Service & Parts Manual 2007 Compact Programmable Models CP14N10 CP18N30 CP24N30 CP-14-18-24-Svc-Prts-07 (3-07)
Table of Contents Performance Data ........................................................................................................................................................................ 3 Outer Component Identification ................................................................................................................................................... 4 Installation Dimensions .....................................................................................................
Specifications and Technical Parameters Model CP14N10 CP18N30 Function COOLING COOLING COOLING 115V ~ 230/208V~ 230/208V~ Rated Voltage CP24N30 Rated Frequency 60Hz 60Hz 60Hz Total Capacity (Btu/h) 14000 18000/17600 23500/23100 Power Input (W) 1430 1850/1810 2740/2710 Rated Input (W) 1540 2478 3538 15 12.57 18.09 Air Flow Volume (CFM) (H) 458.8 458.8 617.6 Dehumidifying Volume (pints/h) 3.38 4.65 8.46 EER / C.O.P BTU/W.H) 9.8 9.7/9.7 8.6/8.
Outer Component Identification Models: CP14N10, CP18N30, CP24N30 Cabinet Air inlet louver Front grille Front intake grille Air filter (behind front intake grille) Power cord Control panel cover 4
Installation Dimensions Models: CP14N10, CP18N30, CP24N30 (Top View) Fence / obstruction Over 2' Over 1' Over 1' Wall Or window (Front View) 25.98" Ceiling (Side View) Over 1' Over 1' 16.85" Over 2' Less than 8.
Wiring Diagrams CP24N30 CP18N30 / CP14N10 6
Functional Component Definitions MECHANICAL COMPONENTS HERMETIC COMPONENTS Vent door Allows introduction of fresh air into the room and/or exhausts stale room air outside (on select models.) Compressor Motorized device used to compress refrigerant through the sealed system. Plenum assembly Diffuser with directional louvers used to direct the conditioned airflow.
Refrigeration System 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. The refrigeration system uses four basic principles (laws) in its operation they are as follows: 1. “Heat always flows from a warmer body to a cooler body.” 2.
Sealed Refrigeration System Repairs IMPORTANT ANY SEALED SYSTEM REPAIRS TO COOL-ONLY MODELS REQUIRE THE INSTALLATION OF A LIQUID LINE DRIER. ALSO, ANY SEALED SYSTEM REPAIRS TO HEAT PUMP MODELS REQUIRE THE INSTALLATION OF A SUCTION LINE DRIER. EQUIPMENT REQUIRED 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Voltmeter Ammeter Ohmmeter E.P.A. Approved Refrigerant Recovery System. Vacuum Pump (capable of 200 microns or less vacuum.) Acetylene Welder Electronic Halogen Leak Detector (G.E. Type H-6 or equivalent.
Refrigerant Charging NOTE: BECAUSE THE RAC SYSTEM IS A SEALED SYSTEM, SERVICE PROCESS TUBES WILL HAVE TO BE INSTALLED. FIRST INSTALL A LINE TAP AND REMOVE REFRIGERANT FROM SYSTEM. MAKE NECESSARY SEALED SYSTEM REPAIRS AND VACUUM SYSTEM. CRIMP PROCESS TUBE LINE AND SOLDER END SHUT. DO NOT LEAVE A SERVICE VALVE IN THE SEALED SYSTEM. Proper refrigerant charge is essential to proper unit operation.
Refrigerant Charging UNDERCHARGED REFRIGERANT SYSTEMS An undercharged system will result in poor performance (low pressures, etc.) in both the heating and cooling cycle. low charge, however, frosting and thawing can also be caused by insufficient air over the evaporator. Whenever you service a unit with an undercharge of refrigerant, always suspect a leak. The leak must be repaired before charging the unit. Checks for an undercharged system can be made at the compressor .
Refrigerant Charging RESTRICTED REFRIGERANT SYSTEM A quick check for either condition begins at the evaporator. With a partial restriction, there may be gurgling sounds at the metering device entrance to the evaporator. The evaporator in a partial restriction could be partially frosted or have an ice ball close to the entrance of the metering device. Frost may continue on the suction line back to the compressor.
Cooling Only Room Air Conditioners: Troubleshooting Tips Problem Compressor does not run Possible Cause Low voltage Check voltage at compressor. 115V & 230V units will operate at 10% voltage variance T-stat not set cold enough or inoperative Set t-stat to coldest position. Test t-stat & replace if inoperative Compressor hums but cuts off on B10 overload Hard start compressor. Direct test compressor.
