwork.
The Thermostat should NOT be mounted:
1. Close to a window, on an outside wall, or next to a door leading
outside.
2. Where it can be exposed to direct sunlight or heat, such as the sun,
a lamp,fireplace or any other temperature radiating object which
may cause a false reading.
3. Close to or in the direct airflow of supply registers and/or return
air grilles.
4. Any areas with poor air circulation,such as a corner,behind a
door,or an alcove.
Remote Thermostat and
Low Voltage Control
Connections
RemoteThermostat
All Friedrich PV model PTAC units are factory configured to be controlled
by either the chassis mounted Smart Center or a 24V remote wall mounted
thermostat.The thermostat may be auto or manual changeover as long as
the control configuration matches that of the PTAC unit.
NOTE: All PV models require a single stage cool, dual stage heat
thermostat with an B reversing valve control.The Friedrich RT6
thermostat can be configured for either model.
To control the unit with a wall mounted thermostat
follow the steps below:
1. Unplug the unit before doing any work
2. Remove the low voltage terminal block from the unit.
3. Connect the corresponding terminals from the wall thermostat to
the terminal block
4. Plug the terminal block on the unitk.
5. Restore power to the unit.
6.
Under OFF mode, set menu NO.'d1' to “r”, details refer to the
previous section "Settings- Detailed Configurations" on page 25.
7. The unit is now controlled by the wall thermostat only.
8.
If the accessory escutcheon kit (PDXRTA) is to be used, install
it over the existing control panel.
NOTE:The unit control panel no longer controls the unit. To restore the control
panel, set menu NO.'d1' back to "P", details refer to the previous section "Settings-
Detailed Configurations" on page 2 .
Thermostat Connections
R = 24V Power from Unit
Y = Call for Cooling
W = Call for Heating
B = Reversing Valve Energized in Heating Mode
GL = Call for Low Fan
GH = Call for High Fan
C = Common Ground
*If only one G terminal is present on thermostat connect to GL for low
speed fan or to GH for high speed fan operation.
Figure 30
Control board with optional PDXRTB escutcheon kit
installed
FRP030