Whirlpool ATE0743RPP Technical Manual Download Page 78

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7-12

(#7) COMPRESSOR HEATING—HOT START SENSOR OPEN—
ROOM ABOVE 65

F (HEAT PUMP MODELS)

SYSTEM

SWITCH

REV. VALVE SOLENOID

DEFROST

THERM.

COM

SYSTEM SWITCH

COMPRESSOR

OVERLOAD

SYSTEM

SWITCH

ANTICIPATOR

HOT START

RELAY

FUSE
(265V
MODELS
ONLY)

MAIN

THERMOSTAT

(#9) ELECTRIC HEAT—HOT START SENSOR CLOSED—ROOM BELOW 50

(HEAT PUMP MODELS)

SYSTEM

SWITCH

HEAT

LIMIT SW

HEATING

ELEMENT

COM

SYSTEM SWITCH

SYSTEM

SWITCH

SYSTEM

SWITCH

SYSTEM SWITCH

HOT START

RELAY

HOT START

RELAY COIL

HOT START

SENSOR

ANTICIPATOR

FUSE
(265V
MODELS
ONLY)

MAIN

THERMOSTAT

REV. VALVE SOLENOID

(#8) ELECTRIC HEAT—HOT START SENSOR OPEN—ROOM ABOVE 65

AND OUTDOOR AMBIENT BELOW 47

F (HEAT PUMP MODELS)

SYSTEM

SWITCH

DEFROST

THERM.

COM

SYSTEM SWITCH

SYSTEM

SWITCH

ANTICIPATOR

HOT START

RELAY

FUSE
(265V
MODELS
ONLY)

MAIN

THERMOSTAT

HEAT

LIMIT SW

HEATING

ELEMENT

SYSTEM

SWITCH

REV. VALVE SOLENOID

Summary of Contents for ATE0743RPP

Page 1: ...PACKAGED TERMINAL AIR CONDITIONERS Models ATE0743SPP ATE0943SPP ATE1243SPP ATE1545SPP ATR0743SPP ATR0943SPP ATR1243SPP ATR1545SPP ATE0953SPP ATE1253SPP ATE1555SPP ATR0953SPP ATR1253SPP ATR1555SPP ATE0743RPP ATE0943RPP ATE1243RPP ATE1545RPP ATR0743RPP ATR0943RPP ATR1243RPP ATR1545RPP ...

Page 2: ...r conditioner The Wiring Diagrams and Strip Circuits used in this Job Aid are typical and should be used for training purposes only Always use the Wiring Diagram supplied with the product when servicing the unit GOALS AND OBJECTIVES The goal of this Job Aid is to provide detailed information that will enable the service technician to properly diagnose malfunctions and repair the Packaged Terminal ...

Page 3: ...rsing Valve Operation 3 4 Remote Thermostat Operation 3 5 Heat Pump Function 3 7 Operating The Controls 3 8 COMPONENT ACCESS 4 1 Component Locations 4 1 Removing The Indoor Thermostat Mode System Switch And Heat Anticipator 4 2 Removing The Power Supply Cord 4 4 Removing The Defrost Thermostat 4 5 Removing The Hot Start Relay And Hot Start Sensor 4 6 Removing The Capacitor Fan Cycle Switch 4 7 Rem...

Page 4: ...h Remote Control Unit Fan Switch 5 5 Heater Limit Switch 5 6 Fan Motor 5 6 Overload Protector 5 7 Compressor 5 7 Solenoid Coil 5 8 DIAGNOSIS TROUBLESHOOTING 6 1 Diagnosing The Sealed System 6 1 Troubleshooting Charts 6 7 WIRING DIAGRAMS STRIP CIRCUITS 7 1 Wiring Diagrams 7 5 Strip Circuits 7 10 TECH TIPS 8 1 Routine Maintenance 8 1 Accessories 8 2 Optional Desk Control Unit 8 4 General Troubleshoo...

Page 5: ...TRICAL CODE 4 208V 230V 1 PHASE 60 HZ 5 265V 1 PHASE 60 HZ HEATER 2 2 5 KW 3 3 4 KW 5 5 0 KW FEATURE CODE OPTIONS S STANDARD ELECTROMECHANICAL R REMOTE WALL MOUNTED THERMOSTAT C SEACOAST PROTECTION STD CONTROLS B REMOTE THERMOSTAT SEACOAST PROTECTION MANUFACTURING LOCATION P PURCHASED PRODUCT YEAR OF INTRODUCTION M 2003 P 2004 R 2005 S 2006 T 2007 ENGINEERING CHANGE 0 1 2 ETC SERIAL NUMBER QR P 05...

Page 6: ...1 2 MODEL SERIAL NUMBER LABEL WIRING DIAGRAM LOCATIONS The Model Serial Number label and Wiring Diagram locations are shown below Model Serial Number Location Wiring Diagram Location Front Cover Removed ...

