Frigidaire FMV145KS3 Wiring Diagram



TECHNICAL DATA SHEET

MWO TROUBLESHOOTING FLOW CHART

SMART BOARD

The SMART BOARD contains the power relay, LVT, vent blower triac, surface light relays, and other components to perform the proper switching circuits. Several disconnect plugs are also located on the SMART BOARD:

CON 01 - Ribbon Connector CON 02 - Vent Blower Connector CON 03 - Primary L.V.T & Main Relay CON 04 - Door Sensing & Probe Connector CON 05 - Gas Sensor Connector

(PLMV168, GLMV168)

Many diagnostic circuit tests can be made at the disconnect plugs. (Refer to diagnosis flow chart and simplified schematic in mini-manuals.)

CONTROL PERFORMANCE TEST

Set Clock-Touch clock pad, enter time of day, AM/PM touch start pad. Alternately touch each function pad and enter time or temperature selection for the function. Also change power levels.

Touch Clear-Off after each function test to clear that function. Repeat procedure for each function to exercise each pad.

Control and display should respond to each entry.

Display should revert to Time-Of-Day after each Clear-Off. Refer results to Diagnostic Flow Chart.

KEY PANEL TEST

If necessary the key panel pads can be verified by a continuity test. For ease of handling the key panel should be removed and placed on a flat surface. Check continity between connections at end of

ribbon (Use high scale).

RIBBON

PAD CONN. PAD CONN.

ADD 30SEC 4-11 REHEAT 8-11 BEVERAGE 9-11 POWER LEVEL 3-14 TIMER 4-13 DEFROST START 3-11

4-15 BEEPER VOLUME 9-12 AUTO NITE LIGHT 6-12 POTATO 6-10 AM/PM 9-13 1 9-16 SURFACE LIGHT

7-12 2 8-16 VENT FAN 8-12 3 7-16 TURNTABLE 5-12 4 6-16 REMINDER 5-13 5 5-16 TIME COOK 5-15 6 4-16 DELAY START 6-13 7 9-15 CLEAR 3-12 8 8-15 POPCORN 7-11 TEMPCOOK/ROAST 3-15 GROUND MEATS 3-10 VEGETABLE 9-10

- FMV145 -

BEVERAGE 6-11 REHEAT 9-11

POPCORN 5-11

PUB. NO. 31-40015

CLOCK 7-13

HELP 4-12

9 7-15 0 6-15

1~9

10~16

ERROR MESSAGE

Display Signal

• F1 Open thermal sensor(convection)

• F2

• F3

Shorted thermal sensor(convection) Keypanel shorted for > 60seconds

• F4 Open humidity sensor

• F5

Shorted humidity sensor

* Error sound will beep for 3 cycles (2 second on, 1 second off) loudey in upper condition.

SENSOR COOKING

The Sensor Cooking function uses a special gas sensor which detects both humidty (steam) and hydrocarbons (food odors) during the cooking process, The sensor is a plug-in device located in the vent area at the top left hand corner of the cavity behind the grille.

Bracket Barrier

SENSOR COOKING TEST

1. Place 1/3 cup tap water in oven.

2. Touch

3. Control Beeps and shuts off.

4. Touch

VEGETABLE

CLEAR/OFF

A) Test OK - Normal B) Test Fails - Check Sensor C) Test Fails - See Sensor Test Below

Condition

(PLMV168, GLMV168)

, the oven starts immediately.

SENSOR TEST (QUICK TEST)

(PLMV168, GLMV168)

1. With 2 fingers touch and hold the following pads at the same time:

and

2. Observe diagnostic number in display (numbers approximate)

15-185 (Normal-verify with "detection test") 213 or Higher (sensor failed to open, sensor

unplugged, wiring or smart board) Less than 6 (shorted sensor, or smart board).

NOTE:

Only heater terminals (H : Black and Red leads) can be checked with ohmmeter (30 ).

CAUTION :

DO NOT ATTEMPT TO CHECK SENSOR TERMINALS(White and Orange leads).

CAN DAMAGE SENSOR.

