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This Base Manual covers all

Commerical Combination/Convection

Microwave Ovens with 230/208 V, 60 Hz.

Refer to individual Technical Sheet
for information on specific models.

RS2220002

Revision 0

November 2000

Service

Commercial Combination/
Convection Microwave
Oven with 230/208 V, 60 Hz

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.

Service Manual for
Amana

ACE208
ACE230

Содержание ACE208

Страница 1: ...models RS2220002 Revision 0 November2000 Service Commercial Combination Convection Microwave Oven with 230 208 V 60 Hz 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 Service Manual for Amana ACE208 ACE230 ...

Страница 2: ...d during servicing to avoid possible exposure to excessive microwave energy or electrical shock disconnect power to oven Do not operate or allow oven to be operated with door open Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source and make repairs as necessary Interlock operation Proper door closing Seal and sealing surfaces arcin...

Страница 3: ...ions 16 User Maintenance Replacing Oven Light 17 Moving Oven Rack Guides 17 Service Codes 17 Specifications 18 Component Testing Procedures 19 Test Modes Microwave Power Test 23 Temperature Chart 23 Convection Temperature Test 24 Convection Temperature Calibration 24 Radiation Leakage Testing 25 Equipment 25 Procedure For Measuring Radiation Leakage 25 Measurement With the Outer Panel Removed 25 M...

Страница 4: ... property damage from improper service procedures If prefroming service on your own product assume responsibility for any personal injury or property damage which may result To locate an authorized servicer please consult your telephone book or the dealer from whom you purchased this product For further assistance please contact CONSUMER AFFAIRS DEPT OR 1 319 622 5511 AMANA REFRIGERATION INC CALL ...

Страница 5: ... reason for this action at any time nor will it be condoned by Amana 9 Microwave oven should never be operated with Important Safety Information Any components removed and or bypassed Any of the safety interlocks are found to be defective Any of the seal surfaces are defective missing or damaged 10 To ensure that unit does not emit excessive microwave leakage and to meet Department of Health and H...

Страница 6: ... with microwave energy When skin is pierced steam escapes evenly 5 Pop popcorn in microwave mode only If equipment is preheated or hot allow equipment to cool before popping popcorn or bag may ignite 7 Do not use regular cooking thermometers in equipment when cooking in microwave or combination mode Most cooking thermometers contain mercury and may cause an electrical arc malfunction or damage to ...

Страница 7: ...h voltage transformer is used in this unit which supplies high voltage A C for operation of the magnetron tube High Voltage Capacitor Doubles the A C output voltage from the high voltage transformer High Voltage Diode Rectifier Is connected at the output side of the high voltage capacitor It changes voltage from A C to D C It passes current in one direction and blocks it in the other Also called a...

Страница 8: ...quired and fuses can be blown NEMA 6 20R 250V 20AMP Unpacking Oven Inspect oven for damage such as dents in door or inside oven cavity Report any dents or breakage to source of purchase immediately Do not attempt to use oven if damaged Remove all materials from oven interior If oven has been stored in extremely cold area wait a few hours before connecting power Radio Interference Microwave operati...

Страница 9: ...e type cleaning systems Remove excess water from cloth before wiping oven Cleaning Oven Cavity Remove racks and rack guides for best results Recommended cleaning solution is Convection Express Cleaner Repeat cleaning several times if necessary Saturate oven interior surfaces with Amana Convection Express Cleaner and let sit for 2 to 5 minutes Rub vigorously with nylon scouring pad to loosen debris...

Страница 10: ...ed and cooking entries can be made Temperature is displayed in the time field Preheat not ready indicates the oven is not at preheat temperature NOT flashes while the oven heats to preheat temperature 450F STG COOK LEVEL PREHEAT NOT READY STANDBY ITEM POWER C M 88 8 1 2 3 4 Display D Display E Side Control Panel G Air Intake Filter Oven Features A B C D E G ...

