Frigidaire Professional FPBS2778UF, FPBC2278UF Diagram

PERFORMANCE DATA NO LOAD & NO DOOR OPENINGS AT 37°/0°

T

U

R

N

Mounting
Plate
Screws

Mounting
Plate
Screw

Motor
Gear

Timing

Gear

Water Fill
Adjustment

Replace Inverter Board

no

→ Check connections from Inverter

Board to Compressor

Are connections from Inverter
Board to Compressor intact?

Identify and repair damaged
wires or poor connections
between Inverter Board and
Compressor.

no

VCC Resistance Check

yes

CONTROL SETTING

Type A with Run / Start Capacitor 65°F (18°C) Ambient 90°F (32°C) Ambient

Operating Time 90 to 100% 100%

Freezer Temperature

Refrigerator Temperature

Low Side Pressure

High Side Pressure
(last 1/3 cycle)

-5° to 2°F

(-20° to -17°C)

34° to 39°F

(1° to 4°C)

-2 to 6 psig

(-14 to 41 kPa)

85 to 105 psig

(586 to 724 kPa)

-1° to 3°F

(-18° to -16°C)

34° to 39°F

(1° to 4°C)

-2 to 6 psig

(-14 to 41 kPa)

120 to 135 psig

(827 to 931 kPa)

Wattage (last 1/3 cycle) 30 to 50 50 to 70

Amps (running) .4 to .8 .7 to .9

Base Voltage 115 vac (127 vac max)

DEFROST SPECIFICATIONS

Thermal Cutout Heater Defrost Thermistor

Cabinet Size:

27’ & 28’ SD,
22’ CD

Freezer

Fresh Food

Ice Maker

Cut-in Cut-out Watts Ohms Cut-out

110°F

(43.3°C)

110°F

(43.3°C)

135°F

(57.2°C)

135°F

(57.2°C)

500 26.5 48°F

70 188.9 68°F

Electronic Timer - (ADC) Defrost 24 minutes every 6-96 hours of compressor run time.

Termination

CONDENSER FAN MOTOR

Watts RPM Amps

3.1

1100 CW

Opposite Shaft

0.03 Running

FREEZER ICE MAKER SPECIFICATIONS

Electrical 115 vac (127 vac max)

Thermostat Opens at 48°F ( 9°C), Closes at 15° F ( -9°C)

Heater Voltage 115 vac

NO

NC

NEUTRAL

ICE MAKER

RED

LINE

BLK

P-3

P-1

CE MAKER

I

GRN / YEL

MOLD

THERMAL

CUT-OUT

CAUTION

All electrical parts and wiring must be shielded from torch ame. DO NOT allow torch to touch insulation;
it will char at 200°F and ash ignite (burn) at 500°F. Excessive heat will distort the plastic liner.

BRN

MOTOR

BLK

MOUNTING

PLATE

FREEZER ICE MAKER INFORMATION

Test Cycling: Remove cover by inserting screwdriver in notch at bottom

and prying cover from housing. Use screwdriver to rotate motor gear coun­terclockwise until holding switch circuit is completed. All components of ice
maker should function to complete the cycle.

Water Fill Volume: The water ll adjustment screw will change the
ll time. One full turn is equal to 20cc (.68 oz.). The correct ll is 102 to
130cc (3.4 to 4.3 oz.). When a water valve is replaced, the ll volume

must be checked.

(Where Applicable)

POWER

ICE MAKER

SWITCH

RED

MOLD HEATER

165 WATTS

ICE MAKER

HOLD

C

BLK

NO

NC

RED

LT. BLUE

THERMOSTAT

NO

NC

C

WATER FILL

SWITCH

BLU

C

SHUTOFF

SWITCH

YELLOW

(8°C)

(20°C)

P-4

P-2

LT. BLUE

WATER VALVE

SERVICE DATA SHEET

A06915801

ICE & WATER - AUTOMATIC DEFROST

BOTTOM FREEZER - R134a

IMPORTANT: PLEASE RETURN THIS SHEET TO ITS ORIGINAL LOCATION.

