Frigidaire FGMC2765PF Wiring diagram

Frigidaire Wall Ovens Wiring diagram - FGMC2765PF.
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Electronic Oven Control (EOC) Fault Code Descriptions

Code

Condition / Cause

Suggested Corrective Action

F10

Control has sensed a potential runaway oven condition, 
control may have shorted relay, and/or RTD sensor probe 
may have gone bad.

Check RTD sensor probe and replace, if necessary. If oven is overheating, disconnect 
power. If oven continues to overheat when power is reapplied, replace the Electronic 
Oven Control (EOC).

F11

Shorted Key: A key has been detected as pressed (for a 
long period). Will be considered a shorted key alarm and 
will terminate all oven activity.

1. Press 

STOP key.

2. 

If the problem persists, replace the EOC.

F13

Control’s internal checksum may be corrupted.

• 

Press CLEAR key. - Disconnect power, wait 10 seconds, and reapply power. If fault 
returns upon power-up, replace EOC.

F14

Misconnected fl at cables. No communication between oven 
and controls.

1. 

Disconnect power. Verify the fl at cable connection between the touch panel or 
membrane and the EOC on P12 and P13.

2. 

If the problem persist, replace the EOC.

F30

 or

F31

Open RTD sensor probe/ wiring problem. Note: EOC may 
initially display an “F10,” thinking a runaway condition 
exists.
Shorted RTD sensor probe /wiring problem.

1. 

Check wiring in probe circuit for possible open or short condition.

2. 

Check RTD resistance at room temperature (compare to probe resistance chart). If 
resistance does not match the chart, replace the RTD sensor probe.

3. 

Let the oven cool down and restart the function.

4. 

If the problem persists, replace the EOC.

F90

to

F94

Door motor mechanism failure.

1. 

Turn off power for 10 seconds, then turn on power. Test the door latch again (try to 
start a Clean cycle).

2. 

If it fails, check wiring of Lock Motor, Lock Switch and Door Switch circuits.

3. 

Unplug the lock motor from the board and apply power (L1) directly to the Lock 
Motor. If the motor does not rotate, replace Lock Motor Assembly.

4. 

Check Lock Switch for proper operation (do the contacts open and close, check 
with ohmmeter). The Lock Motor may be powered as in above step to open and 
close Lock Switch. If the Lock Switch is defective, replace Motor Lock Assembly.

5. 

If all above steps fail to correct situation, replace the EOC.

Note: Generally speaking, F1X implies a control failure, F3X an oven probe problem, and F9x a latch motor problem.

NOTICE: This service data sheet is intended for use by persons having 
electrical and mechanical training and a level of knowledge of these subjects 
generally considered acceptable in the appliance repair trade. The manufac-
turer cannot be responsible, nor assume any liability, for injury or damage of 
any kind arising from the use of this data sheet.

IMPORTANT NOTE: This unit includes an EOC (electronic oven control). This 
board is not fi eld-repairable.

Safe Servicing Practices
To avoid the possibility of personal injury and/or property damage, it is import-
ant that safe servicing practices be observed. The following are some, but not 
all, examples of safe practices.
1. 

Do not attempt a product repair if you have any doubts as to your ability 
to complete it in a safe and satisfactory manner.

2. 

Before servicing or moving an appliance, remove power cord from elec-
tric outlet, trip circuit breaker to Off, or remove fuse.

3. 

Never interfere with the proper installation of any safety device.

4. 

Use only replacement parts specifi ed for this appliance. Substitutions 
may not comply with safety standards set for home appliances.

5. 

Grounding: The standard color coding for safety ground wires is green 
or green with yellow stripes. Ground leads are not to be used as current 
carrying conductors. It is extremely important that the service technician 
reestablish all safety grounds prior to completion of service. Failure to do 
so will create a potential hazard.

6. 

Prior to returning the product to service, ensure that:
• 

All electric connections are correct and secure.

• 

All electrical leads are properly dressed and secured away from 
sharp edges, high-temperature components, and moving parts.

• 

All uninsulated electrical terminals, connectors, heaters, etc. are 
adequately spaced away from all metal parts and panels.

• 

All safety grounds (both internal and external) are correctly and 
securely reassembled.

• 

All panels are properly and securely reassembled.

IMPORTANT

DO NOT REMOVE THIS BAG

OR DESTROY THE CONTENTS

WIRING DIAGRAMS AND SERVICE

INFORMATION  ENCLOSED

REPLACE CONTENTS IN BAG

Resistance (ohms)

1000 ± 4.0

1091 ± 5.3

1453 ± 8.9

1654 ± 10.8

1852 ± 13.5

2047 ± 15.8

2237 ± 18.5

2697 ±  24.4

Open circuit/infinite resistance

RTD SCALE

Temperature °F (°C)

32 ± 1.9 (0 ± 1.0)

75 ± 2.5 (24 ± 1.3)

250 ± 4.4 (121 ± 2.4)

350 ± 5.4 (177 ± 3.0)

450 ± 6.9 (232 ± 3.8)

550 ± 8.2 (288 ± 4.5)

650 ± 9.6 (343 ± 5.3)

900 ± 13.6 (482 ±7.5)

Probe circuit to case ground

807574801 EN Rev A (13/05)

SERVICE DATA SHEET - Microwave Combination Unit with ES525/530 Electronic Oven Control

GROUNDING INSTRUCTIONS 
This oven is equipped with a three prong grounding plug. It must be plugged 
into the wall oven receptacle that is properly installed and grounded in 
accordance with the National Electrical Code and local codes and ordinances. 
In the event of an electrical short circuit, grounding reduces the risk of electric 
shock by providing an escape wire for the electric current. 

