Amana AMH20 Service Manual

Commercial combination/ convection microwave oven

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Service

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.

Commercial

Combination/

Convection

Microwave

Oven

MENUMASTER

C O M M E R C I A L

This Base Manual covers general information

Refer to individual Technical Sheet

for information on specific models

This manual includes, but is

not limited to the following:

60 HZ Models

AMH20

AMH202

AMH20D

JBH202

SZH20

50 HZ Models

AMH20A2

AMH20AD2 P1332504M

MMH20AD2 P1332505M

M I C R O W A V E

O V E N

P1330801M

P1331101M

P1332501M

P1331102M

P1331104M

P1331103M

P1332506M

P1332507M

16023463

November 2006

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Chapters

Table of Contents

Summary of Contents for Amana AMH20

Page 1: Microwave Oven
This Base Manual covers general information Refer to individual Technical Sheet for information on specific models Combination/ This manual includes, but is not limited to the following: 60 HZ Models Convection AMH20 P1330801M AMH202 P1331101M Microwave AMH20D P1332501M JBH202 P1331102M...
Page 2: Important Information
Important Information Important Notices for Servicers and Consumers Maytag will not be responsible for personal injury or property damage from improper service procedures. Pride and workmanship go into every product to provide our customers with quality products. It is possible, however, that during its lifetime a product may require service.
Page 3: Table Of Contents
Table of Contents Important Information ............ 2 Side Touch Panel Assembly ........28 Important Safety Information ......... 4 Display Module ............28 Grounding Instructions ..........7 Heating Elements (oven top) ........28 Servicing of Grounded Products ......... 8 Inlet Duct Assembly ..........28 Wiring ................
Page 4: Important Safety Information
Read the following information to avoid possible exposure to microwave radiation: The basic design of the Amana Microwave Oven makes it an inherently safe device to both use and service. However, there are some precautions which should be followed when servicing the Radarange to maintain this safety.
Page 5: Grounding Instructions
Important Safety Information Recognize this symbol as a SAFETY message WARNING When using electrical equipment, basic safety precautions should be followed to reduce the risk of burns, electrical shock, fire, or injury to persons. 1. READ all instructions before using equipment. 8.
Page 6: Precautions To Avoid Possible Exposure
Important Safety Information CAUTION To avoid risk of personal injury or property damage, observe the following: 1. Briskly stir or pour liquids before heating with 7. Do not use regular cooking thermometers in oven. microwave energy to prevent spontaneous boiling Most cooking thermometers contain mercury and or eruption.
Page 7: Grounding Instructions
Important Safety Information Grounding Instructions WARNING WARNING Precautions to be observed before and during servicing to avoid possible exposure to excessive Do not remove grounding prong when installing microwave energy, or electrical shock disconnect grounded appliance in a home or business that does power to oven.
Page 8: Servicing Of Grounded Products
Important Safety Information Servicing of Grounded Products Explanation The standard accepted color coding for grounding wires Polarization–This means that the larger slot must be is GREEN or GREEN WITH YELLOW STRIPE. These neutral and the small slot must be hot (live). ground leads are NOT to be used as current carrying Mispolarized–The outlet is miswired so that the larger slot conductors.
Page 9: General Information
Model Identification • Do not install oven next to or above source of heat, • For Amana product call 1-866-426-2621 or visit the such as pizza oven or deep fat fryer. This could Web Site at www.amanacommercial.com cause microwave oven to operate improperly and When contacting for service support, provide product could shorten life of electrical parts.
Page 10: Troubleshooting Procedures
60 Hz Troubleshooting Procedures W ARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. Stand By Condition SCHEMATIC CONDITION: DOOR CLOSED 208/230V 60HZ CONTROL/TEMPERATURE CONVECTION (FUSE 2) MICROWAVE (FUSE 1) UPPER SPEAKER...
Page 11: Maytag Services
60 Hz Troubleshooting Procedures W ARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. Pre-Heat Condition SCHEMATIC CONDITION: DOOR CLOSED 208/230V 60HZ CONTROL/TEMPERATURE CONVECTION (FUSE 2) MICROWAVE (FUSE 1) UPPER SPEAKER...
Page 12: Cook Condition
60 Hz Troubleshooting Procedures W ARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. Cook Condition SCHEMATIC CONDITION: DOOR CLOSED 208/230V 60HZ CONTROL/TEMPERATURE CONVECTION (FUSE 2) MICROWAVE (FUSE 1) UPPER SPEAKER...
Page 13 50 Hz Troubleshooting Procedures W ARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. Stand-By Condition 16023463 ©2006 Maytag Services...
Page 14 50 Hz Troubleshooting Procedures W ARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. Pre Heat Condition 16023463 ©2006 Maytag Services...
Page 15 50 Hz Troubleshooting Procedures W ARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. Cook Condition 16023463 ©2006 Maytag Services...
Page 16: Component Testing Procedures