Page 7: ...743SPP Standard 7200 7000 11600 230 3 4 12 1 20 6 20 20 Amp 2 1 250 3 3 ATR0943SPP Standard 9100 9000 11600 230 3 4 10 5 20 6 20 20 Amp 2 1 250 3 3 ATR1243SPP Standard 12000 12000 11600 230 3 4 10 5 20 6 20 20 Amp 2 1 250 3 3 ATR1545SPP Standard 15000 14700 17000 230 5 0 9 3 30 6 30 30 Amp 5 5 350 2 8 ATR0953SPP Standard 9100 9000 11600 265 3 4 11 3 20 6 20 20 Amp 3 8 325 3 1 ATR1253SPP Standard 1...

Page 8: ...THP WARRANTY LENGTH OF WARRANTY ONE YEAR FULL WARRANTY FIVE YEAR FULL WARRANTY SECOND THROUGH FIFTH YEAR LIMITED WARRANTY WHIRLPOOL WILL NOT PAY FOR 1 Service calls to correct the installation of the PTAC PTHP instruct you how to use the PTAC PTHP to replace fuses correct wiring reset circuit breakers or to clean or replace owner accessible air filters 2 Damage resulting from accident alteration m...

Page 9: ...R 6 30R The field supplied outlet must match plug on service cord and be within reach of service cord 265 VOLT PTAC PTHP All 265 volt PTAC PTHPs are equipped with pigtail leads for field wiring IMPORTANT Use copper conductors only Wire sizes are per NEC Use on individual branch circuit only Use overcurrent protection indicated on PTAC PTHP s rating plate PTAC PTHP must be grounded to branch circui...

Page 10: ...located inside the room will allow condensate to drain to a field drain located inside the room Drain kit located inside the wall cavity will allow condensate to drain to a field drain located inside the wall cavity External Drain Drain kit located outside will allow conden sate to drain to a field drain located outside or to drain away from the wall sleeve When using an external drain system sele...

Page 11: ...inst the wall sleeve 3 Position the assembly beneath the drilled holes and secure it with 10 24 x 1 2 machine screws and locknuts provided Seal the tops of the screws with silicone sealant 4 Connect the drain tube to the drain system in the building IMPORTANT Follow all local building codes when making this connection 5 Attachthe2coverplatesandgasketsover the drain holes at the rear of the wall sl...

Page 12: ...o a horizontal position to allow for the wall sleeve to be installed into the wall Once the wall sleeve is installed positionthedraintubetothedesiredangle Before tightening the screws check to be sure the tube s position will allow the wall sleevetofitthroughthewall Tightenscrews 4 Using 2 10 x 1 2 sheet metal screws provided attach the cover plate to the remaining drain hole Check that the large ...

Page 13: ...ll be installed IMPORTANT Copper refrigerant tubes are not handles Product damage will occur if tubes are used to lift or move the chassis 1 Remove banding and carton 2 Remove the 2 chassis shipping brackets from the ends of the shipping pallet Excessive Weight Hazard Use two or more people to move and install PTAC PTHP Failuretodosocanresultinbackorother injury 3 Remove the front cover which is c...

Page 14: ...stewater codes In Canada field wiring must conform to the Canadian electrical code PART I CSA STANDARD C22 1 1993 or cur rent edition Local authorities having jurisdic tion should be consulted before installation is made Such applicable regulations or require ments take precedence over the general in structions in this Job Aid INSTALL THE CHASSIS 1 Disconnect power 2 Center the chassis in the inst...

Page 15: ...k Field wiring connections for direct wired mod els can be done in one of 2 ways Using field supplied conduit and wires Using the Conduit with Junction Box Kit accessory FIELD WIRING CONNECTIONS 1 Disconnect power 2 Remove the PTAC PTHP front cover us ing the thumbscrews 3 Route the incoming power supply through suitable conduit to the PTAC PTHP con trol box 4 Remove the 4 screws holding the contr...

Page 16: ... wire Connect the white wire to the incoming neutral white wire Connect the green wire to the incoming ground green or bare wire 1 Field supplied conduit 2 Control box 2 1 1 Black wire 2 Incoming L1 wire black wire 3 Green wire 4 Ground wire green or bare wire 5 White wire 6 Neutral wire white wire 1 2 3 4 5 6 8 Reattach the PTAC PTHP control panel using the 4 screws removed earlier 9 Reattach the...

Page 17: ...Made continuously units Only Valve when the mode switch is in heating REMOTE WALL THERMOSTAT INSTALLATION LOCATION REQUIREMENTS For best performance thermostat should be mounted Approximately 5 ft 152 4 cm from floor Close to or in the room with the PTAC PTHP preferably on an inside partitioning wall On a section of wall without pipes or duct work For best performance do not mount thermo stat Clos...

Page 18: ... mountingholesinwallwhere marked OptionalMountingMethod Mountingholes on thermostat are designed to fit on a horizontally mounted junction box 4 Connect the field supplied 5 or 6 conduc tor NEC Class 2 24 volt thermostat wire to the terminals in accordance with the wiring diagram 5 Route the 24 volt thermostat wire along side the conduit or service cord to the location chosen for the thermostat 6 ...

