Service and Parts Manual (2016, 2017, 2015)
Table Of Contents
- INTRODUCTION
- Important Safety Information
- Personal Injury Or Death Hazards
- Operation of Equipment in During Construction
- Model Number Reference Guide
- Serial Number Reference Guide
- Product Features
- General Specifications
- 230V COOLING AND HEATING PERFORMANCE
- 265V COOLING AND HEATING PERFORMANCE
- Electric Heat Data
- Dimensions
- Electrical Data
- Function and Control
- Digital Control User Input Configuration
- Digital Control
- 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 Preparation
- Thermostat
- Final Inspection & Start-up Checklist
- Refrigerant Charging
- Undercharged Refrigerant Systems
- Overcharged Refrigerant Systems
- Restricted Refrigerant System
- Sealed System Method of Charging/ Repairs
- Electrical
- 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
- Basic Troubleshooting
- Malfunction Analysis
- Troubleshootin Chart
- Heat Pump
- Remote Wall Thermostat Wiring Diagram
- Cool With Electric Heat
- Heat Pump With Electric Heat
- PZE
- PZH
- Reference Sheet of Celsius and Fahrenheit
- Resistance Table for Air Indoor Temperature Sensor
- Resistance Table for Frost Protection Indoor and Outdoor Temperature Sensors
53 PB
COMPONENT TESTING
Replace The Reversing Valve
WARNING
HIGH PRESSURE HAZARD
Sealed Refrigeration System contains refrigerant
and oil under high pressure.
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with refrigerants.
Failure to follow these procedures could
result in serious injury or death.
NOTICE
FIRE HAZARD
The use of a torch requires extreme care and proper
judgment. Follow all safety recommended precautions and
notice could result in moderate to serious property damage.
1. Install Process Tubes. Recover refrigerant from sealed system. PROPER HANDLING OF RECOVERED
REFRIGERANT ACCORDING TO EPA REGULATIONS IS REQUIRED.
2. Remove solenoid coil from reversing valve. If coil is to be reused, remove solenoid and protect from heat while
changing valve.
3. Unbraze all lines from reversing valve.
4. Clean all excess braze from all tubing so that they will slip into ttings on new valve.
5. Remove solenoid coil from new valve.
6. Protect new valve body from heat while brazing with plastic heat sink (Thermo Trap) or wrap valve body with
wet rag.
7. Fit all lines into new valve and braze lines into new valve.
WARNING
EXPLOSION HAZARD
The use of nitrogen requires a pressure
regulator. Follow all safety procedures and
wear protective safety clothing etc.
Failure to follow proper safety procedures
could result in serious injury or death.
8. Pressurize sealed system with a combination of R-410A and nitrogen. Pressurize system to 550 psi and triple
evacuate. Check for leaks, using a suitable leak detector. Recover refrigerant per EPA guidelines.
9. Once the sealed system is leak free, install solenoid coil on new valve and charge the sealed system by
weighing in the proper amount and type of refrigerant as shown on rating plate. Crimp the process tubes and
solder the ends shut. Do not leave Schrader or piercing valves in the sealed system.
NOTE: When brazing a reversing valve into the system, it is of extreme importance that the temperature of the
valve does not exceed 250°F at any time.
Wrap the reversing valve with a large rag saturated with water. “Re-wet” the rag and thoroughly cool the valve
after each brazing operation of the four joints involved.
The wet rag around the reversing valve will eliminate conduction of heat to the valve body when brazing the line
connection.