Component Testing Procedures W ARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. Illustration Component Test Results Thermal cutout Disconnect all wires from TCO. Measure resistance across terminals. Control TCO ..........
Page 17 Component Testing Procedures W ARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. Illustration Component Test Results Halfwave board Measure voltage across terminals: With Convection on: 60 HZ Models only E5 to MTR ...........
Page 18 Component Testing Procedures W ARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. Illustration Component Test Results Cavity heating element Disconnect wires from terminals. Measure resistance across heating element (900 W) ........
Page 19: Component Testing Procedures
Component Testing Procedures W ARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. H.V. Board Pin 1 Pin 1 Pin 1 Pin 28 Pin 50 Pin 1 Pin 1 Pin 1...
Page 20: Power Test
To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. All Amana and Menumaster microwave oven power outputs are rated using the IEC705 standards. Using the IEC705 test method requires precision measurements and equipment that is not practical to be performed in the field.
Page 21: Convection Temperature Test And Calibration
Convection Temperature Test and Calibration W ARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. Convection Temperature Calibration Convection Temperature Test NOTE: It is absolutely necessary to own and use a NOTE: It is normal for the average oven temperature thermocouple type oven tester to accurately to vary from the oven setting by as much as...
Page 22: Display Diagnostic
Display Diagnostics W ARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. CAUTION All repairs as described in this troubleshooting section are to be performed only after the caution procedures one through eight listed below have been followed.
Page 23: Service Test
Service Test W ARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. Service Test Putting the oven into Service Test allows you to individually diagnose individual components of the oven, as well as access the Tube Hours and Door Cycles the oven has experienced.
Page 24: Service Functions
Service Functions W ARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. Action Display Description For Pads 1 – 3, Display shows amps being drawn. Press pad once to turn on.
Page 25 Service Functions W ARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. Action Display Description Mag Hours (241 shown in this example) LEVEL Door Cycles (13,895 shown in this example) LEVEL...
Page 26: Door Handle
Disassembly WARNING To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Door Handle Inner Door Remove door handle by removing plastic plugs to gain Assembly access to set screws. Loosen set screws using a Outer (3/32 inch allen screws), one located to the left of the Insulation...
Page 27: Outer Case
Disassembly WARNING To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Outer Case Interlock Switch Module 1. Remove screws securing outer flue, located on the 1. See “Component Location” Figure 2, for location. back of the unit.
Page 28: Rtd (Resistance Thermal Device)
Disassembly WARNING To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. RTD (Resistance Thermal Device) 1. See “Component Location” Figure 3, page 53. 2. Remove outer case, see “Outer Case” procedure. 3.
Page 29: Control Board Assembly Bracket
Disassembly WARNING To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Auto Transformer (60 Hz Models Only) Control Board Assembly Bracket 1. Remove back panel, see “Back Panel” procedure 1.
Page 30: Magnetron, Control, And Fan Thermal Cutouts (Tco)
Disassembly WARNING To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Magnetron, Control, and Fan Thermal Cutouts (TCO) Blade 1. See figures 4 and 5, page 34, for location. 2.
Page 31: Capacitor / Diode
Disassembly WARNING To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Capacitor / Diode Thermal Limiter 1. See figure 3, page 33 for location. 1. See figure 3, page 33 for location. 2.
Page 32: Component Location
Disassembly WARNING To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Component Location Display Module Touch Panel (Top) Guide Touch Racks Panel (Side) Figure 1 Touch Panels/ Displays/Triacs Plenum Screw Cavity...
Page 33 Disassembly WARNING To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Inlet Duct RTD Temperature Convection Assembly Sensor Motor Thermal Halfwave Limiter Board (60 Hz Models) Blower Speaker Board...
Page 34 Disassembly WARNING To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Earlier Production Later Production Antenna Antenna Motor Motor Control Retainer Retainer Clips Clips Gears Gears Figure 4 Antenna Assembly Convection...
Page 36: Owner's Manual
Owner's Manual Contents Model Identification ........2 RECAUTIONS TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE ......MICROWAVE ENERGY ..MPORTANT SAFETY INSTRUCTIONS High Speed Commercial Grounding Instructions ......5 Combination Oven Installation ..........5 Display and Features ......... 6 Keep these instructions for future Cooking and Toasting .........
Page 37: Model Identification
Model Identification When contacting Amana, provide product information. Any questions or to locate an authorized Amana servicer, Product information is located on oven serial plate. call toll free 1-866-426-2621 inside the U.S.A. or Canada, Record the following information: or 1-319-622-5511 outside the U.S.A. or Canada.
