Table of Contents
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Service
Over The Range
Domestic Microwave Ovens
Service Manual for
Amana
®
This manual is to be used by qualified appliance
technicians only. Amana does not assume any
responsibility for property damage or personal
injury for improper service procedures done by an
unqualified person.
Models and manufacturing
numbers in this manual
MVH140E
P1319501M
MVH140W
P1319502M
MVH240E
P1319503M
MVH240W
P1319504M
MVH240L
P1319505M
MVH340E
P1319506M
MVH340W
P1319507M
MVH340L
P1319508M
RS2100005
Revision 0
September 1998
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Summary of Contents for Amana MVH140E
- Page 1 Domestic Microwave Ovens Service Manual for Amana ® This manual is to be used by qualified appliance technicians only. Amana does not assume any responsibility for property damage or personal injury for improper service procedures done by an unqualified person. RS2100005...
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Page 2: Important Product Information
Important Product Information WARNING WARNING To avoid risk of electrical shock, injury, or death, make Precautions to be observed before and during sure these grounding instructions are followed. servicing to avoid possible exposure to excessive microwave energy or electrical shock, disconnect power to oven. -
Page 3: Table Of Contents
Relay ............... 22 Control Key Panel ........... 23 Circuit Board ............24 Fuse ................ 24 Oven Thermostat ............ 24 Base Thermostat ............. 24 Amana Appliances Inc. • 2800 220thTrail • Amana, Iowa • 52204 • Printed in the U.S.A. RS2100005 Rev. 0... -
Page 4: Important Information
(such as exposure to electrical shock) may result. CAUTION Amana will not be responsible for any injury or property damage from improper service procedures. If performing service on your own product, assume responsibility for any personal injury or property damage which may result. -
Page 5: Important Safety Information
8. Do not for any reason defeat the interlock switches– The basic design of the Amana microwave oven makes there is no valid reason for this action at any time; it an inherently safe device to both use and service. -
Page 6: Radiation Leakage Testing
Measurement With the Outer Panel WARNING Removed Check for radiation leakage after servicing. Should the leakage be more than 4mW/cm inform Amana DANGER Refrigeration, Inc. immediately. After repairing or Avoid contacting any high voltage components. replacing any radiation safety device, keep a written record for future reference, as required by DHHS and HEW regulations. -
Page 7: Installation Instructions Mvh140, 240, And 340
Installation Instruction Electrical rating of this oven: 120V AC 60Hz. Proper installation is the installer’s responsibility! • 11.9 A / 1350 W (Microwave oven only) Write the model & serial numbers on the owner’s manual. The model number label is located on the oven •... - Page 8 Installation Instruction WARNING WARNING If you do not mount the oven as instructed, you risk If you do not use the microwave oven as instructed, personal injury and/or property damage. you could be exposed to excessive microwave energy. CAUTION Do not expose yourself to excessive microwave energy! Before you begin installing the oven, PLACE A PIECE •...
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Page 9: Parts, Tools, And Materials
Installation Instruction Parts, Tools, and Materials The following parts are supplied with the oven: NOTE: Depending on ventilation requirements, not all parts will be used. One power cord clamp and One dark-colored mounting screw (to hold the power cord) Backdraft damper / duct connector Actual Size (for roof-venting or wall-venting installation) Not Actual Size ( 2 pieces must be... -
Page 10: Preparing Electrical Connection
Installation Instruction Preparing Electrical Connection Roof Venting WARNING Roof cap To avoid risk of electrical shock, this appliance must be grounded. 3 1/4"x10" duct 1. Locate grounded electrical outlet for oven in the cabinet above the oven. NOTE: Outlet should be on a circuit dedicated to the Through-the-roof Roof venting microwave oven (120 VAC, 60 Hz) with a 15 or... - Page 11 Installation Instruction Room Venting To calculate the equivalent length of each duct piece Oven is located on an inside wall of house. used, see examples below. Room Venting For 3 1/4"x10" Systems 3 1/4"x10" 6ft. wall cap 90 elbow 2ft. 1-3 1/4"...