Page 19: ...Used for PTHP only 3 Wall thermostat 1 2 3 14 Reconnect power NOTE On power up the LCD readout will dis play oP momentarily and then the room tem perature 1 Heat display 2 Cool display 3 Fan display 4 Set display 5 Mode button 6 Fan button 3 30 83 8 mm 4 55 115 6 mm 0 8 20 3 mm 1 2 5 6 3 4 WHIRLPOOL DIGITAL THERMOSTAT OPERATION Error Messages E4 Internal memory failure Replace thermostat two dashe...

Page 20: ...2 12 NOTES ...

Page 21: ...sor through the discharge line as a hot high pressure gas Therefrigerantentersthecondensercoilwhere it gives up some of its heat The condenser fan moves air across the finned surface of the condenser coil and facilitates the transfer of heat from the refrigerant to the relatively cooler outdoor air When a sufficient quantity of heat has been removed from the refrigerant gas the refriger ant will c...

Page 22: ...expansion is often referred to as boiling Since the blower is moving indoor air across the finned surface of the evaporator coil the expanding refrigerant absorbs some of the heat This results in a lowering of the indoor air temperature hence the cooling effect The expansion and absorption of heat causes the liquid refrigerant to evaporate and change back to a gas Once the refrigerant has been eva...

Page 23: ...air conditioner adds a component called a reversing valve It allows heat to be transferred from the outdoors into the room When the reversing valve is not energized the system operates in the cooling mode When the reversing valve is energized the normal direction of refrigerant flow is diverted at the valve The outdoor coil now becomes the low pressure side of the system and the inside coil become...

Page 24: ...the main valve body This reverse in flow pressure causes the main slide in the valve body to shift to the opposite end and reverses the flow of the entire system This reversed direction of refrigerant flow is maintained as long as the pilot solenoid is energized PILOT VALVE SOLENOID DE ENERGIZED COOLING The operation of the reversing valve is gov erned by the pilot solenoid coil There are two smal...

Page 25: ... floor in an area of average tempera ture with good air circulation Close proximity to the return air grille is the best choice Mercury bulb type thermostats must be level to control temperature accurately to the desired set point HEAT ANTICIPATORS Heat anticipators are small resistance heaters that are built into most electromechanical ther mostats wired in series with the control W circuit Their...

Page 26: ...n be calculated by multiplying the measured voltage to the unit times the mea sured current draw of all the heaters that are in operation to obtain the wattage watts Kilo watts are then obtained by dividing the watts by 1000 8635 400 CFM 21 6 CFM EXAMPLE Themeasuredvoltagetotheunitis 230 volts The measured current draw of the heaters is 11 0 amps 230 x 11 0 2530 2530 1000 2 53 Kilowatts 2 53 x 341...

Page 27: ...mp and electric resistance heat based on the outdoor ambient temperature Thesechange overtemperatures are based on the settings of the control The factory set point is at the one o clock position If you wish to change the factory set point insertaflat bladedscrewdriverintotheslotand turn counterclockwise to increase the change over set point or clockwise to decrease it NOTE Use the factory set poi...

Page 28: ... heating or cooling functions are active in this mode TEMPERATURE LIMITING THERMOSTAT The temperature limiting thermostat allows the temperature range of the thermostat to be varied To adjust the temperature range 1 Turn the thermostat temperature control to the center position 2 Pull the two control knobs off the control shafts and remove them 3 Remove the four screws from the control panel and r...

Page 29: ...t The unit is shipped in the Closed position with a locking screw to prevent it from being moved Removethescrewtooperatethecontrol When the lever is back the vent is open and the outside air is mixed with indoor air When the lever is forward the vent is closed and no outside air is admitted into the room Only room air is recycled through the unit REMOTE THERMOSTAT Remote thermostat units are contr...

Page 30: ...3 10 NOTES ...

Page 31: ...PONENT ACCESS Hot Start Relay Capacitor Fan Cycle Switch Hot Start Sensor Compressor Overload Protector Condenser Defrost Thermostat Control Chassis Components Fan Motor Indoor Thermostat Sensing Bulb Heat Anticipator Evaporator Heater Limit Switch Not Shown Condensate Valve Bellows Mode System Switch Reversing Valve Solenoid Coil Heat Pump Models Only Remote Control Unit Fan Switch ...

Page 32: ...x head screws from the control panel and lift the panel off the unit Refer to the photos at the top of the right column 4 Pullthecontrolknobsoffthecontrolshafts 5 If you are replacing the indoor thermostat remove the two hex head mounting screws as shown in the round inset Control Panel Screw Screw Screw Screw 4 Control Chassis Screws 7 Rotate the top of the chassis down so that you can access the...

