Friedrich WallMaster PE07K Service Manual
Packaged terminal air conditioners packaged terminal heat pumps wallmaster p series
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Also See for WallMaster PE07K:
- Parts manual (12 pages) ,
- Product profile (12 pages) ,
- Specifications (12 pages)
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Summary of Contents for Friedrich WallMaster PE07K
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Page 1: Service Manual
Service Manual WallMaster ® Packaged Terminal Air Conditioners Packaged Terminal Heat Pumps · Standard Unit · Seacoast Protected Unit · Remote Thermostat Unit P2K23-DM (4-03) P SERIES... -
Page 2: Table Of Contents
Typical Unit Components ... 4 Introduction... 4 Unit Identification ... 5 Unit Specifications ... 6 PE Series Air Conditioner–Cooling Performance ... 6 PH Series Heat Pump–Heating/Cooling Performance... 6 PE / Ph Series Electric Heating Data ... 6 Sequence Of Operation... 7 Electrical Supply ... -
Page 3: Typical Unit Components
If you install or perform service on equipment, you must assume responsibility for any bodily injury or property damage which may result to you or others. Friedrich Air Conditioning Company will not be responsible for any injury or property damage arising from improper installation, service, and/or service procedures. -
Page 4: Unit Identification
UNIT IDENTIFICATION Series P = P series System X= Accessory E= Cooling with or without electric heat H = Heat Pump with Auxiliary Heat Nominal Cooling Capacity 07 = 7,000 - 7,100 BTUh 09 = 9,000 - 9,100 BTUh 12 = 11,500 - 11,700 BTUh 15 = 14,100 - 14,200 BTUh PTAC Serial Number Identification Guide Serial Number... -
Page 5: Unit Specifications
CURRENT (AMPS) POWER FACTOR AMPS L.R. AMPS F.L. HORSEPOWER R-22 CHARGE (OZ) PERFORMANCE COOLING BTUh REVERSE HEATING BTUh INDOOR CFM SENSIBLE HEAT RATIO VENT CFM ERIES PE07K PE07R PE09K PE09R 230/208 230/208 253-198 292-239 253-198 292-239 615/598 800/783 22.2 1/15. -
Page 6: Sequence Of Operation
Sequence of Operation A good understanding of the basic operation of the refrigeration system is essential for the service technician. Without this understanding, accurate troubleshooting of refrigeration system problems will be more difficult and time consuming, if not (in some cases) entirely impossible. -
Page 7: Electrical Supply
Electrical Rating Tables All 230/208 volt units are equipped with power cords. NOTE: Use Copper Conductors ONLY Wire sizes are per NEC, check local codes for overseas applications Table 1 250 V Receptacles and Fuse Types AMPS RECEPTACLE MANUFACTURER Hubbell 5661 P &... -
Page 8: Standard Unit Operation
Standard Unit Operation Rotate the temperature dial in small increments in the warmer or cooler direction. Moving the dial more than 1/4" at a time may overcompensate and result in an extreme hot or cold situation. Standard Unit Control Panel COOLING ONLY MODEL Temperature Limiting Thermostat Set the thermostat knob to center of dial. -
Page 9: Remote Thermostat Unit Installation
Other manufacturer's PTACs and even older Friedrich models may have different control wire connections. Questions concerning proper connections to the unit should be directed to the factory. -
Page 10: Remote Thermostat Unit Operation
Remote Thermostat 208V Operation 208V 60HZ Remote Thermostat Unit Operation These units are controlled by the use of a remote thermostat that will cycle the unit to maintain desired room temperature. See thermostat operating instruction sheet for details. The fan speed switch controls high and low speed fan operation. -
Page 11: Heat Anticipators
Measuring Current Draw Heat Anticipators Heat anticipators are small resistance heaters (wired in SERIES with the "W" circuit) and built into most electromechanical thermostats. Their purpose is to prevent wide swings in room temperature during system operation in the HEATING mode. Since they are wired in series, the "W"... -
Page 12: Fan Cycle Switch
Fan Cycle Switch NOTE: It is recommended that this switch be set in the continuous position for maximum comfort and temperature control. Hot Start Sensor (Heat Pump Models Only) Under cold room conditions, the Hot Start Sensor brings on the heater strips with a call for heat. This is to dis- tribute warm air at the beginning of the heat cycle. -
Page 13: Undercharged Refrigerant Systems
NOTE: In order to access the sealed system it will be necessary to install Schrader type fittings to the process tubes on the discharge and suction of the compressor. Proper recovery refrigerant procedures need to be adhered to as outlined in EPA Regulations. -
Page 14: Overcharged Refrigerant Systems
Overcharged Refrigerant Systems Compressor amps will be near normal or higher. Noncondensables can also cause these symptoms. To confirm, remove some of the charge, if conditions improve, system may be overcharged. If conditions don’t improve, Noncondensables are indicated. Whenever an overcharged system is indicated, always make sure that the problem is not caused by air flow problems. - Page 15 Restricted Refrigerant System Troubleshooting a restricted refrigerant system can be difficult. The following procedures are the more common problems and solutions to these problems. There are two types of refrigerant restrictions: Partial restrictions and complete restrictions. A partial restriction allows some of the refrigerant to circulate through the system.
