Maytag ATB1935HRW & Q Service Manual
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Maytag ATB1935HRW & Q Service Manual

Maytag ATB1935HRW & Q Service Manual

19 and 21 cu. ft. top mount refrigerators
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Service
19 & 21 Cu. Ft.
Top Mount
Refrigerators
Service Manual for Amana
This manual is to be used by qualified appliance
technicians only. Maytag does not assume any
responsibility for property damage or personal
injury for improper service procedures done by
an unqualified person.
models
®
This Manual covers 19,21 Cu. Ft.
Top Mount Refrigerators
See page i for model listings
16021832
Revision 0
August 2002

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Summary of Contents for Maytag ATB1935HRW & Q

  • Page 1 This Manual covers 19,21 Cu. Ft. Top Mount Refrigerators See page i for model listings Service 19 & 21 Cu. Ft. Top Mount Refrigerators Service Manual for Amana models ® This manual is to be used by qualified appliance technicians only. Maytag does not assume any responsibility for property damage or personal injury for improper service procedures done by an unqualified person.

  • Page 2: Safety Precautions

    SAFETY PRECAUTIONS USE ONLY GENUINE MAYTAG APPROVED FACTORY REPLACEMENT COMPONENTS. Safety Precautions  2002 Maytag Corporation...
  • Page 3 INTRODUCTION lower right INTRODUCTION  2002 Maytag Corporation...
  • Page 4 INTRODUCTION  2002 Maytag Corporation...
  • Page 5 CONTENTS CONTENTS  2002 Maytag Corporation...
  • Page 6 Contents  2002 Maytag Corporation...

  • Page 7: Section 1. General Information

    SECTION 1. GENERAL INFORMATION s WARNING Observe all electrical codes and local codes and ordinances. properly wired, Before plugging in power cord, oper- grounded and polarized. ating or testing, follow grounding instructions in Grounding Section. s WARNING s WARNING SECTION 1. GENERAL INFORMATION ...
  • Page 8 SECTION 1. GENERAL INFORMATION  2002 Maytag Corporation...
  • Page 9 When using a heat gun or hair dryer, use low heat.) (1) - Restricted Capillary Tube SECTION 1. GENERAL INFORMATION  2002 Maytag Corporation...
  • Page 10 (2) - Partial Restriction In Low Side (4) - Incorrect Refrigerant Charge Tubing (3) - Slow Leak In System SECTION 1. GENERAL INFORMATION  2002 Maytag Corporation...

  • Page 11: Leak Detector

    Robinair equipment is listed as a reference only, equivalent substitutes may be used. Additional tools may be required for special situations. LEAK DETECTOR - DRIERS/FILTERS - OTHER TOOLS REQUIRED BUT NOT NECESSARILY DEDICATED TO R134A SERVICE: SECTION 1. GENERAL INFORMATION ...