1. SET CLOCK (IF NEEDED)

2. PLACE CUP OF WATER AND NEON LIGHT TESTER IN UNIT

3. PROGRAM UNIT TO COOK

YES

UNIT ABLE TO

PRESS START

SERVICE

BREAKER

TRIPS?

WATER HEATS /

NEON TESTER

INSTALL CLAMP ON

AMMETER TO MWO's

INTERNAL FUSE

ABOUT

BLOWER AND CAVITY LIGHT

CHECK VOLTAGE ACROSS POWER

RELAY ON PCB (DOOR CLOSED,

NO COOKING PROGRAMMED) -

CMO ONLY - IF AN OTR, GO TO

INSTALL CLAMP ON AMMETER

1. UNPLUG UNIT

2. DISCHARGE HVC

> 8A

3. SET DVM ON 2K OHM SCALE

4. MEASURE HVD SIDE OF HVC TO GROUND

PROGRAM?

IMMED

AFTER A

FEW SEC

LIGHTS?

LEAD

< 2A

MAGNETRON

ON?

YES

PRIMARY

SWITCH OK

SHOULD GET ABOUT 120V

"OTR START" BLOCK

TO A MAGNETRON LEAD

OTR START

START - VERIFY MWO POWER

CORD PLUGGED INTO OUTLET

YES

IS DISPLAY

LIT?

MONITOR

DOOR

SWITCH

OK?

YES

PROBLEM - CALL TAG

> 8A

CAVITY

LIGHT

ONLY ON

YES

PERFORM

KEY PANEL

"*" REFER TO FRONT

PAGE FOR MORE INFO

CHECK RESISTANCE

OF HVC - 2K OHM

INTERMITTENT

TEAM FOR

RESOLUTION

MAGNETRON &

HV COMPTS

ARE GOOD

REPLACE

PRIMARY DOOR

SWITCH

ABOUT 120V

PROGRAM UNIT FOR

COOKING AND START -

CHECK VOLTAGE AT RELAY

INFINITE

(OPEN)

RESISTANCE

SCALE ON DVM

AGAIN

120V?

< 1A

DVM - DIGITAL VOLT METER HVC - HIGH VOLTAGE CAPACITOR HVD - HIGH VOLTAGE DIODE HVT - HIGH VOLTAGE TRANSFORMER LVT - LOW VOLTAGE TRANSFORMER TCO

- THERMAL CUT OUT (TEMPERATURE SENSOR)

PCB - PRINTED CIRCUIT BOARD

TEST

SOME

PANEL

CIRCLE NODES:

ARROWS - EXAMPLE:

RETEST & REASSEMBLE -

REPLACE PCB REPLACE HVT

YES

CHECK RESISTANCE

OF SECONDARY SIDE

OF HVT (SINGLE LEAD

REPLACE HVD

& HVC AND

VERIFY OUTLET

VOLTAGE PRESENT

YES

KEY

OK?

FOLLOW THE

A A

HVT IS GROUNDED

REPAIR /

REPLACE

YES

RESISTANCE

< 2K OHMS?

THEN

GO TO

END

ABOUT 0V

YES

WIRING TO HVT

RETEST

OK?

TO HVC)

NONO

CHECK FUSE/CIRCUIT BREAKER - RESET

BREAKER/REPLACE FUSE IF NEEDED

UNPLUG & DISASSEMBLE

INSTALL SERVICE

BREAKER ACROSS

YES

SERVICE BREAKER

TRIPPED BEFORE

YES

IS INTERNAL

MWO 15A/20A

FUSE OK?

FUSE HOLDER

PLUG IN UNIT

IS DISPLAY

PROGRAMMING

FOR COOK?

VOLTAGE AT

LVT ON PCB?

REPLACE

KEY PANEL

REPLACE

HVC IS

MISWIRED

REPAIR

ANY SHORTED

OR PINCHED

WIRING?

YES

HVC

YES

REPLACE

TCO(s)

REPAIR

OK?

1. SET CLOCK (IF NEEDED)

2. PLACE CUP OF WATER AND NEON LIGHT TESTER IN UNIT

3. PROGRAM UNIT TO COOK

70 - 150

OHMS

OTHER

YES

RETEST & REASSEMBLE -

END

REPLACE PCB

REPLACE HVT

OPEN

HVT IS OK

LIT?