Страница 11: ...23 8 1 2 3 4 STG COOK LEVEL PREHEAT NOT READY STANDBY ITEM POWER C M 8 8 23 8 9 1 2 3 4 5 45 Item is not displayed indicating keypad will not accept entries To activate keypad open and close oven door Item will then display Convection cooking only Combination cooking both convection C and microwave energy M are used Cook level displays with the amount of microwave energy used Time left in cooking ...

Страница 12: ...g condition can be started or programmed STG STG displays with a single number This is the stage the oven is at in the cooking condition STANDBY STANDBY displays when oven is turned off and also after the oven is plugged in the door is opened and then shut C M C M displays when oven is convection cooking C M C M displays when oven is cooking using both microwave energy and convection POWER POWER d...

Страница 13: ... can be programmed 8 Press PROGRAM SAVE to save the program and changes 9 To discard changes press STOP RESET before pressing PROGRAM SAVE STAGE PROGRAM SAVE Programming Pads Oven is shipped from the factory for single pad programming To change the oven default to double pad programming see User Option section To program the amount of time power level or temperature setting for a pad 1 Oven must b...

Страница 14: ...ADY displays To change preheat settings see Programming 2 Oven reaches preheat temperature Signal sounds and PREHEAT READY displays 3 Press selected pad ITEM must be flashing in display If not open and close door If using single pad programming press pad and oven begins automatically For double pad programming press pads in proper sequence and oven begins automatically 4 Cooking cycle begins Total...

Страница 15: ...lashing To change the preheat temperature see Programming 2 Oven reaches preheat temperature Signal sounds and PREHEAT READY displays 3 Press TIME Enter desired cooking time by using numeric keypad 4 Press TEMP if cooking temperature differs from preheat temperature Enter the new temperature 5 Press POWER LEVEL To have microwave power on HIGH press the POWER LEVEL pad again H displays For a lower ...

Страница 16: ...an option Pressing the STOP RESET pad will not save changes Numbered Pads Display Options Factory Settings in Bold 1 Preprogrammed Pads OP 10 OP 11 Allows 10 0 9 preprogrammed pads Allows 100 00 99 preprogrammed pads 2 Manual Time Entry OP 20 OP 21 Manual time entry cooking not allowed Manual time entry cooking allowed 3 Reset to READY mode OP 30 OP 31 Opening oven door does not reset oven back to...

Страница 17: ...yed and contact the nearest authorized Amana Servicer Do not use oven until contacting the Amana Servicer Moving Oven Rack Guides The oven rack guides can be moved to one of three positions within the oven allowing for versatility in cooking and placement of food The middle rack position is the most common Guides can also be removed for easier cleaning To remove rack guides 1 Oven cavity must be c...

Страница 18: ...nergy IEC705 1000 Watts Power Consumption Combination 3300 watts Convection only 2700 watts Power Cord Length 5 6 168 cm Oven Cavity Dimensions inches cm 13 33 cm x 10 27 cm x 15 38 cm Net Weight 112lbs 51 kg Oven Cavity Capacity 1 2 Cu Ft 34 L Receptacle and plug NEMA 6 20R Product specifications can change at any time without notice 19 1 4 or 49 cm 18 or 46 cm 21 1 8 or 54 cm 38 1 4 or 97 cm ...

Страница 19: ... 15 Ω then reverse meter leads 30 Ω Infinite Infinite Triac 1 top is for front element Triac 2 middle is for rear element Triac 3 bottom is for microwave Measure voltage from MT1 to Gate 0 8 VAC when energized If no voltage check H V board and wiring Capacitor Discharge Capacitor Remove wires from capacitor terminals and connect ohmmeter set on highest resistance scale to terminals Also check betw...

Страница 20: ... Monitor Disconnect wires to switch With door open measure resistance from Terminal 2 to 3 Terminal 4 to 5 Terminal 7 to 8 With door closed measure resistance from Terminal 2 to 3 Terminal 4 to 5 Terminal 7 to 8 Infinite Infinite Indicates continuity Indicates continuity Indicates continuity Infinite A B Convection blower motor Remove wires from motor Measure resistance across terminals A and B Ap...