  • Page 12: System Flush

    SYSTEM FLUSH - LIMIT TIME OF EXPOSURE TO THE ATMOSPHERE - LOW SIDE LEAKS PLUGGED CAPILLARY TUBE - SECTION 1. GENERAL INFORMATION  2002 Maytag Corporation...
  • Page 13 evaporator, heat exchanger, drier and compressor Evaporator Suction Line Heat Exchanger Capillary Process Leaks at joints 1 or 2 will require Stub the replacement of the compressor and drier. Perform system flush, Suction Line Connection at sweep and final charge. the compressor Condenser lower...
  • Page 14 SECTION 1. GENERAL INFORMATION  2002 Maytag Corporation...
  • Page 15 SECTION 1. GENERAL INFORMATION  2002 Maytag Corporation...
  • Page 16 REFRIGERATOR DIAGNOSIS SEALED SYSTEM IDENTIFY REFRIGERANT R134a RECOVER RECOVER REPAIR REPAIR SWEEP LOW SIDE LEAK, PLUGGED CAPILLARY FINAL CHARGE TUBE, COMPRESSOR REPLACEMENT? FLUSH* SWEEP FINAL CHARGE FLUSH INCLUDES COMPRESSOR R E P L A C E M E N T Before "turn- ing a screwdriver", many checks can be made simply by using your senses:...
  • Page 17 High Side - Lower than normal Low Side - Slightly lower than normal Wattage Lower than normal The following situations are High Side Higher than normal typical, however other factors such as Low Side - Slightly lower than normal gauge placement, line voltage and ambi- Wattage Higher than normal ent temperature must also be consid-...
  • Page 18 High Side - Lower than normal Low Side Higher than normal Wattage - Lower than normal Diagnosis High Side - Normal Low Side - Normal to slightly higher than normal - suction line possibly sweats Wattage Normal Diagnosis SECTION 1. GENERAL INFORMATION ...
  • Page 19 DRIER SECTION 1. GENERAL INFORMATION  2002 Maytag Corporation...
  • Page 20 A VACUUM WILL BE MAINTAINED IF THE SYSTEM IS GOOD. SECTION 1. GENERAL INFORMATION  2002 Maytag Corporation...
  • Page 21 (see System Flush Procedure) (see System Flush Procedure). SECTION 1. GENERAL INFORMATION  2002 Maytag Corporation...
  • Page 22 (refer to figure 1). Due to the extra flushing and sweep charge procedures, about 12 ounces of R134a refrigerant should be added to the original charge specified on the model/serial plate and loaded into the charging cylinder initially. (figure SECTION 1. GENERAL INFORMATION ...
  • Page 23 Flush into discharge line, through hi-side Flush the entire system (less compressor) and out the yoder loop at drier inlet. out the suction line. (figure 2) (figure 3 (refer to figure 4). SECTION 1. GENERAL INFORMATION  2002 Maytag Corporation...
  • Page 24 During final flush, remove old compressor, and install replacement compressor leaving plugs in place until brazing. (figure 5). CAUTION Flush complete - ready for sweep charge. SECTION 1. GENERAL INFORMATION  2002 Maytag Corporation...
  • Page 25 SECTION 1. GENERAL INFORMATION  2002 Maytag Corporation...
  • Page 26 SECTION 1. GENERAL INFORMATION  2002 Maytag Corporation...