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Page 12: Preparing Venting Blower
Installation Instruction Preparing Venting Blower WARNING To avoid risk of electrical shock or personal injury, Blower unit disconnect power to unit before working on vent blower. Exhaust ports NOTE: Do not pull or stretch blower wiring. Pulling or stretching blower wiring could result in electrical 5. -
Page 13: Preparing Wall And Upper Cabinet
Installation Instruction 4. Place blower unit back into cabinet. Verify exhaust 2. Find and mark placement of one or two points ports face towards the front of the unit. indicating stud location on the wall. 5. Attach blower plate to cabinet. Secure blower unit •... - Page 14 Installation Instruction Drilling Holes in the Wall and Upper Cabinet 4. Cut or drill a 2" hole at the area marked M, for power WARNING cord access into upper cabinet. NOTE: If upper cabinet is metal, cover the edges of the To avoid electrical shock or personal injury, be very hole to prevent damage to the power cord.
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Page 15: Attaching Oven To The Wall
Installation Instruction NOTE: Leave at least the wall thickness of space to allow spring toggle head to open once placed Power cord into the wall. Spring Wall Toggle bolt toggle head Power cord hole Mounting plate 4. Locate wall stud holes and insert lag screws through mounting plate and into "... - Page 16 Installation Instruction 6. Roof-vented installation: Align the damper/duct 9. Grasp filter screen with one hand holding the ring connector with the vent on top of the microwave and the other hand holding the opposite end. Insert oven. Damper should be on top of tab. Use two the end of the filter screen without ring into the tapping screws (bright-colored) to attach damper/ opening and slide towards the side of the microwave...
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Page 17: General Information
Please read the owner’s manual information. It will tell Asure™ Extended Service Plan how to use all the features of this microwave oven. Amana offers long-term service protection for this new oven. Asure™ Extended Service Plan is specially designed to supplement Amana’s strong warranty. This Location of Model Number plan covers parts, labor, and travel charges. -
Page 18: Grounding Instructions
General Information Grounding Instructions This appliance must be grounded. If an electrical short Properly Polarized and circuit occurs, grounding reduces the risk of electric Grounded Outlet shock by providing an escape wire for the electric current. The cord for this appliance has a grounding wire with a grounding plug. -
Page 19: Care And Cleaning
The charcoal filter cannot be cleaned. To order a new charcoal filter, contact the Parts Depart- ment at your nearest Authorized Service Center or call Amana at 1-800-843-0304 (inside U.S.A.) 1-319-622-5511 (outside U.S.A.). Order Charcoal Filter Kit #: MVHRK2. -
Page 20: Cooktop/Night Light Replacement
Care and Cleaning 4. Remove old filter. Oven Light Replacement 1. Unplug oven or turn off power at the main power supply. 2. Remove the vent cover mounting screws. (2 middle screws) 3. Tip the cover forward, then lift out to remove. 5. -
Page 21: Testing Procedures
Testing Procedures Disconnect power before performing the following WARNING procedures unless testing requires it. NOTES: Interlock Monitor Switch Test • Perform microwave energy leakage test if unit is When the door is opened slowly, an audible click should serviced for any reason. be heard. -
Page 22: High Voltage Transformer
Testing Procedures Disconnect power before performing the following WARNING procedures unless testing requires it. High Voltage Transformer Humidity Sensor 1. Disconnect power to oven and remove control panel, 1. Disconnect power to oven and remove control panel, (see “Control Panel” section in Disassembly (see “Control Panel”... -
Page 23: Control Key Panel
Testing Procedures Disconnect power before performing the following WARNING procedures unless testing requires it. Control Key Panel MVH240 models Conn. Conn. 1. Disconnect power to oven and remove control panel, Vent HI/LOW/OFF 1 - 8 6 - 8 (see “Control Panel” section in Disassembly Light HI/LOW/OFF 1 - 9 6 - 9... -
Page 24: Circuit Board
Testing Procedures Disconnect power before performing the following WARNING procedures unless testing requires it. Circuit Board Oven Thermostat Following symptoms indicate a failed circuit board. 1. Disconnect power to oven and remove control panel, (see "Control Panel" section). • High voltage systems, interlock switches, door 2. -
Page 25: Troubleshooting Procedures
Troubleshooting Procedures "PLEASE TOUCH TIME 1. Check power supply. OF DAY" does not 2. Check fuse. appear in the display, 3. Check oven thermostat. when unit is plugged in. Measure voltage between pin 1 and pin 3 of CN1 connector Replace Is 120 volts circuit... - Page 26 Troubleshooting Procedures Measure resistance Display does not count of CN2 between pin down when START is 1 and pin 3 with door pressed. closed. Verify proper Is continuity connection of indicated. ribbon connector. Does ribbon connector have proper connection. Adjust or replace door Reconnect sensing...