Page 33: ...e Sw L3 C2 H1 OR Heat Anticipator BU Mode Sw Pin 3 BK Mode Sw Pin 2 RD Mode Sw Pin 1 BK Rev Valve 9 To remove the indoor thermostat a Disconnect the wires from the indoor thermostat terminals NOTE The wir ing for the thermostat is shown to the right and also on the Wiring Diagram supplied with the unit b Pull the sensing bulb heat anticipator assembly off the front of the evaporator see the photos...

Page 34: ... capacitor 6 Push the power cord strain relief out of the control chassis mounting hole and re move the power supply cord NOTE Be sure to reinstall the power supply cord leads to the mode switch terminals L1 smooth and L2 ribbed and the ends of the green ground wire to the chassis locations with their machine screws Also be sure to reinstall the strain relief on the power supply cord Electrical Sh...

Page 35: ...ting Failure to do so can result in death or electrical shock 4 Disconnectthewiresfromthedefrostther mostat terminals 5 Remove the two hex head screws from the defrost thermostat 6 Remove the outdoor grille from the rear of the unit 7 Pull the sensing tube out of the condenser and push the tube into the front of the unit as far as possible 8 Pull the sensing tube inside and remove the defrost ther...

Page 36: ...place all parts and panels before operating Failure to do so can result in death or electrical shock 5 To remove the hot start sensor a Disconnect the wires from the sensor terminals 4 To remove the hot start relay a Disconnect the wires from the relay terminals b Remove the two hex head screws from the relay and remove it Hot Start Relay Hot Start Sensor b Remove the two hex head screws from the ...

Page 37: ...ove the fan cycle switch a Disconnect the wires from the switch terminals b Press in on the locking arms and push the switch out of the control chassis cutout REASSEMBLY NOTE Make sure that you position the fan cycle switch with the pin 1 terminal to the left as shown before you rein stall it in the chassis cutout VT BK BU YL Locking Arms Pin 1 2 RD YL Black Ring BR Green Ring BU White Ring Clamp ...

Page 38: ...m the fan switch terminals 6 Press in on the locking arms and push the switch out of the control panel cutout 1 Unplugairconditionerordisconnectpower 2 Remove the front cover from the unit see page 2 11 for the procedure 3 Remove the four hex head screws from the remote control panel Remote Control Panel Screw Screw Screw Screw REASSEMBLY NOTE Make sure that you position the fan switch with the pi...

Page 39: ...re to do so can result in death or electrical shock 4 Remove the two hex head screws from the air deflector and remove the deflector 5 Remove the four hex head screws from the deck then lift the left end of the deck pull the right end tabs out of their slots and remove the deck 6 Lift the heater out of the unit and discon nect the two wires from the terminals 7 Toremovethelimitswitchfromthe heater...

Page 40: ...he black and red fan motor wires from mode switch terminals H and L Electrical Shock Hazard Disconnect power before servicing Replace all parts and panels before operating Failure to do so can result in death or electrical shock YL Fan Mtr Black Ring BR Fan Mtr Green Ring Mode Switch 6 5 COM L1 H L L2 2 9 1 3 8 4 7 BK Fan Mtr RD Fan Mtr 6 Disconnect the brown and yellow fan mo tor wires from the c...

Page 41: ...mount ing brackets and remove the brackets 11 Remove the remaining three hex head screws from the condenser shroud 1 bot tom and 2 side screws Fan Motor Bracket Screw 1 of 4 12 From the rear of the unit pull the defrost sensing tube out of the condenser and from behind the bracket and move it out of the way 13 Remove the two hex head condenser mounting screws from the chassis pan Brackets Screws 2...

Page 42: ...ep be careful not to damage the thin metal vanes of the condenser 16 Liftthefanmotorassemblyandcondenser fan shroud and pull the front motor shaft out of the opening in the frame then remove the assembly from the unit 17 Pull the condenser fan shroud and con denser fan off the motor Fan Motor Screw 1 or 3 Bracket REASSEMBLY NOTES When reinstalling the condenser fan posi tion the front edge of the ...

Page 43: ...onnect power before servicing Replace all parts and panels before operating Failure to do so can result in death or electrical shock Condenser Fan Shroud Side Screw 1 of 2 Bottom Screw Shroud Brackets Screws 2 each 5 Tilt the top of the condenser fan shroud forward and pull the left end away from the condenser just far enough to access the condensate valve bellows Condenser Fan Shroud 6 Remove the...

Page 44: ... reinstall the terminal cover on the compressor make sure that the overload protector is centered in the gasket hole and does not sit on any portion of the gasket 4 To remove the compressor a Remove the overload protector see step 3 b Disconnect the blue wire from the S V terminal and the red wire from the R U terminal of the compressor c Remove the gasket Electrical Shock Hazard Disconnect power ...

Page 45: ...e sealed system refrigerant into an approved recovery system e Disconnect the high side line from the compressor and the suction line from the accumulator g Lift the compressor from the unit and removethethreerubbershockmounts 1 2 Hex Bolt High Side Line To Compressor Suction Line To Accumulator Rubber Shock Mount 1 of 3 ...