Page 38: Precautions To Avoid Possible
IMPORTANT SAFETY INSTRUCTIONS Recognize this symbol as a SAFETY message WARNING When using electrical equipment, basic safety precautions should be followed to reduce the risk of burns, electrical shock, fire, or injury to persons. 1. READ all instructions before using equipment. examination, repair, or adjustment.
Page 39 IMPORTANT SAFETY INSTRUCTIONS WARNING WARNING To avoid risk of fire in the oven cavity: Liquids such as water, coffee, or tea are able to be overheated beyond the boiling point without appearing a. DO NOT overcook food. Carefully attend oven to be boiling due to surface tension of the liquid.
Page 40: Installation
Installation Unpacking Oven WARNING • Inspect oven for damage such as dents in door or inside oven cavity. • Report any dents or breakage to source of purchase immediately. To avoid risk of electrical shock Do not attempt to use oven if damaged. or death, this oven must be •...
Page 41: Display And Features
Display and Features F—Discharge Air Vent A—Oven Door Handle G—Air Intake Filter (Lift to open.) H—Exhaust Flue B—Door Shield I—Unit Spacing Guide C—Top Control Panel J—Power Cord D—Display E—Side Control Panel Oven Features ITEM flashes in display indicating keypads can Temperature is displayed in the Display be used and cooking entries can be made.
Page 42 Display and Features (cont’d) Displays stage the oven is cooking in during multi-stage cooking programs. POWER Displays ITEM programmed ITEM digit pad selected COOK by user. LEVEL Convection cooking only. Displays when changing heater setting. Press and hold TEMP ENTRY to display. POWER ITEM COOK...
Page 43 Display and Features (cont’d) Cooking Display DISPLAYS DESCRIPTION START Pad PREHEAT PREHEAT READY displays when oven has Press the START reached preheat temperature and is ready to cook. READY pad to restart a cooking cycle that Displays cooking time. If stage cooking is 00:00 was interrupted.
Page 44: Using The Oven Control
Using the Oven Control CAUTION To avoid risk of burns, handle utensils, accessories, and door with care. Allow oven, utensils, and accessories to cool before cleaning. Oven, utensils, and accessories become hot during operation. Cooking with Preprogrammed Pads This combination oven has been programmed in the factory for all the food that will need The keypad to be cooked and prepared.
Page 45: Programming The Oven
Programming the Oven Programming Items 1. Oven must be ON. • Press PREHEAT ON/OFF. • ITEM must flash in display. If not, open and close oven door. 2. Press PROGRAM SAVE. 3. Press pad to be programmed or reprogrammed. 4. Press TIME ENTRY to program amount of cooking time. •...
Page 46: User Options
CLEAN FILTR every 7 days. When the message displays, To change options, STANDBY must display. If STANDBY is not Amana recommends cleaning the air displayed, press PREHEAT ON/OFF pad. filter thoroughly. Cleaning the air 1. Press HIDDEN pad. filter will not shut off the •...
Page 47: Care And Cleaning
Care and Cleaning Clean oven frequently to maximize oven life, performance, and efficiency. A dirty oven cooks inefficiently because moisture, spills, and grease absorb convection and microwave energy. WARNING CAUTION To avoid electrical shock which To prevent burns, handle utensils, accessories, and can cause severe personal injury door with care.
Page 48 Care and Cleaning (cont’d) CATALYST DEACTIVATION & POISONING AGENTS The following partial list of poisoning agents and inhibitors have been found to have a detrimental effect on the activity of the noble metal catalyst. Optimum life and performance of the catalyst requires that exposure to these substances must be avoided.
Page 49: Service Codes
2. If service code reappears, write down the service code displayed and contact the nearest authorized Amana servicer. • Do not use oven until contacting the authorized Amana servicer or call Amana toll free at 1-866-426-2621 inside the U.S.A. or Canada.
Page 50 User Options Numbered Pads Display Options (Factory Settings in Bold) OP:10 Allows 10 (0-9) preprogrammed digit pads. Preprogrammed Pads OP:11 Allows 100 (00-99) preprogrammed digit pads. OP:20 Manual time entry/cooking not allowed Manual Time Entry OP:21 Manual time entry/cooking allowed OP:30 Opening oven door does not reset oven back to ready mode Reset to READY mode...
Page 52: Quick Start Reference Guide
Quick Refence Guide Quick Start Reference Guide Refer to Product Safety Manual for Safety Statements High Speed Commercial Combination Oven Complete Owner’s Manual available online So...how do I use it? Preprogrammed Pads Oven Clearances o cook food using preprogrammed pads. A—Allow at least 2"...
Page 53 OP:A0 Use at an elevation below 5,000 ft. Altitude Adjustment OP:A1 Use at an elevation of 5,000 ft. or above Part No. 12878401 © 2004 Amana Commercial Products Printed in U.S.A. 06/04 Amana, Iowa 52204 16023463 B–3 ©2006 Maytag Services...

This manual is also suitable for:

P1331101m Amh20d P1332501m P1330801m Jbh202 P1331102m ... Show all

Amana AMH20 Service Manual

Table of Contents

Owner's Manual

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Related Manuals for Amana AMH20

Summary of Contents for Amana AMH20

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