Страница 21: ...nuity Continuity Top touch panel Continuity is indicated as 100 Ω and below 1 Pad Preheat Time Temp Power Level Stage Program Save Hidden Pad Trace 3 4 5 7 7 8 5 8 5 9 6 7 8 9 Measurement Continuity Continuity Continuity Continuity Continuity Continuity Continuity Wire harness High voltage board to display module harness Test continuity of wires Indicates continuity Display board J1 J5 J6 J4 Pin 1...

Страница 22: ...connect J5 connector Volts J5 pin 28 J5 pin 50 24 VDC NOTE For the following test place oven in Service Test Mode see page 27 Relay Function Test Set Up Meter Setting Probe Placement Results K1 Cooling fan Disconnect J2 connector Ohms J1 pin 1 Black wire J2 pin 4 Test mode 5 off no continuity Test mode 5 on 1 Ω K2 Convection motor Disconnect J2 connector Ohms J1 pin 1 Black wire J2 pin 3 Test mode...

Страница 23: ...of the oven rack and heat the water for 62 seconds a Close the door b Press Hidden Pad 1 3 5 7 9 c Press 3 to activate microwave mode d Display counts up to 62 seconds and unit shuts off e Open the door 5 Stir the water measure and record the temperature of the water after heating time is completed 6 Subtract the starting water temperature Step 3 from the ending water temperature Step 5 to obtain ...

Страница 24: ...ycle 2 439 F 461 F 879 F 921 F 1800 F 1800 F 4 450 F average temperature If the average temperature is too high or too low the oven temperature offset needs to be calibrated Convection Temperature Calibration NOTE It is normal for the average oven temperature to vary from the oven setting by as much as 25 F Difference will not effect cooking since recipes are written with this difference in mind C...

Страница 25: ...kage reading must be recorded on the service repair ticket while at the customer s location Equipment Electromagnetic radiation monitor 600 cc glass beaker Procedure For Measuring Radiation Leakage Note before measuring Do not exceed meter full scale deflection Leak monitor should initially be set to the highest scale To prevent false readings the test probe should be held by the grip portion of t...

Страница 26: ...E Before scheduling service for any error codes instruct customer to unplug oven for 1 minute reconnect power and retest If unit operates properly no service call is required Display Description Corrective Action Err1 Checksum Error See note above Replace H V board Err2 Hardware Problem See note above Verify wiring at H V board If wiring is good replace H V board Err3 Hardware Problem See note abo...

Страница 27: ...nit shuts off STG COOK PREHEAT STANDBY ITEM POWER C M 1 2 3 4 QTY LEVEL NOT READY LMT Component Evaluation STG COOK PREHEAT STANDBY ITEM POWER C M 1 2 3 4 QTY LEVEL NOT READY LMT 0 Deactivated 1 Activated Displays actual Amperage Displays actual Amperage Indicates Service Mode If no Amperage check Heating element Triac 2 middle H V board relay K9 and triac 2 drive voltage Wiring If no Amperage che...

Страница 28: ...LMT LMT LMT LMT LMT 6 7 8 9 0 Toggles Oven Light ON OFF Displays of Magnetron Hours Displays of Door Cycles with a 1 to 1 ratio rounded to the nearest ten Clears Hours and Cycles press START to activate Resets to 0 Displays current Temperature OFFSET TEMP Display current oven Temperature as sensed by RTD Press Display Component Evaluation STG COOK PREHEAT STANDBY ITEM POWER C M 1 2 3 4 QTY LEVEL N...

Страница 29: ...tion Preheat Convection Condition NO NO Error Code Error Code Appears Proceed to DISPLAY DIAGNOSTICS STG COOK PREHEAT STANDBY ITEM POWER C M 1 2 3 4 QTY LEVEL NOT READY LMT PREHEAT ON OFF STG COOK PREHEAT STANDBY ITEM POWER C M 1 2 3 4 QTY LEVEL NOT READY LMT FLASHES until unit reaches PREHEAT temperature FLASHES for 1 minute 1 Binding or inoperative blower motor 2 Inoperative cavity light 3 Inope...