HAVE

CHECK

TCO(s)

CLOSED

CHECK/ REPAIR

TCO

WIRING

REPLACE

MAGNETRON

THIS IS A

LEGEND -

FIND

THESE

ON MAIN

CHART

YES

MODULARITY-OTR-FRIGIDAIRE MODEL NO. :

PLMV168KC4, GLMV168KB4, GLMV168KQ4, GLMV168KS4, FMV145

MODULARITY-OTR-FRIGIDAIRE MODEL NO. :

PLMV168KC4, GLMV168KB4, GLMV168KQ4, GLMV168KS4, FMV145

Printed in Malaysia DE99-00140B

MICROWAVE OVEN HOODS

IMPORTANT SAFETY NOTICE

THIS INFORMATION IS INTENDED FOR USE BY INDIVIDUALS POSSESSING ADEQUATE BACKGROUNDS OF ELECTRICAL, ELECTRONIC AND MECHANICAL EXPERIENCE. ANY ATTEMPT TO REPAIR A MAJOR APPLIANCE MAY RESULT IN PERSONAL INJURY AND PROPERTY DAMAGE. THE MANUFACTURER OR SELLER CANNOT BE RESPONSIBLE FOR THE INTERPRETATION OF THIS INFORMATION, NOR CAN IT ASSUME ANY LIABILITY IN CONNECTION WITH ITS USE.

E. BEFORE TURNING ON MICROWAVE

F. ANY DEFECTIVE OR MISADJUSTED

DISCONNECT POWER BEFORE SERVICING

IMPORTANT · RECONNECT

ALL GROUNDING DEVICES

ALL PARTS OF THIS APPLIANCE CAPABLE OF CONDUCTING ELECTRICAL CURRENT ARE GROUNDED. IF GROUNDING WIRES, SCREWS, STRAPS, CLIPS, NUTS OR WASHERS USED TO COMPLETE A PATH TO GROUND ARE REMOVED FOR SERVICE, THEY MUST BE RETURNED TO THEIR ORIGINAL POSITION AND PROPERLY FASTENED.

GROUNDING SPECIFICATIONS

PRECAUTIONS TO BE OBSERVED BEFORE AND

Leakage Current 0.5 mA. (Max.) Ground Path Resistance 0.14 ohms (MAX.)

DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY

IF OVEN IS OPERATIVE PERFORM MICROWAVE EMISSION CHECK PRIOR TO.

B. DO NOT OPERATE OR ALLOW THE

OVEN TO BE OPERATED WITH THE DOOR OPEN.

C. IF THE OVEN OPERATES WITH THE

DOOR OPEN :

1) INSTRUCT THE USER NOT TO OPERATE THE OVEN AND

2) CONTACT THE MANUFACTURER AND THE CENTER FOR DEVICES

RADIOLIGICAL HEALTH IMMEDIATELY.

CHECK THE FOLLOWING SAFETY ITEMS ON ALL MICROWAVE OVENS (MWO) BEFORE ACTIVATING THE MAGNETRON. MAKE REPAIRS AS NECESSARY :

1. INTERLOCK OPERATION

2. PROPER DOOR CLOSING

3. SEAL AND SEALING SURFACES

(CHECK FOR ARCING, WEAR, AND OTHER DAMAGE)

4. DAMAGE TO OR LOOSENING OF

HINGES AND LATCHES

EVIDENCE OF DROPPING OR ABUSE

PUB. NO. 31-40014

INSTALLATION REQUIREMENTS

ELECTRICAL MWO Power 950 Watts

Power Source 120 VAC, 60 Hz. Line Current 13.5 Amps. (1580Watts) Over Current Protection 20 Amps * * Requires 120 Volt, 20 Amp. parallel,

grounded separate circuit.

Working Voltage 105-130 VAC.

MICROWAVE LEAKAGE TEST

1. Place 275 ml. water in 600 ml. beaker

2. Place beaker in center of oven shelf.

3. Set meter to 2450 MHz scale.

4. Turn oven "on" for 5 minute test.

5. Hold probe perpendicular to surface being

6. Maximum leakage 4 MW/CM

7. Record data on service invoice and

NOTE :

Inform the manufacturer of any oven found to have emission in excess of 5 MW/CM repairs to bring the unit into compliance at no cost to owner and try to determine cause. Instruct owner not to use oven if it has not been brought into compliance.