Page 46: ...eckfromthefrontoftheunit seesteps 3 4 and 5 on page 4 9 Electrical Shock Hazard Disconnect power before servicing Replace all parts and panels before operating Failure to do so can result in death or electrical shock Screen 5 Remove the four hex head screws from the control chassis and rotate the chassis down Air Deflector Deck 6 Remove the two hex head screws from the evaporator mounting plate lo...

Page 47: ...ews two from the chassis flange two from the mounting plate and two from the chassis pan Remove the mounting plate from the unit Sensing Bulb Heat Anticipator Holder 7 Pull the indoor thermostat sensing bulb and heat anticipator off the evaporator and position it out of the way Mounting Plate Screws Chassis Pan Screws Chassis Flange Screws Unbraze Tubing Joints 11 After the evaporator cools remove...

Page 48: ...x head screws from the condenser shroud 1 bot tom and 2 side screws 6 Tilt the top of the condenser fan shroud forward and pull it away from the con denser just far enough to protect it from the brazing heat Electrical Shock Hazard Disconnect power before servicing Replace all parts and panels before operating Failure to do so can result in death or electrical shock Condenser Fan Shroud Side Screw...

Page 49: ... of the chassis pan Carefully pull the condenser back just far enough to clear the fan motor assembly when it is removed 10 Unbraze the three tubing joints two at the top and one at the bottom and remove them from the condenser 11 Remove the condenser from the unit Unbraze Tubing Joints Unbraze Tubing Joint Position Condenser Brackets Over Top Edge Of Chassis Pan ...

Page 50: ...ealed system refrigerant into an ap proved recovery system 4 To remove the solenoid coil see the photo at the top of the right column a Disconnect the two wire connectors from the coil terminals b Remove the hex head screw c Slide the coil off the valve Reversing Valve Solenoid Coil Screw Solenoid Coil Coil Wires 5 To remove the reversing valve and so lenoid a Remove the solenoid coil see step 4 b...

Page 51: ...ully coun terclockwise Warmer 6 Touch the positive ohmmeter test lead to terminal 1 The meter should indicate a closed 0 Ω circuit 7 Touch the positive ohmmeter test lead to terminal 3 L3 The meter should indi cate an open infinite circuit 8 Rotate the temperature control fully clock wise Cooler 9 Touch the positive ohmmeter test lead toterminal1 Themetershouldindicatean open infinite circuit 10 T...

Page 52: ...eswitch terminals shown in the following charts Refer to page 4 2 for the procedure for servic ing the heat anticipator 1 Unplug air conditioner or disconnect power 2 Disconnect the heat anticipator wires from the mode switch terminals 3 Set the ohmmeter to the R x 10K scale 4 Touch the ohmmeter test leads to the ends of the orange heat anticipator wires The meter should indicate approximately 56 ...

Page 53: ...he positive ohmmeter test lead to terminal 1 H1 The meter should indi cate a closed 0 Ω circuit 7 Touch the positive ohmmeter test lead to terminal 3 L3 The meter should indi cate an open infinite circuit 8 Rotate the screwdriver control clockwise When the control reaches its setpoint the meter should indicate a closed 0 Ω cir cuit Refer to page 4 5 for the procedure for servic ing the defrost the...

Page 54: ...test leads to the sensor terminals The meter should indi cate an open infinite circuit at room tem peratures above 65 F Refer to page 4 6 for the procedure for servic ing the hot start relay 1 Unplug air conditioner or disconnect power 2 Disconnect the wires from the relay termi nals 3 Set the ohmmeter to the R x 1 scale 4 Touch the ohmmeter test leads to the following relay terminals 1 to 3 open ...

Page 55: ...o so can result in death or electrical shock FAN CYCLE SWITCH REMOTE CONTROL UNIT FAN SWITCH Refer to page 4 7 for the procedure for servic ing the fan cycle switch and page 4 8 for the remote control unit fan switch 1 Unplug air conditioner or disconnect power 2 Disconnect the wires from the switch ter minals 3 Set the ohmmeter to the R x 1 scale 4 Clip one of the ohmmeter test leads to the cente...

Page 56: ... R x 1 scale 4 To test the heater touch the ohmmeter test leads to the heater wire connectors The meter should indicate between 11 and 17 Ω 5 To test the limit switch touch the ohm meter test leads to the terminals The meter should indicate a closed circuit at room temperature FAN MOTOR Refer to page 4 10 for the procedure for servic ing the fan motor 1 Unplug air conditioner or disconnect power 2...

Page 57: ...ing the compressor 1 Unplug air conditioner or disconnect power 2 Disconnect the three wires from the com pressor terminals 3 Set the ohmmeter to the R x 1 scale 4 Clip an ohmmeter test lead to the overload protector terminal C W 5 Touch the free test lead to the following compressor terminals The meter should indicate as shown Terminal R U 0 5 Ω Terminal S V 3 16 Ω Terminal S V to R U 3 65 Ω R U ...