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Page 16: Capillary Tube Systems
Metering Device Capillary Tube Systems All units are equipped with capillary tube metering de- vices. Checking for restricted capillary tubes. Connect pressure gauges to unit. Start the unit in the cooling mode. If after a few minutes of operation the pressures are normal, the check valve and the cooling capillary are not restricted. -
Page 17: Restricted Refrigerant Systems
Electrical Circuit and Coil (Reversing valve coil is energized in the heating cycle only). 1. Set controls for heating; valve should shift if there is pressure in the sealed system. 2. REMOTE THERMOSTAT HEAT PUMP UNITS: Check for line voltage at the heat relay, terminal #4 and the reversing valve relay terminal #4. -
Page 18: Compressor Checks
Reversing Valve in Cooling Mode 8. Pressurize sealed system with a combination of R-22 and nitrogen and 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. -
Page 19: Single Phase Resistance Test
Single Phase Resistance Test Remove the leads from the compressor terminals and set the ohmmeter on the lowest scale (R x 1). Touch the leads of the ohmmeter from terminals common to start ("C" to "S"). Next, touch the leads of the ohmmeter from terminals common to run ("C"... -
Page 20: Capacitors
Carefully pour a small amount of oil from the suction stub of the defective compressor into a clean container. Using an acid test kit (one shot or conventional kit), test the oil for acid content according to the instructions with the kit. If any evidence of a burnout is found, no matter how slight, the system will need to be cleaned up following proper procedures. -
Page 21: System Switch Continuity Check
System Switch Continuity Check Remove and label all wires from the system switch. Using an ohmmeter checks for continuity can be made. Continuity reading should be as shown in the table below. Should the switch fail any part of this check it should be replaced. Cooling Only Models... -
Page 22: Fan Cycle Switch Continuity Check
Remove and label all wires from the fan cycle switch. Continuity reading should be as shown in the table below. Should the fan cycle switch fail any part of this check, it should be replaced. Remove and label all wires from the fan speed switch. Continuity reading should be as shown in the table below. Should the fan speed switch fail any part of this check, it should be replaced. -
Page 23: Emergency Heat Switch Continuity Check
Emergency Heat Switch (Defrost Thermostat) Electric Heat Switch Operation ( Heat Pumps Only) The electric heat switch is a dual function control and is shown on the wiring diagram as a defrost thermostat. It may be adjusted using a screwdriver. As the control shaft is rotated counter clockwise a detent will be encountered. Turning the control past the detent will lock out the compressor and acts as an emergency heat switch. -
Page 24: Routine Maintenance
NOTE: Units are to be inspected and serviced by qualified service personnel only. Clean the unit air intake filter at least every 300 to 350 hours of operation. Clean the filters with a mild detergent in warm water and allow to dry thoroughly before reinstalling. The indoor coil (evaporator coil), the outdoor coil (condenser coil) and base pan should be inspected periodically (yearly or bi-yearly) and cleaned of all debris (lint, dirt, leaves, paper, etc.). -
Page 25: Troubleshooting Chart - Cooling
Troubleshooting Chart — Cooling REFRIGERANT SYSTEM DIAGNOSIS COOLING Low Suction Pressure High Suction Pressure Low Load Conditions High Load Conditions Low Air Flow Across High Air Flow Across Indoor Coil Refrigerant System Reversing Valve not Restriction Fully Seated Undercharged Overcharged Moisture in System Defective Compressor Low Head Pressure... -
Page 26: Troubleshooting Chart - Heating
Troubleshooting Chart — Heating REFRIGERANT SYSTEM DIAGNOSIS – HEATING Low Suction Pressure High Suction Pressure Low Head Pressure High Head Pressure Outdoor Ambient Too High Low Airflow Outdoor Ambient Too High Refrigerant System For Operation In Heating for Operation in Heating Across Outdoor Coil Restriction Low Airflow Across... -
Page 27: Electrical Troubleshooting Chart
Electrical Troubleshooting Chart HEAT PUMP HEAT PUMP SYSTEM COOLS WHEN HEATING IS DESIRED. Is Line Voltage Is the Selector Switch Present at the Solenoid Set for Heat? Valve? Is the Solenoid Coil Good? Replace the Solenoid Coil Reversing Valve Stuck Replace the Reversing Valve... -
Page 28: Wiring Diagrams
Wiring Diagram PTAC Models PE ( 07, 09, 12, 15 ) KOOSA-1 Wiring Diagram PTAC Models PH ( 07, 09, 12, 15 ) K (2, 3, 5 ) SA-1... - Page 29 Wiring Diagram PTAC Models PH ( 07, 09, 12, 15 ) KOOSA-1 Wiring Diagram PTAC Models PE ( 07, 09, 12, 15 ) K ( 2, 3, 5 ) SA-1...