POWER FOR ANY SERVICE TEST OR INSPECTION WITHIN THE MICROWAVE GENERATING COMPARTMENTS, CHECK THE MAGNETRON, WAVE GUIDE, AND CAVITY FOR PROPER ALIGNMENT, INTEGRITY, AND CONNECTIONS.

COMPONENTS IN THE INTERLOCK, MONITOR, DOOR SEAL, AND MICROWAVE GENERATION AND TRANSMISSION SYSTEMS SHALL BE REPAIRED, REPLACED, OR ADJUSTED BY PROCEDURES DESCRIBED IN THIS MANUAL BEFORE THE OVEN IS RELEASED TO THE OWNER.

A MICROWAVE LEAKAGE CHECK TO VERIFY COMPLIANCE WITH THE FEDERAL PERFORMANCE STANDARD SHOULD BE PERFORMED ON EACH OVEN PRIOR TO RELEASE TO THE OWNER.

(WB64X5010)

tested and scan surfaces at rate of one inch/sec. Test the following areas:

Entire perimeter of door and control panel Viewing surface of door window Exhaust vents

microwave leakage report.

Maximum allowable leakage is 5 MW/

. 4 MW/CM2is used to allow for

CM measurement and meter accuracy.

. Make

WARNING!

TO PREVENT ELECTRICAL SHOCK, USE EXTREME CAUTION WHEN DIAGNOSING OVEN WITH OUTER CASE REMOVED AND POWER "ON". THE HIGH VOLTAGE SECTION OF THE POWER SUPPLY, INCLUDING FILAMENT LEADS HAVE THE POTENTIAL WITH RESPECT TO GROUND TO REACH 4000 VOLTS!

HIGH VOLTAGE CAPACITOR

The high voltage capacitor has an internal shunt resistor to automatically discharge the capacitor when the oven turns "off". Under normal operation the capacitor should fully discharge within 30 seconds.

WARNING!

Always be certain the capacitor is discharged before servicing. Discharge by placing an insulated handle screw driver between the diode connection of the capacitor and oven chassis ground.

PERFORMANCE TEST

1. Measure line voltage (loaded). This test is based on normal voltage variations of 105V to 130V. Low voltage will lower output power and temperature rise.

2. Place WB64 X0073 beaker containing one liter water (1000ml, 59

F~75 F) on turn table and

record the starting water temperature with

an accurate thermometor. (DO NOT USE ANY OTHER LOAD OR DISH AS RESULTS WILL VERY FROM STANDARD!)

3. Set at HIGH power for 2 minutes, and 3 sec.

4. Turn on the oven.

5. Record end water temperature. The minimum difference between the initial and ending temperature should be:

40 F @ 120 V

INTERLOCKS (DOOR Latch Switches)

Interlocks are designed as follows:



Primary - Bottom switch operated by bottom  latch pawl connected to line (L) leg.



TECHNICAL DATA SHEET

HOW TO TEST INTERLOCKS

1. Disconnect power, open control panel, and discharge capacitor.

Primary

2. Check Continuity of Com and N.O. :

Door Closed – Door Open –

MONITOR SWITCH

The monitor switch is located between the top and bottom interlocks. The monitor switch is operated indirectly by the bottom latch pawl.

HOW TEST MONITOR

1. Disconnect power, open control panel, and

discharge capacitor.

2. Disconnect monitor switch leads, and test at

terminals:

Door Closed – Door Open –

3. Reconnect switch wiring.

4. Test Circuit Operation:

A) Connect temporary jumper across relay

contacts and primary switch to simulate shorted switch contacts. Locate convenient connections in circuit to be certain COM and N.O. terminals are used.

B) Connect OHM meter (Low Scale) across

the two line terminals of appliance power cord. Continuity must show:

Door Close –  Door Open –

C) Remove 20 Amp. Fuse

Ohms). If not check wiring of monitor

and interlock circuits.

WARNING!

jumper leads from interlocks and relay. Reconnect monitor switch leads, replace fuse.