Page 58: ...eath or electrical shock 1 Unplug air conditioner or disconnect power 2 Disconnect one of the wires from the sole noid coil terminals 3 Set the ohmmeter to the R x 100 scale 4 Touch the ohmmeter test leads to the solenoid coil terminals The meter should indicate between 1480 and 1520 Ω Refer to page 4 20 for the procedure for servic ing the solenoid coil ...

Page 59: ...as to increase to the point where it does not provide sufficient cool ing for the compressor motor When this oc curs the motor winding temperature will in crease causing the motor to overheat and openthecompressor soverloadprotector Con tinued overheating of the motor windings and cycling of the overload will eventually lead to compressor motor or overload failure METHOD OF CHARGING The preferred ...

Page 60: ...aporator An undercharged system will cause an intermit tent hissing and gurgling sound Intermit tent frosting and thawing of the evaporator is another indication of a low charge However frosting and thawing can also be caused by insufficient air over the evaporator Check for an undercharged system at the compressor If the compressor seems quieter than normal it is an indication of a low refriger a...

Page 61: ...e same symp toms as with an overcharged system An overcharge can cause the compressor to fail since liquid refrigerant is entering the suc tion line The charge for any system is critical When the compressor is noisy and you are sure that there is sufficient airflow over the evaporator coils suspectanovercharge Icingoftheevapo rator will not be encountered because the refrigerant will boil later if...

Page 62: ... the gauges may equalize very slowly When gauges are connected to a completely restricted system the gauges will run in a deep vacuum Whentheunitisturnedoff thegauges will not equalize at all A quick check for either condition begins at the evaporator Withapartialrestriction theremay be a gurgling sound at the capillary tube entrance to the evaporator The evaporator in a partial restriction could ...

Page 63: ...NS All Whirlpool PTAC units are equipped with capillary tubes When checking for a restricted capillary tube use the following procedure 1 Connect pressure gauges to the unit 2 Start the unit in the cooling mode If the pressures are normal after a few minutes of operation the check valve and cooling cap illary are not restricted 3 Switch the unit to the heating mode and observe the gauge readings a...

Page 64: ...and condenser Small capillary tubes connect each end of the main valve cylinder to the A and B ports of the pilot valve A third capillary is a common return line from these ports to the suction tube on the main valve body Four way reversing valves also have a capillary tube from the compressor discharge tube to the pilot valve The piston assembly in the main valve can only be shifted by the pressu...

Page 65: ...n Condensables Air In System Undercharged System Overcharged System Undercharged System Moisture In System Defective Compressor Defective Compressor Low Suction Pressure High Suction Pressure Low Head Pressure High Head Pressure Low Airflow Across Condenser Outdoor Ambient Temperature Too High Outdoor Ambient Temperature Too High For Operation In Heating Refrigerant System Restriction Refrigerant ...

Page 66: ...ing Heat Pump Is Line Voltage Present At Solenoid Valve System Cools When Heating Is Desired Is Solenoid Coil Good Is Selector Switch Set For Heat Reversing Valve Stuck Replace Reversing Valve Replace Solenoid Coil YES YES NO NO ...

Page 67: ... 6 ATE0753RPP 7 7 8 ATE0753SPP 3 7 6 ATE0943BPP 5 7 7 ATE0943CPP 1 7 5 ATE0943RPP 5 7 7 ATE0943SPP 1 7 5 ATE0953BPP 7 7 8 ATE0953CPP 3 7 6 ATE0953RPP 7 7 8 ATE0953SPP 3 7 6 ATE1243BPP 5 7 7 ATE1243CPP 1 7 5 ATE1243RPP 5 7 7 ATE1243SPP 1 7 5 ATE1253BPP 7 7 8 ATE1253CPP 3 7 6 ATE1253RPP 7 7 8 ATE1253SPP 3 7 6 ATE1545BPP 5 7 7 ATE1545CPP 1 7 5 ATE1545RPP 5 7 7 ATE1545SPP 1 7 5 ATE1555BPP 7 7 8 ATE155...

Page 68: ...9 Pg 7 12 7 8 or 9 Pg 7 12 ATR0743SPP 6 Pg 7 11 7 Pg 7 12 8 or 9 Pg 7 12 7 8 or 9 Pg 7 12 ATR0753CPP 6 Pg 7 11 7 Pg 7 12 8 or 9 Pg 7 12 7 8 or 9 Pg 7 12 ATR0753SPP 6 Pg 7 11 7 Pg 7 12 8 or 9 Pg 7 12 7 8 or 9 Pg 7 12 ATR0943CPP 6 Pg 7 11 7 Pg 7 12 8 or 9 Pg 7 12 7 8 or 9 Pg 7 12 ATR0943SPP 6 Pg 7 11 7 Pg 7 12 8 or 9 Pg 7 12 7 8 or 9 Pg 7 12 ATR0953CPP 6 Pg 7 11 7 Pg 7 12 8 or 9 Pg 7 12 7 8 or 9 Pg ...