- Page 27 Troubleshooting Procedures Display does not count Check if fan motor down whem START pad operates when is pressed. START is pressed. Does fan Measure motor operate resistance of when START high voltage is pressed. Does capacitor capacitor. have correct resistance. Refer to Testing Procedures on page 21.
- Page 28 Troubleshooting Procedures Unit does not heat even if display counts down Check the contacts when START pad is of RY2 relay. pressed for high power. Does relay Verify proper contacts connection of measure correct ribbon resistance. connector. Does ribbon connector have proper Replace connection.
- Page 29 Troubleshooting Procedures Ventilation fan does not Measure resistance operate when FAN of magnetron HIGH/LOW pad is thermal fuse and pressed. oven thermostat. Does magnetron Verify proper Does ribbon thermal fuse and connection of connector oven thermostat ribbon have proper have the correct connector.
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Page 30: Disassembly Procedures
Disassembly Procedures To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. High voltage is present at the high voltage terminal of Door Removal the high voltage transformer during any cooking cycle. 1. -
Page 31: Control Panel
Disassembly Procedures To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. NOTE: When replacing door handle, the bottom portion of the door handle must be inserted first. 7. -
Page 32: Control Key Panel
Disassembly Procedures To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Control Key Panel Removal P.C. Board Removal 1. Disconnect power to oven. 1. Disconnect oven power and remove grille, (see 2. -
Page 33: Stirrer Assembly
Disassembly Procedures To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Stirrer Assembly Stirrer Motor (MVH240 and MVH340) Motor driven antenna assembly is located at the top of 1. -
Page 34: Interlock Door Latch Switches
Disassembly Procedures To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Interlock Door Latch Switches CAUTION Primary switch is operated by bottom latch pawl. Before replacing a blown monitor fuse, test the Interlock Switch Removal primary interlock switch, secondary interlock switch, 1. -
Page 35: High Voltage Capacitor
Disassembly Procedures To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Diode The diode is located next to the high voltage capacitor. 1. Disconnect power to oven and remove control panel, (see "Control Panel"... -
Page 36: Magnetron
Disassembly Procedures To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Magnetron CAUTION Magnetron is mounted on the side of the cavity to provide a top feed single waveguide. During replacement of magnetron, be certain the R.F. -
Page 37: Humidity Sensor
Disassembly Procedures To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Humidity Sensor Base Thermostat The sensor is a plug-in device located in the air exhaust The base thermostat is located behind the control panel assembly. -
Page 38: Turntable Motor
Disassembly Procedures To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Turntable Motor Vent Blower 1. Disconnect power to oven. Vent blower is a two speed (HI-LOW) capacitor run 2. -
Page 39: Wiring Diagrams And Schematics
Wiring Diagram and Schematic To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. SINGLE PHASE AC 120V * NOTE ONLY 60Hz 1. DOOR OPENED & COOK OFF MODE. 2. - Page 40 Wiring Diagram and Schematic To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. SINGLE PHASE AC 120V * NOTE ONLY 60Hz 1. DOOR OPENED & COOK OFF MODE. 2.
- Page 41 Programming Instructions for MVH140 Appendix A A–1 RS21000005 Rev. 0...
- Page 42 Programming Instructions for MVH140 Control Panel DISPLAY: The display includes a clock and indicators to tell you time of day, cooking time settings, and cooking functions selected. POPCORN: Touch this pad when popping popcorn in your microwave oven. POTATO: Touch this pad to cook from 1 to 4 potatoes.
