Friedrich PTAC series Service Manual
Ptac series, pd series r410a models
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Also See for PTAC series:
- Service manual (55 pages) ,
- Installation & operation manual (28 pages) ,
- Parts manual (10 pages)
Related Manuals for Friedrich PTAC series
Summary of Contents for Friedrich PTAC series
- Page 1 S e r v i c e M a n u a l – R 4 1 0 A M o d e l s PTAC - PD Series (Electronic Controls) Packaged Terminal Air Conditioners Packaged Terminal Heat Pumps PD-ServMan-E (2-10)
- Page 2 TECHNICAL SUPPORT CONTACT INFORMATION FRIEDRICH AIR CONDITIONING CO. Post Office Box 1540 · San Antonio, Texas 78295-1540 4200 N. Pan Am Expressway · San Antonio, Texas 78218-5212 (210) 357-4400 · 1-800-541-6645 · FAX (210) 357-4490 www.friedrich.com Printed in the U.S.A.
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Page 3: Table Of Contents
Table of Contents Important Safety Information ...........2-4 Capillary Tube Systems/Check Valve ......23 Introduction .................4 Reversing Valve — Description/Operation ....24 Unit Identification ..............5 Testing Coil ..............24 Component Identification ............6 Checking Reversing Valves ........24-25 Chassis Specifications ............7 Reversing Valve Touch Testing Heating/Cooling Cycle ......25 Performance Data ...............8 Procedure For Changing Reversing Valve ....25-26 Electrical Rating Tables ............9... -
Page 4: Important Safety Information
IMPORTANT SAFETY INFORMATION The information contained in this manual is intended for use by a qualified service technician who is familiar with the safety procedures required for installation and repair, and who is equipped with the proper tools and test instruments required to service this product. Installation or repairs made by unqualified persons can result in subjecting the unqualified person making such repairs as well as the persons being served by the equipment to hazards resulting in injury or electrical shock which can be serious or even fatal. - Page 5 PERSONAL INJURY OR DEATH HAZARDS ELECTRICAL HAZARDS: • Unplug and/or disconnect all electrical power to the unit before performing inspections, maintenance, or service. • Make sure to follow proper lockout/tag out procedures. • Always work in the company of a qualified assistant if possible. •...
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Page 6: Introduction
• Make sure to follow all safety precautions and to use proper protective safety aids such as: gloves, safety glasses, clothing etc. • Failure to follow proper safety procedures and/or these warnings can result in serious injury or death. MECHANICAL HAZARDS: •... -
Page 7: Unit Identification
UNIT IDENTIFICATION Model Number Code PD H 07 K 3 S E A Series Engineering Digit PD = P Series Digital PTAC Design Series System E = Cooling with or without electric heat Options H = Heat Pump with S = Standard Auxiliary Heat Nominal Cooling Capacity Nominal Heater Size... -
Page 8: Component Identification
Component Identification Typical Unit Components and Dimensions Wall Sleeve Outdoor Louver Filters Chassis PDXWS Wall Sleeve Dimensions: Return Air Grille 16” H x 42” W x 13 ” D Front Cover Front Cover Dimensions: 16” H x 42” W x 7 ” D Cut-Out Dimensions: 16 ”... -
Page 9: Chassis Specifications
Chassis Specifications PDE Series Air Conditioner with Electric Heat - Chassis Specifications MODEL PDE07K PDE07R PDE09K PDE09R PDE12K PDE12R PDE15K PDE15R PERFORMANCE DATA: 7500/7300 7500 9000/8800 9000 11500/11300 11500 14500/14000 COOLING BTUh 14000 11.6 11.4 11.4 11.0 10.2 10.1 9.42/9.3 DEHUMIDIFICATION (pints/hr) ELECTRICAL DATA: 230/208... - Page 10 EXTENDED PERFORMANCE 230 208V Extended Performance 208-230 Volt Models PDE - EXTENDED COOLING PERFORMANCE OUTDOOR DRY BULB TEMP. (DEGREES F AT 40% R.H.) INDOOR WET BULB TEMP. (DEGREES F AT 80 F D.B.) BTUh 8820 8483 7853 8400 7920 7305 8070 6638 7560...
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Page 11: Electrical Rating Tables
** Based on copper wire, single insulated conductor at 60°C POWER CORD INFORMATION (230/208V MODELS ONLY) All Friedrich 230/208V PTAC units are shipped from the requires resetting the cause of the trip should be identified factory with a Leakage Current Detection Interrupter (LCDI) prior to further use of the PTAC. -
Page 12: Remote Wall Thermostat / Low Voltage Wire Connections
Remote Thermostat *If only one G terminal is present on thermostat connect to All Friedrich PD model PTAC units are factory configured to GL for low fan or to GH for high fan operation. be controlled by either the chassis mounted Smart Center or a 24V single stage remote wall mounted thermostat. -
Page 13: Digital Control Features
FRIEDRICH DIGITAL CONTROL FEATURES The new Friedrich digital PTAC has state of the art features to improve guest comfort, indoor air quality and conserve energy. Through the use of specifically designed control software for the PTAC industry Friedrich has accomplished what other Manufacturer’s have only attempted –... - Page 14 Rotary Compressor efficiency. The Friedrich PTAC features a 24V AC terminal for connection to an auxiliary fan that may be used to transfer air to adjoining rooms. Auxiliary fans can provide conditioning to multiple rooms without the Auxiliary Fan Ready requirement of multiple PTAC units.