Page 69: ...1 Pg 7 10 2 Pg 7 10 3 Pg 7 10 4 Pg 7 11 ATE1555CPP 1 Pg 7 10 2 Pg 7 10 3 Pg 7 10 4 Pg 7 11 ATE1555CPP 1 Pg 7 10 2 Pg 7 10 3 Pg 7 10 4 Pg 7 11 ATR0743CPP 1 Pg 7 10 2 Pg 7 10 3 Pg 7 10 4 Pg 7 11 ATR0743SPP 1 Pg 7 10 2 Pg 7 10 3 Pg 7 10 4 Pg 7 11 ATR0753CPP 1 Pg 7 10 2 Pg 7 10 3 Pg 7 10 4 Pg 7 11 ATR0753SPP 1 Pg 7 10 2 Pg 7 10 3 Pg 7 10 4 Pg 7 11 ATR0943CPP 1 Pg 7 10 2 Pg 7 10 3 Pg 7 10 4 Pg 7 11 ATR...

Page 70: ...3BPP 12 Pg 7 14 13 Pg 7 15 15 or 16 Pg 7 16 14 Pg 7 15 11 Pg 7 14 ATR0743RPP 12 Pg 7 14 13 Pg 7 15 15 or 16 Pg 7 16 14 Pg 7 15 11 Pg 7 14 ATR0753BPP 12 Pg 7 14 13 Pg 7 15 15 or 16 Pg 7 16 14 Pg 7 15 11 Pg 7 14 ATR0753RPP 12 Pg 7 14 13 Pg 7 15 15 or 16 Pg 7 16 14 Pg 7 15 11 Pg 7 14 ATR0943BPP 12 Pg 7 14 13 Pg 7 15 15 or 16 Pg 7 16 14 Pg 7 15 11 Pg 7 14 ATR0943RPP 12 Pg 7 14 13 Pg 7 15 15 or 16 Pg 7...

Page 71: ...7 5 WIRING DIAGRAMS DIAGRAM 1 ...

Page 72: ...7 6 DIAGRAM 3 DIAGRAM 2 ...

Page 73: ...7 7 DIAGRAM 4 DIAGRAM 5 ...

Page 74: ...7 8 DIAGRAM 7 DIAGRAM 6 ...

Page 75: ...7 9 DIAGRAM 8 ...

Page 76: ...R FUSE 265V MODELS ONLY L1 L2 L1 3 2 2 BK HIGH LOW R BR Y R C F SYSTEM SWITCH FUSE 265V MODELS ONLY SYSTEM SWITCH FAN CYCLE SWITCH COM L2 SYSTEM SWITCH FAN MOTOR 9 L H 9 H HIGH 9 L LOW L1 L2 L1 2 3 2 BK BK BU BU R BR Y R C F SYSTEM SWITCH SYSTEM SWITCH MAIN THERMOSTAT COM L2 SYSTEM SWITCH FAN MOTOR 3 5 SYSTEM SWITCH FAN CYCLE SWITCH 9 L H 1 2 FUSE 265V MODELS ONLY HIGH LOW 9 H HIGH 9 L LOW ...

Page 77: ...MAIN THERMOSTAT L2 L1 2 3 2 BK BU BU R BK BU R R R S C C H SYSTEM SWITCH DEFROST THERM COM L2 SYSTEM SWITCH COMPRESSOR OVERLOAD 3 5 SYSTEM SWITCH HOT START RELAY 2 3 4 5 L1 FUSE 265V MODELS ONLY MAIN THERMOSTAT 4 HEAT FAN MOTOR CYCLING L1 L2 L1 2 1 2 BK BK R BU Y R BR Y R C F SYSTEM SWITCH SYSTEM SWITCH COM L2 SYSTEM SWITCH FAN MOTOR 1 5 SYSTEM SWITCH FAN CYCLE SWITCH 9 L H 1 2 FUSE 265V MODELS ON...

Page 78: ...U WH BR R BR BK BK R TN SYSTEM SWITCH HEAT LIMIT SW HEATING ELEMENT COM L2 SYSTEM SWITCH 1 5 8 3 SYSTEM SWITCH SYSTEM SWITCH SYSTEM SWITCH HOT START RELAY 7 6 1 3 HOT START RELAY COIL HOT START SENSOR ANTICIPATOR L1 FUSE 265V MODELS ONLY MAIN THERMOSTAT REV VALVE SOLENOID 8 ELECTRIC HEAT HOT START SENSOR OPEN ROOM ABOVE 65 F AND OUTDOOR AMBIENT BELOW 47 F HEAT PUMP MODELS L2 L1 2 1 2 BK BK R BU R ...

Page 79: ...CTRIC HEAT NON HEAT PUMP MODELS HEAT LIMIT SW L2 L1 2 1 2 BK R OR OR BU R SYSTEM SWITCH HEATING ELEMENT COM L2 SYSTEM SWITCH 1 5 SYSTEM SWITCH SYSTEM SWITCH 6 7 ANTICIPATOR L1 FUSE 265V MODELS ONLY MAIN THERMOSTAT ...