  • Page 27: Section 2. Components

    SECTION 2. COMPONENTS A new drier must be installed each time any component of the system is opened or replaced. Here Here (See Sweep Charging and Refrigerant Recovery.) Here SECTION 2. COMPONENTS  2002 Maytag Corporation...
  • Page 28 Locate and remove old drier. Install new drier. The new drier is installed in the following manner. SECTION 2. COMPONENTS  2002 Maytag Corporation...
  • Page 29 (See Sweep Charging and Refrigerant Recovery.) Shroud/ Here Cond. Front Condenser Screw Mounting Screw Condenser Mounting Screw Here SECTION 2. COMPONENTS  2002 Maytag Corporation...
  • Page 30 Common Start Common SWITCH: Off, Run, Start Start Power Plug Capacitor SECTION 2. COMPONENTS  2002 Maytag Corporation...
  • Page 31 SECTION 2. COMPONENTS  2002 Maytag Corporation...
  • Page 32 Over- Common load Pro- tector Start Dimple Capacitor Relay Mounting Blue Screw Capacitor Leads Orange See "Testing The Capacitor" on page 2-7. NOTE: We discourage using a voltme- ter to check the performance of the PTC device because the test results are influenced by several factors such as its dependences on the line voltage to the SECTION 2.
  • Page 33 compressor, the response characteristic of the voltmeter and the PTC device temperature at the time the compressor is energized. s WARNING SECTION 2. COMPONENTS  2002 Maytag Corporation...
  • Page 34 SECTION 2. COMPONENTS  2002 Maytag Corporation...
  • Page 35 Thermal Mass Thermocouple Tape • Compressor Runs Continuously • Compressor Won't Run SECTION 2. COMPONENTS  2002 Maytag Corporation...
  • Page 36 COLDEST WARMER Control Housing Thermal Mass Screwdriver TO REMOVE THE THERMAL MASS SECTION 2. COMPONENTS  2002 Maytag Corporation...
  • Page 37 SECTION 2. COMPONENTS  2002 Maytag Corporation...
  • Page 38 Place large opening in belt over cog Disengage teeth Gear (Auto to adjust tension Damper) + / - on the belt Auto Damper Place large opening in belt over large cog Slide control to be centered to align large tooth with large cog wheel cavity Place belt in both rear guides...
  • Page 39 Control Housing Defrost Timer Timer (To advance turn clockwise) SECTION 2. COMPONENTS  2002 Maytag Corporation...
  • Page 40 #2 Yellow White #4 Orange #3 Blue To Test Turn Timer Check Between Knob To ** Terminals SECTION 2. COMPONENTS  2002 Maytag Corporation...
  • Page 41 When using the meter, avoid touching the probes since this could result in a false reading and misdiag- nosis. WHITE BLUE YELLOW BLUE WHITE ORANGE FOR DIAGNOSTIC CONTINUITY CHECK 240K OHMS To test the defrost heater and thermo- stat when the evaporator temperature is F.
  • Page 42 Note Evaporator Cover NOTE: When installing the replacement heater, do not touch the glass. Salt from finger tips could cause damage. Defrost Thermostat Defrost Defrost Heater Heater Clip SECTION 2. COMPONENTS  2002 Maytag Corporation...
  • Page 43 Remove Motor Wire Harness Lock Lever Remove Ground Wire Screw Remove Fan Motor Bracket Screws (3) To remove the lead connector from the condenser fan motor, grasp the connec- tor with your thumb inserted between the connector and the locking lever as shown then pull the connector away from the motor.
  • Page 44 Freezer Tower SECTION 2. COMPONENTS  2002 Maytag Corporation...
  • Page 45 Freezer Liner Fan Motor Evaporator Bracket Fan Motor Retainer Mounting Evaporator Screws Cover Evaporator Fan Blade "Checking the Freezer Fan Motor". SECTION 2. COMPONENTS  2002 Maytag Corporation...
  • Page 46 SECTION 2. COMPONENTS  2002 Maytag Corporation...
  • Page 47 SECTION 3. CABINET AND RELATED COMPONENTS SECTION 3. CABINET AND COMPONENTS  2002 Maytag Corporation...
  • Page 48 - (Two support hook frame design.) Glass Rear Trim Frame Front Trim - (Three support hook frame design.) SECTION 3. CABINET AND COMPONENTS  2002 Maytag Corporation...
  • Page 49 SCOOP PIN RIBBON SCOOP FRONT SNAP RIBBON SLIDE CONTROL REAR SNAP SECTION 3. CABINET AND COMPONENTS  2002 Maytag Corporation...
  • Page 50 Freezer Control Knob Control Push Locking Scoop Tab Down To Push Disengage Down The Control And Lift Off Type #1 Freezer Tower Assembly Flex Scoop To Disengage Pins From Shelf Frame And Control SECTION 3. CABINET AND COMPONENTS  2002 Maytag Corporation...