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Page 43: Vent Hi/Low/Off
Programming Instructions for MVH140 This section discusses the concepts behind microwave Vent HI-LOW-OFF cooking and introduces the basic need to operate the The vent moves steam and other vapors from the microwave oven. Please read this information before surface cooking area. using. - Page 44 Programming Instructions for MVH140 Hold Warm Cooking With More Than One Cook Cycle Allows cooked food to stay warm in the microwave oven Some recipes call for one power level for a certain for up to 99 minutes and 99 seconds. HOLD WARM can length of time, and another power level for another also be used by itself or to follow a cooking cycle length of time.
- Page 45 Programming Instructions for MVH140 Cooking Guide for Lower Power Levels The 11 power levels including HIGH, allows the operator to choose the best power level for cooking the food. Below is all the power levels listed, examples of foods best cooked at each level, and the amount of microwave power recommended.
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Page 46: Popcorn
Programming Instructions for MVH140 Popcorn 3. Enter the quantity/serving of food being cooked. When the cook time has ended, three beeps will Popcorn pad allows 1.75, 3.0, and 3.5 ounce bags of sound and “END” will appear in the display. commercially packaged microwave popcorn options. - Page 47 Programming Instructions for MVH140 Cooking Guide for Auto Cook Code Category Quantity Directions Fresh 1 cup vegetables and 2 Place in microwavable bowl or casserole. Vegetable tbsp. water Add water according to the quantity. Cover with plastic wrap and vent. Let stand 5 minutes.
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Page 48: Auto Defrost
Programming Instructions for MVH140 Auto Defrost Defrosting Tips This microwave oven is preset with three defrost 1. When using AUTO DEFROST cycle, the weight sequences. Using auto defrost is the best way to defrost being entered is the net weight in pounds and tenths frozen foods. - Page 49 Programming Instructions for MVH140 Auto Defrost Charts Meat Category Food Setting At Beep Special Instructions Beef Meat of irregular shape and large, fatty cuts of meat should have the narrow or fatty areas shielded with foil at the beginning of a defrost sequence. Ground Beef, MEAT Remove thawed portions with...
- Page 50 Programming Instructions for MVH140 Poultry Category Food Setting At Beep Special Instructions Chicken Whole (up to 9½ POULTRY Turn over (finish defrosting Place chicken breast-side up on a lbs.) breast-side down). Cover microwavable roast rack. Finish warm areas with aluminum defrosting by immersing in cold foil.
- Page 51 Programming Instructions for MVH240 Appendix B B–1 RS21000005 Rev. 0...
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Page 52: Kitchen Timer
Programming Instructions for MVH240 Control Panel DISPLAY: The display includes a clock and indicators to tell you time of day, cooking time settings, and cooking functions selected. POPCORN: Touch this pad when popping popcorn in your microwave oven. POTATO: Touch this pad to cook from 1 to 4 potatoes. BEVERAGE: Touch this pad to reheat one or two cups of a beverage. - Page 53 Programming Instructions for MVH240 Vent HI-LOW-OFF This section discusses the concepts behind microwave cooking and introduces the basic need to operate the The vent moves steam and other vapors from the microwave oven. Please read this information before surface cooking area. using.
- Page 54 Programming Instructions for MVH240 Child Lock Favorite Recipe Control panel can be locked out to prevent the Favorite recipe allows recall of cooking instruction microwave from being accidentally started or used by previously placed in memory and begins cooking. children. Child lock feature is also useful when cleaning 1.
- Page 55 Programming Instructions for MVH240 Cooking Guide for Lower Power Levels The 11 power levels including HIGH, allows the operator to choose the best power level for cooking the food. Below is all the power levels listed, examples of foods best cooked at each level, and the amount of microwave power recommended.