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Page 15: Digital Control Operation
DIGITAL CONTROL OPERATION Temperature Display The Friedrich digital PTAC is shipped from the factory to display the “Set Point” (desired room temperature) on the LED readout. Digital Control Panel The unit can be configured to display the room temperature by simultaneously pressing the ‘Cool’ and ‘High Fan’ buttons for three seconds. -
Page 16: Digital Control User Input Configuration
DIGITAL CONTROL USER INPUT CONFIGURATION The adjustable control dip switches are located at the lower left hand portion of the digital Smart Center. The inputs are only visible and accessible with the front cover removed from the PTAC. Dip Switch Setting Heating Range Switches 1 &... -
Page 17: Optional Hand Held Remote Control Operation
Digital Control Diagnostics and Test Mode Diagnostics The Friedrich Smart Center continuously monitors down button for three seconds while in the error code the PTAC unit operation and will store service codes if mode. -
Page 18: Electronic Control Error Code Diagnostics
Diagnostics Test Mode The Friedrich Smart Center continuously monitors For service and diagnostic use only, the built-in the PTAC unit operation and will store service codes if timers and delays on the PTAC may be bypassed certain conditions are witnessed. -
Page 19: Components Testing
COMPONENTS TESTING Capacitor Check with Capacitor Analyzer BLOWER / FAN MOTOR A single phase permanent split capacitor motor is used to drive The capacitor analyzer will show whether the capacitor the evaporator blower and condenser fan. A self-resetting is “open” or “shorted.” It will tell whether the capacitor overload is located inside the motor to protect against high is within its micro farads rating and it will show whether temperature and high amperage conditions. - Page 20 COMPONENTS TESTING (Continued) HEATER ELEMENTS AND LIMIT SWITCHES’ DRAIN PAN VALVE During the cooling mode of operation, condensate which SPECIFICATIONS All heat pumps and electric heat models are equipped collects in the drain pan is picked up by the condenser fan with a heating element and a limit switch (bimetal ther- blade and sprayed onto the condenser coil.
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Page 21: Refrigeration System Sequence Of Operation
REFRIGERATION SEQUENCE OF OPERATION A good understanding of the basic operation of the The refrigerant leaves the condenser Coil through the liquid refrigeration system is essential for the service technician. line as a warm high pressure liquid. It next will pass through Without this understanding, accurate troubleshooting of the refrigerant drier (if so equipped). -
Page 22: Sealed Refrigeration System Repairs
R-410A SEALED REFRIGERATION SYSTEM REPAIRS IMPORTANT SEALED SYSTEM REPAIRS TO COOL-ONLY MODELS REQUIRE THE INSTALLATION OF A LIQUID LINE DRIER. SEALED SYSTEM REPAIRS TO HEAT PUMP MODELS REQUIRE THE INSTALLATION OF A SUCTION LINE DRIER. EQUIPMENT REQUIRED: High Pressure Gauge - (0 - 750 lbs.) 1. -
Page 23: Method Of Charging
Method Of Charging / Repairs CAUTION The acceptable method for charging the RAC system is the Weighed in Charge Method. The weighed in charge method is FREEZE HAZARD applicable to all units. It is the preferred method to use, as it is Proper safety procedures must be followed, the most accurate. -
Page 24: Overcharged Refrigerant Systems
After the unit has run 10 to 15 minutes, check the gauge Improper air flow over the evaporator coil may indicate pressures. Gauges connected to system with an undercharge some of the same symptoms as an over charged system. will have low head pressures and substantially low suction An overcharge can cause the compressor to fail, since it pressures. -
Page 25: Capillary Tube Systems/Check Valve
HERMETIC COMPONENTS CHECK WARNING WARNING BURN HAZARD Proper safety procedures must be followed, CUT/SEVER HAZARD and proper protective clothing must be worn Be careful with the sharp edges and corners. 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 26: Reversing Valve Description/Operation
REVERSING VALVE DESCRIPTION/OPERATION of the system. The pilot section of the valve opens and WARNING closes ports for the small capillary tubes to the main valve to cause it to shift. ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing. NOTE: System operating pressures must be near Failure to follow this warning could result in normal before valve can shift. -