Page 80: ...1 BK R BR Y BU C F 1 3 2 2 4 R FAN RELAY TRANSFORMER COM 24V FAN SPEED SWITCH FAN MOTOR G WALL THERMO L2 FUSE 265V MODELS ONLY L1 BK Y PU BK 2 4 R 3 1 COOLING RELAY SUCTION LINE THERMO TRANSFORMER COM 24V Y WALL THERMO L2 BU R R S C C H COMPRESSOR OVERLOAD FUSE 265V MODELS ONLY ...

Page 81: ...VE HEAT PUMP MODELS L1 BK RD BU BU RD 1 5 4 1 3 2 3 R HEATING RELAY HOT START RELAY DEFROST THERM TRANSFORMER COM 24V W WALL THERMO L2 BU R R R S C C H COMPRESSOR OVERLOAD FUSE 265V MODELS ONLY L1 WH BK BK BK RD 4 4 2 R REV VALVE RELAY HEATING RELAY REV VALVE SOLENOID COIL TRANSFORMER COM 24V B WALL THERMO L2 FUSE 265V MODELS ONLY ...

Page 82: ...NSFORMER COM 24V W WALL THERMO L2 BU BR 3 1 4 6 HOT START RELAY HOT START SENSOR ELECTRIC HEATER HEATER LIMIT SW L1 BK TN DEFROST THERM 4 6 RD BR BU BU RD 1 5 4 1 3 1 2 R HEATING RELAY HEATING RELAY HOT START RELAY TRANSFORMER COM 24V W WALL THERMO L2 FUSE 265V MODELS ONLY 16 ELECTRIC HEAT HOT START SENSOR OPEN ROOM ABOVE 65 F AND OUTDOOR AMBIENT BELOW 47 F REVERSING VALVE ENERGIZED SEE 14 HEAT PU...

Page 83: ...7 17 17 ELECTRIC HEAT NON HEAT PUMP MODELS HEATING ELEMENT HEATER LIMIT SWITCH L1 BU BK BK Y RD 2 4 R HEATING RELAY TRANSFORMER COM 24V W WALL THERMO L2 FUSE 265V MODELS ONLY ...

Page 84: ...7 18 NOTES ...

Page 85: ...er fan blade and condenser shroud periodically every 6 to 12 months Remove all debris lint dirt mold fungus etc 5 Clean the blower housing area and blower wheel with an antibacterial antifungal cleaner 6 Use a biodegradable cleaning agent and degreaser on the condenser fan and con denser shroud Use warm or cold water when rinsing these items and allow them to dry thoroughly before reinstalling the...

Page 86: ... bottom of the wall sleeve for internal draining of condensate or to the rear wall sleeve flange for external draining Recommended on all units to remove excess condensate Packaged in quantities of ten 4396587 DEEP WALL SLEEVE EXTENSION 4 deep anodized aluminum extension that attaches to the outside of the wall sleeve when the wall is thicker than 13 thick 11 3 4 when a subbase is used 12 3 4 when...

Page 87: ... A three foot insulated plenum that at taches to the left or right side of the duct adapter The extension can be cut to length by the installer REPLACEMENT FILTER PACK Original equipment return air filters Reusable and can be cleaned by vacuum ing or washing 4396600 LATERAL DUCT ADAPTER Attaches to the PTAC PTHP unit and provides a transition to direct up to 35 of the total CFM to a secondary room...

Page 88: ...he unit consists of a pair of switches that are controlled by a 24 volt relay Themainpowersupplyiswiredinseriesthrough the relay contacts When the desk control switch is open the 24 volt supply is removed from the relay coil the contacts are closed and the air conditioner will operate When the desk control switch is closed the 24 volt supply is applied to the relay coil the con tacts open and the ...

Page 89: ...e humidity before noticing any cooling effect Has the cooling load been increased by additional devices such as computer equipment or has the room area been increased where the PTAC PTHP is lo cated If conditions have changed the PTAC PTHP may not be able to cool and conditionaseffectivelyaspreviouslyplanned ENVIRONMENTAL EFFECTS HEATING MODE Is the PTAC PTHP properly sized to the room area and he...

Page 90: ...8 6 NOTES ...

Page 91: ...RIZED SERVICER FOR LITERATURE ORDERS PHONE 1 800 851 4605 FOR TECHNICAL INFORMATION AND SERVICE POINTERS www servicematters com IN CANADA FOR PRODUCT SPECIFICATIONS AND WARRANTY INFORMATION CALL 1 800 461 5681 FOR TECHNICAL ASSISTANCE WHILE AT THE CUSTOMER S HOME CALL THE TECHNICAL ASSISTANCE LINE 1 800 488 4791 HAVE YOUR STORE NUMBER READY TO IDENTIFY YOU AS AN AUTHORIZED SERVICER FOR WHIRLPOOL P...

Page 92: ...CORPORATION ...

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Whirlpool ATE0743RPP, Technical Manual

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