WARNING: Improper use of the 
grounding plug can result in a risk 
of electric shock. 

Electrical Requirements
The electrical requirements are a 
120 volt 60 Hz, AC only, a branch 
circuit protection fuse, 20 amp is 
provided in series with the ac outlet 
on top of the wall oven support.

*Note: Branch circuit fuse 20 amp 
shall be replaced with class cc type.

OVEN CIRCUIT 

ANALYSIS 

MATRIX

On Relay Board

On Display 

Board

ELEMENTS

Oven Light 

J3-3

Conv. Fan 

J3-5

Door Motor

J3-4

Cooling Fan Low 

Speed J3-2

Cooling Fan High 

Speed J3-1

DLB L2 

Out P1

Bake P9 Broil P7 Conv. P11

Door Switch 

P11-4 / P11-3

Preheat

X

X

X

X

X

X

X

Bake

X

X

X*

X*

X

X

X

Broil

X

X

X

X

Convection Bake

X

X

X

X

X

X

X

Convection Roast

X

X

X

X

X

X

X

Convection Broil

X

X

X

X

X

Clean

X

X

X

X

X

Locking / Unlocking

X

Light

X

Door Open

X

Door Closed

X

* Convection element and fan are used for the fi rst rise of temperature.

Relay will operate in this condition only

J4

P11

P9

P7

J3

K11 K14 K16 K18

K7

K5

K3

P5

P6

P11

P15

K9

J3

P2

K1

P3

P17

P1

DOOR SENSING AND PRIMARY INTERLOCK SWITCHES
The primary interlock switch is mounted in the lower position of the latch hook and the 
door sensing switch in the secondary interlock system is mounted in the upper position 
of the latch hook. They are activated by the latch heads on the door. When the door is 
opened, the switches interrupt the power to all high voltage components. A cook cycle 
cannot take place until the door is fi rmly closed thereby activating both interlock switches. 
The secondary interlock system consists of the door sensing switch and secondary 
interlock relay located on the control circuit board.

MONITOR SWITCH
The monitor switch is activated (the contacts opened) by the latch head on the door while 
the door is closed. The switch is intended to render the oven inoperative, by means of 
blowing the monitor fuse, when the contacts of the secondary interlock relay (RY2) and 
primary interlock switch fail to open when the door is opened.

Functions:
1.  When the door is opened, the monitor switch contact close (to the ON condition) 

due to their being normally closed. At this time the secondary interlock relay (RY2) 
and primary interlock switch are in the OFF condition (contacts open) due to their 
being normally open contact switches.

2.  As the door goes to a closed position, the monitor switch contacts are fi rst opened 

and then the door sensing switch and the primary interlock switch contacts close. 
(On opening the door, each of these switches operate inversely.)

3.  If the door is opened, and the secondary interlock relay (RY2) and primary interlock 

switch contacts fail to open, the monitor fuse blows simultaneously with closing of 
the monitor switch contacts.

CAUTION:  BEFORE REPLACING A BLOWN MONITOR FUSE TEST THE DOOR 
SENSING SWITCH, SECONDARY INTERLOCK RELAY (RY2), RELAY (RY1), PRI-
MARY INTERLOCK SWITCH AND MONITOR SWITCH FOR PROPER OPERATION. 
(REFER TO CHAPTER «TEST PROCEDURE»).

NOTE: 

MONITOR FUSE AND MONITOR SWITCH ARE REPLACED AS AN AS-

SEMBLY.

CAVITY TEMPERATURE FUSE
The cavity temperature fuse located on the top of the oven cavity, is designed to prevent 
damage to the oven by fi re. If the food load is overcooked, by either error in cook time 
or defect in the control unit, the cavity temperature fuse will open.

Under normal operation, the cavity temperature fuse remains closed. However, when ab-
normally high temperatures are reached within the oven cavity, the cavity temperature fuse 
will open at 302

O

F(150

O

C) causing the oven to shut down.

NOTE: This is fuse. It does not reset. 

MONITOR FUSE
1.  The monitor fuse blows when the contacts (COM-NO) of the primary interlock relay 

(RY2) and secondary interlock switch remain closed with the oven door open and 
when the monitor switch closes.

2.  If the wire harness or electrical components are short-circuited, this monitor fuse 

blows  to prevent an electric shock or fi re hazard.

MAGNETRON TEMPERATURE FUSE
The magnetron temperature fuse located near the magnetron is designed to prevent 
damage to the magnetron if an over heated condition develops in the tube due to cooling 
fan failure, obstructed air guide, dirty or blocked air intake, etc.

Under normal operation, the magnetron temperature fuse remains closed. However, 
when abnormally high temperatures are reached within the magnetron, the magnetron 
temperature fuse will open at 302°F(150°C) causing the oven to shut down. 

NOTE: This is a fuse. It does not reset. 

Data Sheet Abbreviations and Terminology

DLB - Double Line Break

EOC - Electronic Oven Control

LED - Light-Emitting Diode

MDL - Motor Door Latch

PS - Power supply board (PS1, PS2, 
etc)

RTD - Resistance Temperature 
Detector/Oven Probe

TCO - Thermal cut out, also “thermo 
disc” or “thermal limiter”

VSC - Variable Speed Control

J3. Relay Outputs : Convection Fan, Motor Door 
Latch, Oven Light, Cooling Fan. Power Input (L1 
and Neutral).

P11. Door switch, Motor Door Latch Switch and 
Oven Probe Inputs.

P1. L2 

Out

P3. L2 

In

P5.   L1 Input
P7.   Broil Connector
P9.   Bake Connector
P11.   Convection Element Connector
P15.   L1 Input

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