Cooling Only Room Air Conditioners: Troubleshooting Tips Problem Unit does not run Possible Cause Fuse blown or circuit tripped Replace fuse, reset breaker. If repeats, check fuse or breaker size. Check for shorts in unit wiring & components Power cord not plugged in Plug it in System switch in "OFF" position Set switch correctly Inoperative system switch Test for continuity in each switch position Loose or disconnected wiring at switch or other components Check wiring & connections.
Cooling Only Room Air Conditioners: Troubleshooting Tips Problem Compressor runs for short periods only. Cycles on overload Possible Cause Overload inoperative. Opens too soon Check operation of unit. Replace overload if system operation is satisfactory Compressor restarted before system pressures equalized Allow a minimum of 2 minutes to allow pressures to equalize before attempting to restart. Instruct customer of waiting period Low or fluctuating voltage Check voltage with unit operating.
Cooling Only Room Air Conditioners: Troubleshooting Tips Problem Possible Cause Sublimation: When unconditioned saturated, outside air mixes with conditioned air, condensation forms on the cooler surfaces Ensure that foam gaskets are installed in between window panes & in between the unit & the sleeve.
Heat / Cool Room Air Conditioners: Troubleshooting Tips Problem Room temperature uneven (Heating cycle) Possible Cause Action Heat anticipator (resistor) shorted (on applicable models) Disconnect power to unit. Remove resistor from tstat bulb block. Plus in unit & allow to operate. Feel resistor for heat. If not heat, replace resistor Wide differential - partial loss of t-stat bulb charge Replace t-stat & check Incorrect wiring Refer to appropriate wiring diagram.
Heat / Cool Room Air Conditioners: Troubleshooting Tips Problem Unit cools when heat is called for Problem Cooling adequate, but heating insufficient 18 Possible Cause Action Incorrect wiring Refer to applicable wiring diagram Defective solenoid coil Check for continuity of coil Reversing valve fails to shift Block condenser coil & switch unit to cooling. Allow pressure to build up in system, then switch to heating. If valve fails to shift, replace valve.
Components Model CP14N10 19
Model CP14N10 No Description 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 20 Supporter Assy Screw ST4.2X13 Window locking bracket Screw 4X20 Seal strip 1 Seal strip 2 Curtain Assemby Left and Right Right Curtain Left Curtain Cabinet Assy Screw ST4.2X6.5 Screw M4X8 Connect cord Screw M4X5 Washer 4 Screw ST4.
Model CP14N10 No Description 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 Clapboard of Snail Shell Base Plate of Air Flue Evaporator Assy Sensor Holder Compressor 44B124HXCEF Overload Protector Compressor Gasket Nut with washer M8 Capillary Assy Water Tray Capacitor 15uF/300VAC Capacitor 50uF/450V Relay 841-S-1A-D 110/120V Transformer 41X26.
Models CP18C30 & CP18N30 No Description 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 22 Supporter Assy Self-threading Screw ST4.2x22 Window Locking Bracket Screw 4X20 Seal Strip 1 Seal Strip 2 Curtain Assemby Left and Right Right Curtain Left Curtain Cabinet Assy Self-threading Screw ST4.2X6.5 Screw Assay M4x8 Connect Cord Screw M4X6 Washer 4 Self-threading Screw ST4.
Models CP18C30 & CP18N30 No Description 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 Blower Wheel Front Clapboard of Snail Shell Base Plate of Air Flue Evaporator Assy Insert Block Compressor 2K25S236AHF Overload Protector Compressor Gasket AD7070815 Nut with Washer M8 Capillary Assay Water Tray Capacitor 7uF/450V Capacitor CBB65 40uF/450V(TUV) Relay 841-S-1A-D 200V/240V TUV Power Transformer 41X26.
Components Model CP24N30 24
Model CP24N30 No Description 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 Supporter Assy Screw ST4.2X13 Window locking bracket Screw 4X20 Seal strip 1 Seal strip 2 LT & RT Curtain Assembly Right Curtain Left Curtain Cabinet Assy Screw ST4.2X6.5 Screw M4X8 Connect cord Screw M4X5 Washer 4 Screw ST4.
Model CP24N30 No Description 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 26 Base Plate of Air Flue Evaporator Assy Sensor Holder Compressor 44B124HXCEF Overload Protector Compressor Gasket Nut with washer M8 Capillary Assy Water Tray Capacitor 15uF/300VAC Capacitor 50uF/450V Relay 841-S-1A-D 110/120V Transformer 41X26.
Friedrich Air Conditioning Company P.O. Box 1540 San Antonio, TX 78295 210.357.4400 www.friedrich.com ROOM AIR CONDITIONERS LIMITED WARRANTY FIRST YEAR ANY PART: If any part supplied by FRIEDRICH fails because of a defect in workmanship or material within twelve months from date of original purchase, FRIEDRICH will repair the product at no charge, provided room air conditioner is reasonably accessible for service.
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.