Page 27: Reversing Valve
Touch Test in Heating/Cooling Cycle When sluggish or stuck in the mid-position, part of the discharge gas from the compressor is directed back to the suction side, resulting in excessively high suction pressure. WARNING Should the valve fail to shift from coooling to heating, BURN HAZARD block the air flow through the outdoor coil and allow the Certain unit components operate at... -
Page 28: Compressor Checks
Determine L.R.V. 6. Protect new valve body from heat while brazing with plastic heat sink (Thermo Trap) or wrap valve body with wet Start the compressor with the volt meter attached; then stop rag. the unit. Attempt to restart the compressor within a couple of seconds and immediately read the voltage on the meter. -
Page 29: External Overload
In a single phase PSC compressor motor, the highest WARNING value will be from the start to the run connections (“S” to “R”). The next highest resistance is from the start to the BURN HAZARD common connections (“S” to “C”). The lowest resistance Certain unit components operate at temperatures hot enough to cause burns. -
Page 30: Single Phase Running & Locked Rotor Amperage
COMPRESSOR REPLACEMENT Recommended procedure for compressor After all refrigerant has been recovered, disconnect suction and discharge lines from the compressor and replacement remove compressor. Be certain to have both suction and discharge process tubes open to atmosphere. WARNING Carefully pour a small amount of oil from the suction RISK OF ELECTRIC SHOCK Unplug and/or disconnect all electrical power stub of the defective compressor into a clean... -
Page 31: Routine Maintenance
To ensure proper unit operation and life expectancy, the SPECIAL PROCEDURE IN THE CASE OF MOTOR following maintenance procedures should be performed COMPRESSOR BURNOUT on a regular basis WARNING 1. Air Filter To ensure proper unit operation, the air filters should ELECTRIC SHOCK HAZARD Turn off electric power before service or be cleaned at least monthly, and more frequently if... -
Page 32: Troubleshooting Charts
TROUBLESHOOTING CHART - COOLING REFRIGERANT SYSTEM DIAGNOSIS COOLING PROBLEM PROBLEM PROBLEM PROBLEM LOW SUCTION PRESSURE HIGH SUCTION PRESSURE LOW HEAD PRESSURE HIGH HEAD PRESSURE Low Load Conditions High Load Conditions Low Load Conditions High Load Conditions Low Air Flow Across High Air Flow Across Refrigerant System Low Air Flow Across... -
Page 33: Troubleshooting Charts
ELECTRICAL TROUBLESHOOTING CHART - HEAT PUMP CAUTION WARNING BURN HAZARD ELECTRIC SHOCK HAZARD Turn off electric power before service or Certain unit components operate at installation. temperatures hot enough to cause burns. Extreme care must be used, if it becomes Proper safety procedures must be followed, necessary to work on equipment with power and proper protective clothing must be... -
Page 34: Wiring Diagram Index
WIRING DIAGRAM INDEX Model Wiring Diagram Page Model Wiring Diagram Page PDE07 PDH07 PDE07K2SE-A 921-401-00 PDH07K2SE-A 921-402-00 PDE07K3SE-A 921-401-00 PDH07K3SE-A 921-402-00 PDE07R2SE-A 921-401-00 PDH07R2SE-A 921-402-00 PDE07R3SE-A 921-401-00 PDH07R3SE-A 921-402-00 PDE09 PDH09 921-401-00 921-402-00 PDE09K0SE-A PDH09K2SE-A PDE09K2SE-A 921-401-00 PDH09K3SE-A 921-402-00 PDE09K3SE-A 921-401-00 PDH09R2SE-A 921-402-00... -
Page 35: Wiring Diagrams For Cool With Electric Heat
WIRING DIAGRAM COOL WITH ELECTRIC HEAT... -
Page 36: Wiring Diagrams For Heat Pump With Electric Heat
WIRING DIAGRAM HEAT PUMP WITH ELECTRIC HEAT... -
Page 37: Remote Thermostat Wiring Diagram
REMOTE THERMOSTAT WIRING DIAGRAM... -
Page 38: Technical Service Data
TECHNICAL SERVICE DATA INDOOR COIL ELECTRICAL OPERATING Refrigerant TEMPERATURE OUTDOOR COIL Discharge Line Suction Line SERVICE DATA RATINGS Super Heat Sub-Cooling PRESSURES Charge º F TEMPERATURE Temperature Temperature Cooling¹ º F º F º F º F º F Temperature Voltage Amps Supply Air... - Page 39 TECHNICAL SUPPORT CONTACT INFORMATION FRIEDRICH AIR CONDITIONING CO. Post Office Box 1540 · San Antonio, Texas 78295-1540 4200 N. Pan Am Expressway · San Antonio, Texas 78218-5212 (210) 357-4400 · 1-800-541-6645 · FAX (210) 357-4490 www.friedrich.com Printed in the U.S.A.
- Page 40 FRIEDRICH AIR CONDITIONING CO. Post Office Box 1540 · San Antonio, Texas 78295-1540 4200 N. Pan Am Expressway · San Antonio, Texas 78218-5212 (210) 357-4400 · FAX (210) 357-4490 www.friedrich.com Printed in the U.S.A. PD-ServMan-E (1-10)