- Page 30 Wiring Diagram PTAC Models PH ( 07, 09, 12, 15 ) K ( 2, 3, 5 ) RA-1 Wiring Diagram PTAC Models PE ( 07, 09, 12, 15 ) K ( 2, 3, 5 ) RA-1...
- Page 31 Wiring Diagram PTAC Models PE ( 07, 09, 12, 15 ) KOORA-1 Wiring Diagram PTAC Models PE ( 07, 09, 12, 15 ) R00SA-1...
- Page 32 Wiring Diagram PTAC Models PE ( 07, 09, 12, 15 ) R ( 2, 3, 5 ) SA-1 Wiring Diagram PTAC Models PH ( 07, 09, 12, 15 ) R ( 2, 3, 5 ) SA-1...
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Page 33: Wiring Diagrams
Wiring Diagram PTAC Models PE ( 07, 09, 12, 15 ) R ( 2, 3, 5 ) RA-1 Wiring Diagram PTAC Models PH ( 07, 09, 12, 15 ) R ( 2, 3, 5 ) RA-1... - Page 34 Wiring Diagram PTAC Models PE (07, 09, 12, 15) K005 S-1 WIRING DIAGRAM PTAC MODELS CONTACTS MADE NONE HI COOL L1 TO 2, 3 TO COMP, 4 TO H, COM TO L2 FAN ONLY 1 TO H COM TO L2 LOW COOL L1 TO 2, 3 TO COMP, L TO 4, COM TO L2...
- Page 35 Wiring Diagram PTAC Models PE (07, 09, 12, 15) K (2, 3, 5) SB-1 WIRING DIAGRAM PTAC MODELS CONTACTS MADE MOTOR NONE LOW COOL L1 TO 2, 5 TO 3, 4 TO 6 L TO 9, COM TO L2 HI COOL L1 TO 2, 5 TO 3, 4 TO 6 H TO 9, COM TO L2 FAN ONLY...
- Page 36 Wiring Diagram PTAC Models PE (07, 09, 12, 15) R00RB-1 WIRING DIAGRAM PTAC MODELS MOTOR OPTIONAL FIELD DESK CONTROL WIRING DESK CONTROL RELAY (Existing) WHITE WIRE (COM) White Line (SUPPLIED) (Supplied) BLACK WIRE Black Line (Existing) (277V) To Fuse To Unit Terminal Transformer WIRING HARNESS &...
- Page 37 Wiring Diagram PTAC Models PE (07, 09, 12, 15) K00RB-1 WIRING DIAGRAM PTAC MODELS MOTOR OPTIONAL FIELD DESK CONTROL WIRING DESK CONTROL RELAY POWER CORD WHITE WIRE (COM) SMOOTH WIRE (SUPPLIED) BLACK WIRE RIBBED WIRE (230V) (SUPPLIED) To Unit Transformer WIRING HARNESS &...
- Page 38 Wiring Diagram PTAC Models PE (07, 09, 12, 15) R (2, 3, 5) SB-1 WIRING DIAGRAM PTAC MODELS CONTACTS MADE MOTOR NONE LOW COOL L1 TO 2, 5 TO 3, 4 TO 6 L TO 9, COM TO L2 HI COOL L1 TO 2, 5 TO 3, 4 TO 6 H TO 9, COM TO L2 FAN ONLY...
- Page 39 Wiring Diagram PTAC Models PH (07, 09, 12, 15) R (2, 3, 5) RB-1 WIRING DIAGRAM PTAC MODELS MOTOR OPTIONAL FIELD DESK CONTROL WIRING FAN SPEED DESK CONTROL RELAY SWITCH (Existing) WHITE WIRE (COM) White Line (SUPPLIED) (Supplied) BLACK WIRE Black Line (Existing) (277V)
- 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) 357-4480 www.friedrich.com Printed in the U.S.A. P2K23-DM (4-03)