Replacement of any parts in monitor

After test remove temporary

– Circuit must open

circuit requires repeating this entire test procedure. IMPORTANT

Door, Interlock

Check for microwave leakage after replacing or adjusting

switches or

brackets.

FUSE

WARNING!

to operation of the monitor switch, the monitor switch must be replaced. Also replace relays and / or interlock switches when continuity check shows contacts shorted.

When 20 Amp. fuse is blown due

INTERLOCK REPLACEMENT

The switch housing is not adjustable. It is fixed on the front cavity with 2 screws.

IMPORTANT - CHECK FOR MICROWAVE

LEAKAGE AFTER REPLACING OR ADJUSTING DOOR, INTERLOCK SWITCHES OR BRACKETS.

CAUTION !

When safety interlocks and monitor switches are repaired or replaced, check microwave leakage.

Perform microwave leakage check, if leakage does not exceed 4 MW/CM it is performing properly.

AUTOMATIC FAN FEATURE

Exhaust fan turns "ON" automatically during some surface unit heavy use conditions. (Cannot be turned off manually - will turn off automatically.) May stay on up to 15 mins. after range and lower oven controls are turned off.

HOOD THERMOSTAT

Single pole thermostat mounted ON R.H. side duct in control compartment. Contacts close at approx. 158 F.

BOTTOM THERMOSTAT

Single pole thermostat mounted on base plate. Contacts open at approx. 248 F.

DOOR ASSEMBLY (NOT ADJUSTABLE)

The door assembly is serviceable as an assembly or with parts.

MICROWAVE LEAKAGE TEST

A microwave leakage test must be performed any time a door is removed, replaced, disassembled, or adjusted for any reason.

THE MAXIMUM LEAKAGE IS 4 MW/CM

MICROWAVE OVEN HOODS

WARNING NEVER TOUCH OR SERVICE THE HIGH VOLTAGE CIRCUIT WITHOUT DISCHARGING CAPACITOR BY SHORTING ACROSS ITS TERMINALS. TO AVOID POSSIBLE ELECTRICAL SHOCK.

OVEN THERMAL CUTOUT (FLAME SENSOR)

The Oven Thermal Cutout is located on the top side of the Oven Cavity beside Exhaust duct with a temperature rating of 212 F.(100 C.) The cutout is tightly held to the top of the oven cavity by a spring clip.

NOTE :

If cutout cannot be removed from clip oven will have to be removed from installation and outer case removed.

ANTENNA

The antenna is motor driven and located on the upper side of the cavity. The oven uses a top feed wave guide. The antenna blade is located in the wave guide and the motor is located on the wave guide.

To Service Antenna Blade

1. Disconnect power and open the door.

2. Remove the clip and turn the antenna cover left.

3. Remove antenna cover and the antenna will come with it.

To Service Antenna Motor

1. Disconnect power and remove grille screws(2).

2. Remove grille and the bracket duct upper screw.

3. Remove the bracket duct upper and disconnect the antenna motor wire.

4. Remove antenna motor screws(2) and pull the antenna motor.

To Service Turntable(on/off) Motor

1. Disconnect power and remove bottom plate screws(7).

2. Remove bottom plate and disconnect the turntable motor wire.

3. Remove turntable motor screws(2) and pull the turntable motor.

CAPACITOR AND DIODE REMOVAL

The high voltage capacitor and diode can be serviced through Control Panel after removing grille.

1. Disconnect power and discharge capacitor.

Disconnect capacitor leads and remove 1 screw.

3. Remove bracket-capacitor.

MAGNETRON, MAGNETRON FAN, VENT BLOWER AND POWER TRANSFORMER

Oven must be removed from wall.

REMOVING OVEN FROM WALL (2 PEOPLE REQUIRED)

Oven hooked on metal tabs at bottom of wall mounting plate and fastened to cabinet by (3) top cabinet bolts.

CAUTION :Oven weights about 62 lbs.

Requires 2 people for removal.

1. Disconnect Power Cord, Top vented models disconnect duct and remove damper assembly.

2. Remove top cabinet bolts(3).

3. Pull unit forward slowly, providing adequate support to prevent dropping unit during removal of last top cabinet bolt.