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Service & Parts Manual
2007
Compact Programmable
Models
CP14N10
CP18N30
CP24N30
CP-14-18-24-Svc-Prts-07 (3-07)
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Table of Contents Performance Data ........................................................................................................................................................................ 3 Outer Component Identifi cation ................................................................................................................................................... 4 Installation Dimensions .........................................................................................
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Specifi cations and Technical Parameters Model CP14N10CP18N30CP24N30 Function COOLING COOLING COOLING Rated Voltage 115V ~ 230/208V~ 230/208V~ 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 Rated Current (A) 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 8.6/8.5 Energy Class / / / Fan Type-Piece
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Outer Component Identifi cation Models: CP14N10, CP18N30, CP24N30 Cabinet Air inlet louver Front grille Front intake grille Air filter Power cord (behind front intake grille) Control panel cover 4
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Installation Dimensions Models: CP14N10, CP18N30, CP24N30 (Top View) Fence / obstruction Over 2' Over Over 1' 1' Wall Or window (Front View) (Side View) Ceiling Over 1' 25.98" Over 1' 16.85" Over 2' Less than 8.66" 5
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Wiring Diagrams CP24N30 CP18N30 / CP14N10 6
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Functional Component Defi nitions MECHANICAL COMPONENTS HERMETIC COMPONENTS Vent door Allows introduction of fresh air into the room and/or Compressor Motorized device used to compress refrigerant exhausts stale room air outside (on select models.) through the sealed system. Plenum assembly Diffuser with directional louvers used to direct Check valve A pressure-operated device used to direct the fl ow the conditioned airfl ow. of refrigerant to the proper capillary tube, during either the hea
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Refrigeration System Sequence of Operation A good understanding of the basic operation of the refrigera- In the case of the capillary tube this is accomplished (by design) tion system is essential for the service technician. Without this through size (and length) of device, and the pressure difference understanding, accurate troubleshooting of refrigeration system present across the device. problems will be more diffi cult and time consuming, if not (in some Since the evaporator coil is unde
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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 HERMETIC COMPONENT REPLACEMENT cont’d 1. Voltmeter 6. Pressurize system to 30 PSIG with proper refrigerant and boost refrigerant pressure to 150 PSIG with dry nitrogen. 2. Ammeter 7. Leak test complete system with electric halogen
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Refrigerant Charging NOTE: BECAUSE THE RAC SYSTEM IS A SEALED SYSTEM, METHOD OF CHARGING SERVICE PROCESS TUBES WILL HAVE TO BE INSTALLED. The acceptable method for charging the RAC system is the FIRST INSTALL A LINE TAP AND REMOVE REFRIGERANT Weighed in Charge Method. The weighed in charge method is FROM SYSTEM. MAKE NECESSARY SEALED SYSTEM applicable to all units. It is the preferred method to use, as it is the REPAIRS AND VACUUM SYSTEM. CRIMP PROCESS TUBE most accurate. LINE AND SOLD
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Refrigerant Charging UNDERCHARGED REFRIGERANT SYSTEMS An undercharged system will result in poor performance (low low charge, however, frosting and thawing can also be caused by pressures, etc.) in both the heating and cooling cycle. insuffi cient air over the evaporator. Whenever you service a unit with an under charge of refrigerant, Checks for an undercharged system can be made at the compressor always suspect a leak. The leak must be repaired before charging . If the compressor seems quiete
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Refrigerant Charging RESTRICTED REFRIGERANT SYSTEM A quick check for either condition begins at the evaporator. With Troubleshooting a restricted refrigerant system can be a partial restriction, there may be gurgling sounds at the metering diffi cult. The following proced ures are the more common device entrance to the evaporator. The evaporator in a partial problems and solutions to these problems. There are two restriction could be partially frosted or have an ice ball close to the type
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Cooling Only Room Air Conditioners: Troubleshooting Tips Problem Possible Cause Action Check voltage at compressor. 115V & 230V units Low voltage will operate at 10% voltage variance Set t-stat to coldest position. Test t-stat & replace if T-stat not set cold enough or inoperative inoperative Hard start compressor. Direct test compressor. If Compressor hums but cuts off on B10 overload compressor starts, add starting components Compressor does not run Open or shorted compressor windings Chec
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Cooling Only Room Air Conditioners: Troubleshooting Tips Problem Possible Cause Action Replace fuse, reset breaker. If repeats, check fuse Fuse blown or circuit tripped or breaker size. Check for shorts in unit wiring & components Power cord not plugged in Plug it in Unit does not run 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 Check wiring & connections. Reconnect pe
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Cooling Only Room Air Conditioners: Troubleshooting Tips Problem Possible Cause Action Check operation of unit. Replace overload if system Overload inoperative. Opens too soon operation is satisfactory Allow a minimum of 2 minutes to allow pressures Compressor restarted before system pressures to equalize before attempting to restart. Instruct equalized customer of waiting period Check voltage with unit operating. Check for other appliances on circuit. Air conditioner should Low or fl uctua
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Cooling Only Room Air Conditioners: Troubleshooting Tips Problem Possible Cause Action Ensure that foam gaskets are installed in between Sublimation: When window panes & in between the unit & the sleeve. unconditioned saturated, outside air mixes with Also, ensure that fresh air/exhaust vents (on conditioned air, condensation forms on the cooler applicable models) are in the closed position & are surfaces in tact Water "spitting" into room Follow install
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Heat / Cool Room Air Conditioners: Troubleshooting Tips Problem Possible Cause Action Disconnect power to unit. Remove resistor from t- Heat anticipator (resistor) shorted (on applicable stat bulb block. Plus in unit & allow to operate. Feel models) resistor for heat. If not heat, replace resistor Room temperature uneven Wide differential - partial loss of t-stat bulb charge Replace t-stat & check (Heating cycle) Refer to appropriate wiring diagram. Resistor is Incorrect wiring energized du
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Heat / Cool Room Air Conditioners: Troubleshooting Tips Problem Possible Cause Action Incorrect wiring Refer to applicable wiring diagram Defective solenoid coil Check for continuity of coil Unit cools when heat Block condenser coil & switch unit to cooling. Allow is called for Reversing valve fails to shift pressure to build up in system, then switch to heating. If valve fails to shift, replace valve. Inoperative system switch Check for continuity of system switch Problem Possible Cause Acti
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Components Model CP14N10 19
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Model CP14N10 No Description Qty Friedrich Part# Code 1 Supporter Assy 1 67700200 2 Screw ST4.2X13 7 67700154 3 Window locking bracket 2 67700113 4 Screw 4X20 6 67700151 5 Seal strip 1 1 67700128 6 Seal strip 2 1 67700129 7 Curtain Assemby Left and Right 1 67700201 8 Right Curtain 1 67700202 9 Left Curtain 1 67700203 10 Cabinet Assy 1 67700204 11 Screw ST4.2X6.5 6 67700155 12 Screw M4X8 1 67700149 13 Connect cord 1 67700170 14 Screw M4X5 1 67700205 15 Washer 4 1 67700158 16 Screw ST4.2X22 4
