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
22 PB
OPERATION
Function and Control
Advanced Settings Example
Setting target: d0(C), d1(r), d2(30°C), d3(18°C), d4(-1°C), 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. Display: ‘C’ (setting d0 has finished)
Step 4: short press [HEAT] key. Display:’d0’
Step 5: short press [+] key. Display:’d1’
Step 6: short press [HEAT] key. Display: ‘P’
Step 7: short press [+] or [-] key. Display: ‘r’ (setting d1 has finished)
Step 8: short press [HEAT] key. Display:’d1’
Step 9: short press [+] key. Display:’d2’
Step10: short press [HEAT] key. Display:’32’
Step11: short press [-] key twice. Display:’30’ (setting d2 has finished)
Step12: short press [HEAT] key. Display:’d2’
Step13: short press [+] key. Display:’d3’
Step14: short press [HEAT] key. Display:’16’
Step15: short press [+] key twice. Display:’18’ (setting d3 has finished)
Setp16: short press [HEAT] key. Display:’d3’
Step17: short press [+] key. Display:’d4’
Setp18: short press [HEAT] key. Display:’0’
Memory Function
The unit will run the same status from the last moment before power down.
FD Control (front-desk control) & 24V REMOTE THERMOSTAT
The unit can be turned ON/OFF by front desk control switch. The control terminal is located on the remote thermostat
interface, FD.