Страница 30: ...n No Heat 3 Inoperative triac 4 Inoperative diode 5 Inoperative capacitor 6 Inoperative H V transformer 7 Inoperative magnetron 1 Inoperative top touch panel 2 Inoperative side touch panel 3 Inoperative H V board 4 Broken or loose wire connection Press interlock switch module 1 Inoperative or misadjusted interlock switch module PREHEAT ON OFF TIME TEMP POWER LEVEL enter desired time enter 150 F en...

Страница 31: ...or against oven on the hinge side and tighten side hinge mounting screws in the sequence shown below 1 2 3 4 Door Handle Remove door handle by removing plactic plugs to gain access to set screws Loosen set screws using a 3 32 inch allen screws one located to the left of the door handle and one located on the bottom of the door handle Pointed tip Flat tip Plastic plugs Tighten first NOTE When repla...

Страница 32: ...ull gently towards front of unit to release cover 5 Replace stirrer cover by fitting stirrer blade on stirrer insert Place back of stirrer cover into place align stirrer insert onto stirrer shaft Lift front of cover into position rotate mounting clip into position tighten screw CAUTION If mounting clip is loose arcing will occur Stirrer Shaft Stirrer Blade Stirrer Insert Stirrer Cover Stirrer Cove...

Страница 33: ...en pull back on interlock assembly until door is snug against front oven cavity and tighten bottom screw first then top screw 4 Door will remain latched when proper adjustment is made NOTE If door is not properly adjusted display will indicate DOOR when the door is closed Side Touch Panel Assembly 1 See Component Location Figure 1 for location 2 Remove outer case 3 Remove ribbon cable from display...

Страница 34: ...mounting magnetron in place NOTE Place front magnetron cover bracket in place before securing magnetron Magnetron Control and Fan Thermal Cutout TCO 1 See Component Location Figure 3 for location 2 Remove outer case 3 Remove wiring from selected thermal cutout 4 Remove screws securing thermal cutout 5 Reassemble thermal cutout in reverse order Triacs 1 See Component Location Figure 1 for location ...

Страница 35: ...et mounting screw 5 Reassemble capacitor in reverse order NOTE Capacitor case must be installed into indent in back panel Heater Box 1 See Component Location Figure 3 for location 2 Remove outer case and back panel 3 Remove wires connected to heating elements convection fan and control thermal cutout 4 Remove screws securing heater box 5 Slide heater box sideways from chassis 6 Reassemble heater b...

Страница 36: ...ocket 5 Remove screw securing light socket to light retainer 6 Reassemble light socket in reverse order Replacing Oven Light Bulb WARNING To avoid electrical shock which can cause severe personal injury or death unplug power cord or open circuit breaker to oven before replacing light bulb After replacing light bulb restore power CAUTION To avoid personal injury or property damage observe the follo...

Страница 37: ...any disassembly procedure WARNING Component Location Figure 1 Touch Panels Displays Triacs Figure 2 H V Board I S Module Touch Panel Top Touch Panel Side Triac 1 Heating Element A front Triac 2 Heating Element B rear Triac 3 Microwave Display Module Diode H V Board Capacitor Interlock Switch Assembly Rack Rack Support Filter Magnetron Fuse Block Fuse Fan Blade ...

Страница 38: ...e following any disassembly procedure RS2220002 Rev 0 38 WARNING Figure 3 Back Panel Fan Thermal Cutout Control Thermal Cutout Back Panel High Voltage Transformer Magnetron Thermal Cutout Fold diagram and place against blower bracket flange prior to assembling access panel Heater Box Power Cord Waveguide Duct Magnetron Inlet Cover ...

Страница 39: ...sembly Figure 4 Stirrer Assembly Stirrer Shaft Stirrer Blade Stirrer Insert Stirrer Cover RTD Resistance Thermal Device Stirrer Cover Mounting Clip Light Lens Cover Light Lens Control Thermal Cutout Torque to 5 in lbs Convection Motor Fan Blade Heater Box Convection Fan Blade Torque to 5 in lbs Left Handed Nut Slotted Heating Element Slotted NOTE Heating assembly must be centered around the Convec...

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