  • Page 51: Damper Control

    Actuation Tape Rear Locking Tabs Actuator Control Front Locking Knob (Set Tabs at Nr."1") TYPE 2 Manual Damper Control Actuator Arm And Tape Do Steps 1-6, Replacing the Manual Damper Control SECTION 3. CABINET AND COMPONENTS  2002 Maytag Corporation...
  • Page 52 "Off" A trap is incorporated with the drain tube to prevent warm air from entering into the refrigerator. s WARNING Do not pull the door by the handle or the panel will shift out of alignment. SECTION 3. CABINET AND COMPONENTS ...
  • Page 53 Remove all food from the fresh food door. Do not attempt to twist the door panel after all the screws have been tightened. Remove all food from the freezer door "Off" NOTE: Do not over tighten the screws. "Off" SECTION 3. CABINET AND COMPONENTS ...
  • Page 54 Wheel Adjustment Remove These Three Screws To Remove Wheel Bracket Front Wheel Assembly Arrow Pointing Out Mounting And Adjustment Screws (The center hinge mounting bracket has to be turned 180 mount on the left side.) SECTION 3. CABINET AND COMPONENTS ...
  • Page 55 toe-in toe-out toe-out toe-in Do not loosen the screws along the hinge side. toes-in toe-out Steps 2 and 3. Balloon Seal Magnetic Strips Door Seal And Magnetic Strips toe-in toe-out SECTION 3. CABINET AND COMPONENTS  2002 Maytag Corporation...
  • Page 56 Freezer Light Switch Freezer Door Switch SECTION 3. CABINET AND COMPONENTS  2002 Maytag Corporation...

  • Page 57: Section 4. Ice Maker

    SECTION 4. SERVICING OF AUTOMATIC ICE MAKERS IN TOP MOUNT REFRIGERATORS Neutral side of line Motor connection Heater connector Thermostat connection L1 side of line Water valve connection Read this section completely before doing any testing or adjusting. Refer to the tech sheet for complete testing information.
  • Page 58 Do not short any contacts other than those specified. Damage to the ice maker can result. Shut-off arm Screw adjustment Mold attachment (Screw access ports) SECTION 4. ICE MAKER  2002 Maytag Corporation...
  • Page 59 CAUTION There are several slotted shafts on the motor assembly board. Do not under any circumstances insert a screw- driver and attempt to turn these shafts. These slots are to permit assembly only. There are no repairable or re- placeable components in the module. Unless your are replacing the module, there should be no need to remove it when diagnosing or repairing the ice...
  • Page 60 Water ad- justment May have area knob Water valve energized Ejector blade stop position 7.5 secs 140cc fill (about 1:30 o'clock) Viewed from front (Module Side) WHAT HAPPENS DURING BLADE Ejector stalls on ROTATION (Do Not ice (1/2 minute Test if blades are past to 5 minutes) rest position).
  • Page 61 Screws Pull (Front of Black Housing) Thermostat Retaining Clips Only the thermostat, mold, with heater and wiring harness are replace- able. Any other failure (including the motor) requires replacement of the module assembly. If you are replacing the mold assembly, it comes with a new mold heater installed.
  • Page 62 (Short Arm - Regular I / M) Installation Procedure (same for both arms): Into bushing 1. Push arm into center slot in white bushing - bottom out Notch Flange Water adjustment knob location (not on all models) Fill cup 2. Push arm thru fill cup flange 3.
  • Page 63 (Assure uniform ice crescents) Mounting Screw 1/4" Screw Loosen Level I/M by sliding left or right in slot of bracket tighten Pull cup up and out of slot - requires considerable force Remove plug SECTION 4. ICE MAKER  2002 Maytag Corporation...
  • Page 64 Mold 185 watts, 72 ohms Heater Thermostat Close 17 (+ / -) 3 (Bimetal) Open 32 (+ / -) 3 Water Fill 140cc, 7.5 seconds Motor 1.5 watts, 8,450 ohms Module Stamped circuit, Plug- in connectors Cycle One revolution (ejects and water fill) SECTION 4.