ERROR CODES SPECIAL MODES

Display

Interpretation Mode

FZ FF FZ FF (press for up to 10 sec. simultaneously)

-- OP Open FF

Manual Defrost d F FF + and FF - Same to deactivate

Cavity Thermistor

OP -- Open FZ

Demo / Showroom 77 77 FZ + and FF - Unplug to deactivate

Cavity Thermistor

-- SH Shorted FF

Sabbath Sb Sb FZ - and FF + Same to deactivate

Cavity Thermistor

SH -- Shorted FZ

System Diagnostic No FF or FZ display,

Cavity Thermistor

SY CF UI to Main Board

Current Air Temps FZ Temp FF Temp Default Settings
communication
failure; on start up

SY CE UI to Main Board

FFIM Diagnostic Numerical display of
communication
error; after a period
in operation

SY EF Freezer Evaporator

Fan Failure

Notes:

• Always check for pin back-outs, pinched or damaged wires before replacing components.

• Determine whether failure is caused by the component, main control board or wiring.

Contact TID before replacing main control board.

• Refer to Service Manual for additional information.

FRESH FOOD ICE MAKER DIAGNOSTIC MODE

Activate: Press FZ + and FF + temperature pads for up to 10 sec. simultaneously.

Deactivate: Press FF + for up to 10 sec. FFIM Diagnostic Mode will automatically deactivate after 5 min. of inactivity.

52C Ice Maker Thermistor Activates

55C Water Valve

57C Evaporator Fan (FFIM)

58C

63C Twist Tray

Press FF + or - to move forward or backward through tests.

NOTE: Silence alarm.

Test To activate test Passing Result

FZ display shows temperature sensed by Ice Maker Thermistor.

automatically

Press Power
On-Off

Press Power
On-Off

Ice Level Sensor Activates

automatically

“OP” if open; “SH” if short

Remove ice tray to collect water into a measuring container to measure water

ll. If collecting water into ice tray, rst perform test 63C to empty ice tray.

“On” on FZ display when fan activated, “OFF” when deactivated.

Remove ice bucket.
Allow bail arm to drop freely. Pass if no alarm when tray returns to “home” position.
Hold bail arm up. Pass if alarm sounds when tray returns to “home” position.
This test runs continuously until another test is selected.

Press Power
On-Off

Remove ice bucket.
FZ display shows “1” and “GOOD”.

FRESH FOOD ICE MAKER FILL TIME ADJUSTMENT MODE

NOTE: First consider water lter condition before adjusting ll time.

Activate: Press and hold the Icemaker on/off and Powerplus Freeze pads for up to 10 seconds.

Press FF + or - to adjust between the 3 ll settings.

Deactivate: Exits automatically after 10 seconds, or press any button other than + or -.

Display

FZ FF

− Min Fill Time (default)

IC

= Mid Fill Time

= Max Fill Time

VCC COMPRESSOR MOTOR RESISTANCE CHECK

Check resistance between terminals 1 and
2, 2 and 3, 3 and 1.

If all resistances are equal,

compressor is operative.

Display Activate Deactivate

FZ + and FZ - Press and hold FF +

all UI LEDs on

to deactivate

Automatically

and C/F

after 10 sec

FZ + and FF + Press and hold FF +

rst test

to deactivate

Description

Activate: Press
Deactivate: Press

• Tests marked with “*” may not be applicable to this unit and will not be displayed in System Diagnostic Mode.

• Tests displayed in diagnostic mode but not described below are for internal purposes only; advance through.

• View UI display for “on,” “off,” “CL,” “OP,” “SH,” “LO,” “HI” or numerical results of tests.

• Listen for operating sounds; feel for heat or air ow as appropriate to determine results of tests.

Test To activate test: Passing result

-- First Screen -- Blank on both UI displays, no LEDs illuminated.

-- Second Screen -- All LEDs on both UIs illuminated.

-- Third Screen -- Blank UI display, no LEDs illuminated.

28 Dispenser Paddle Press disp. paddle “On” on UI when depressed; “off” when released. “Water” is illuminated

34 Ambient Thermistor

@ UI

46 Humidity Sensor Activates automatically “OP” if open, “SH” if short. AC Heater System: Displays %RH. DC Heater

36 Ice Chute Door Depress ice chute door

47 Dispenser

Pocket Heater
66 Dispenser Light
6- Front UI Firmware Press Power On-Off Displays digit sequence; record.