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Page 56: Auto Cook
Programming Instructions for MVH240 Popcorn Auto Cook Popcorn pad allows 1.75, 3.0, and 3.5 ounce bags of Auto cook provides four preset categories for cooking. commercially packaged microwave popcorn options. 1. Press AUTO COOK pad. • Pop only one package of popcorn at a time. 2. -
Page 57: Cooking Guide For Auto Cook
Programming Instructions for MVH240 Cooking Guide for Auto Cook Code Category Quantity Directions Fresh 1 cup vegetables and 2 Place in microwavable bowl or casserole. Vegetable tbsp water Add water according to the quantity. Cover with plastic wrap and vent. Let stand 5 minutes. -
Page 58: Auto Defrost
Programming Instructions for MVH240 Auto Defrost Defrosting Tips This microwave oven is preset with three defrost 1. When using AUTO DEFROST cycle, the weight sequences. Using auto defrost is the best way to defrost being entered is the net weight in pounds and tenths frozen foods. - Page 59 Programming Instructions for MVH240 Auto Defrost Charts Meat Category Food Setting At Beep Special Instructions Beef Meat of irregular shape and large, fatty cuts of meat should have the narrow or fatty areas shielded with foil at the beginning of a defrost sequence. Ground Beef, MEAT Remove thawed portions with...
- Page 60 Programming Instructions for MVH240 Poultry Category Food Setting At Beep Special Instructions Chicken Whole (up to 9½ POULTRY Turn over (finish defrosting Place chicken breast-side up on a lbs.) breast-side down). Cover microwavable roast rack. Finish warm areas with aluminum defrosting by immersing in cold foil.
- Page 61 Programming Instructions for MVH340 Appendix C C–1 RS21000005 Rev. 0...
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Page 62: Kitchen Timer
Programming Instructions for MVH340 Control Panel POTATO: Touch this pad to cook potatoes. The oven’s sensor will tell the oven how long to cook depending on the amount of humidity it detects from the potato. COOK: Touch this pad to cook frozen entree, casserole, and rice. -
Page 63: Vent Hi/Low/Off
Programming Instructions for MVH340 Control Set-Up START: Touch this pad to start a function. If you open the door The following default values can be changed; beep after oven begins to cook, touch sound, clock, display speed, defrost weight, and demo START again. -
Page 64: Auto Defrost
Programming Instructions for MVH340 Light HI-LOW-OFF Hold Warm • Press LIGHT once for bright light, twice for night light, Allows cooked food to stay warm in the microwave oven or three times to turn the light off. for up to 99 minutes and 99 seconds. HOLD WARM can also be used by itself or to follow a cooking cycle automatically. - Page 65 Programming Instructions for MVH340 Cooking at Lower Power Levels Cooking With More Than One Cook Cycle Cooking with HIGH power level does not always give the Some recipes call for one power level for a certain best results with foods that is needed for slower length of time, and another power level for another cooking, such as roasts, baked goods, or custards.
- Page 66 Programming Instructions for MVH340 Sensor Operating Instructions Popcorn Sensor cook allows cooking of favorite foods without Popcorn pad allows consumer to pop commercially selecting cooking times and power levels. The display packaged microwave popcorn. will indicate SENSING during the initial sensing period. NOTES: The oven automatically determines required cooking •...
- Page 67 Programming Instructions for MVH340 Cook Auto Defrost Using COOK pad allows consumer to heat common This microwave oven is preset with three defrost microwave prepared foods without needing to program sequences. Using auto defrost is the best way to defrost times and power level.
- Page 68 Programming Instructions for MVH340 Defrosting Tips 1. When using AUTO DEFROST cycle, the weight being entered is the net weight in pounds and tenths of pounds (the weight of the food minus the con- tainer). 2. Use AUTO DEFROST cycle only for raw food. Auto defrost obtains the best results when food is a minimum of 0°F, (taken directly from a freezer).
- Page 69 Programming Instructions for MVH340 Auto Defrost Charts Meat Category Food Setting At Beep Special Instructions Beef Meat of irregular shape and large, fatty cuts of meat should have the narrow or fatty areas shielded with foil at the beginning of a defrost sequence. Ground Beef, MEAT Remove thawed portions with...
- Page 70 Programming Instructions for MVH340 Poultry Category Food Setting At Beep Special Instructions Chicken Whole (up to 9½ POULTRY Turn over (finish defrosting Place chicken breast-side up on a lbs.) breast-side down). Cover microwavable roast rack. Finish warm areas with aluminum defrosting by immersing in cold foil.
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