  • Page 65: Section 5. Troubleshooting

    SECTION 5. TROUBLESHOOTING DISCONNECT THE UNIT FROM THE POWER SOURCE Unit does not run. No light in •No power at AC distribution •Check and advise customer to refrigerator. panel of house. call an electrician. •AC outlet. •Advise customer: --Defective outlet. --to have defective outlet replaced.
  • Page 66 DISCONNECT THE UNIT FROM THE POWER SOURCE •Complete or possible partial •See "Checking Operating restriction under high ambi- Pressure". ent (cycles on overload pro- tector after unit stops and tries to restart). Unit runs excessively or •Check to ensure light does •Check light switch and continuously.
  • Page 67 DISCONNECT THE UNIT FROM THE POWER SOURCE --AC circuit to fan open (lower --Refer to wiring diagrams and wattage readings). check circuit. •Not defrosting (lower wat- •See below: tage readings than normal and frost buildup or evapor- ator). --Replace defective part or parts. --Defective defrost timer, defrost heater or defrost --Refer to wiring diagrams and...
  • Page 68 DISCONNECT THE UNIT FROM THE POWER SOURCE •High usage of refrigerator •Advise customer. especially in high ambient. Unit run excessively. The refrig- •Setting of temperature •Reset control. erator compartment and freezer control too high for prevail- compartment both too cold ling environmental and usage conditions.
  • Page 69 DISCONNECT THE UNIT FROM THE POWER SOURCE •High resistance contacts or •Check and replace broken part. too many broken wire stands Refer to wiring diagrams and in compressor motor AC check circuit. circuit (high wattage readings, unit may be cycling on the overload protector).
  • Page 70 DISCONNECT THE UNIT FROM THE POWER SOURCE --Void in insulation. --Check and add insulation if possible. --Overcharged. --Evacuate system and recharge with proper amount of refrigerant. --Bad door seals. •Replace. --Condenser fan not running. --Check fan motor and replace part if needed. Excessive dehydration of •Condition requires covering •Advise customer.

  • Page 71: Specifications

    SECTION 6. SPECIFICATIONS SECTION 6. SPECIFICATIONS  2002 Maytag Corporation...
  • Page 72 Auto Damper Control Temperature Control Normal Setting Cut / Out ( 1.5 Cut / In ( 1.5 Condenser Capillary Tube Length Diameter Defrost thermostat Cut / Out (± 3 Cut / In (± 11 Defrost Timer Defrost Cycle Defrost Time Defrost Heater Ohms Watts...
  • Page 73 Auto Damper Control Temperature Control Normal Setting Cut / Out ( 1.5 Cut / In ( 1.5 Condenser Capillary Tube Length Diameter Defrost thermostat Cut / Out (± 3 Cut / In (± 11 Defrost Timer Defrost Cycle Defrost Time Defrost Heater Ohms Watts...

  • Page 74: Top Mount

    SECTION 7. SCHEMATICS TOP MOUNT DUAL SLIDE CONTROL MODELS 7-2 - 7-4 SECTION 7. SCHEMATICS  2002 Maytag Corporation...
  • Page 75 DISCONNECT THE UNIT FROM THE POWER SOURCE FRZ LIGHT MOTOR (ON CERTAIN MODELS) ICE MAKER RADIANT HEATER MODEL RECEPTACLE RESISTANCE ±5% SIZE (ON PROVISIONAL (OHMS) OR ICE MAKER 36.2 MODELS ONLY) DEFROST 36.2 THERMOSTAT 31.2 28.7 28.7 26.3 RADIANT HEATER FRZ LIGHT TEMPERATURE SWITCH...

  • Page 76: Freezer Fan

    LINE CORD CABINET LIGHT(S) LIGHT SWITCH GRAY WHITE (ON CERTAIN FREEZER MODELS ONLY) LIGHT LIGHT SWITCH GRAY WHITE WHITE WHITE ICE MAKER (ON PROVISIONAL OR ICE MAKER WHITE WHITE MODELS ONLY) WATER VALVE GRAY (ON PROVISIONAL OR ICE MAKER MODELS ONLY) (MECHANICAL DEFROST TIMERS) TEMPERATURE CONTROL...
  • Page 77 SECTION 7. SCHEMATICS  2002 Maytag Corporation...

This manual is also suitable for:

Atb2135hrwAtb1935hrqAtb2135hrq

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