2 Freezer

Defrost Heater

8 Water Valve

(Dispenser)
10 Auger Motor
11 Cube/Crush

Solenoid
12 Condenser Fan
43 Mullion Anticonden-

sation Heater
38 VCC Compressor
13 FF Lights
15 Freezer

Evaporator Fan

20 FZ Lights
22 Damper

23 FF Door Open/Close FF door “CL” on UI when door closed; “OP” when open.
24 FZ Door Open/Close FZ door “CL” on UI when door closed; “OP” when open.
26 Ice Maker

Defrost Heater

29 FF Thermistor Activates automatically UI shows temperature sensed by FF thermistor; pass if within 10°F of

30 FZ Thermistor Activates automatically UI shows temperature sensed by FZ thermistor; pass if within 10°F of

33 Ambient Thermistor

@ Main Board

39 Freezer Evaporator

Thermistor

45 Ice Maker Mold

Thermistor

68 Ice Maker

Evaporator Thermistor

0- Firmware Parameters
1- Main Board Firmware
3- UI Firmware Press

FF + and ­FF +

for up to 10 sec. simultaneously. Press FF to advance through tests.

for up to 10 sec. Diagnostic Mode will automatically deactivate after 5 min. of inactivity.

Note: Silence alarm.

on front UI.

Activates automatically UI shows temperature sensed at UI; Pass if within +20˚F/-10˚F of tem-

perature measure with gauge at UI location. “OP” if open; “SH” if short.
“Cubes” is illuminated on front UI.

System: “HI” - heater should be on. “Lo” - heater should be off. %RH is
displayed when humidity is between “Lo” and “HI” values; heater could
be on or off. “Crushed” is illuminated on front UI.

“OP” on UI when manually opened; “CL” when closed . Or using “power

or press

Power On-Off

Press Power On-Off

Press Power On-Off

Press Power On-Off

on-off”, motor drive door open “OP” or closed “CL”.
Heater on when “on’ off when “off”.

Dispenser light on when “on”, off when “off”.

Freezer defrost heater on when “on”; off when “off”. Evaporator thermis-

tor temperature is ashed. Watch for temp increase with the heater on.

It may take a few minutes for the evaporator to heat up.

Press Power On-Off

FF door must be closed. Be prepared to collect water at dispenser.

Water dispenses when “on”; stops when “off”.
Press Power On-Off
Press Power On-Off

FF door must be closed. Motor running when “on”; motor stopped when “off”.

FF door must be closed. Do not leave solenoid in activated state.

Solenoid activated when “on”; deactivated when “off”.
Press Power On-Off
Press Power On-Off

Press Power On-Off
Press Power On-Off
Press Power On-Off

Fan running when “on”; stopped when “off”.

Flip mullion heater on when “on”; off when “off”.

Compressor running when “on”; off when “off”.

FF lights on when “on”; off when “off”.

Press to toggle between “off”, “LO” and “HI”. A current sensor reading is

ashed (units are not mA). OFF reading should be around 2. “LO” speed

reading should settle down to around 9. “HI” speed reading should settle

down above 40.
Press Power On-Off
Press Power On-Off

FZ lights on when “on”, off when “off”.

Perform test 15 and set fan to “HI”. Then check for air ow when open

“OP”; and no air leaks when closed “CL”.

Activates automatically Heater is turned on automatically. The ice maker evaporator thermistor

temperature is ashed. Watch for temp increase with the heater on. It

may take a few minutes for the evaporator to heat up.

temperature measured with gauge at FF thermistor location. “OP” if

open; “SH” if short.

temperature measured with gauge at FZ thermistor location.“OP” if

open; “SH” if short.
Activates automatically UI shows temperature sensed at main board; pass if within +20°F/-10°F

of temperature measured with gauge at main board location. “OP” if

open; “SH” if short.
Activates automatically UI shows temperature sensed by freezer evaporator thermistor; pass if

within 10°F of temperature measured with gauge at evaporator thermis-

tor location.“OP” if open; “SH” if short.
Activates automatically UI shows temperature sensed at ice maker; pass if within +20°F/-10°F

of temperature measured with gauge at ice maker mold. “OP” if open;

“SH” if short.
Activates automatically UI shows temperature sensed by evaporator thermistor; pass if within

10°F of temperature measured with gauge at evaporator thermistor loca-

tion. “OP¯” if open; “SH¯” if short.
Press Power On-Off
Press Power On-Off

Power On-Off

Displays digit sequence; record.

Displays digit sequence; record.

Displays digit sequence; record.

IMPORTANT SAFETY NOTE

The information provided herein is designed to assist qualied repair personnel only. Untrained persons should

not attempt to make repairs due to the possibility of electrical shock. Disconnect power cord before servicing
this appliance.

IMPORTANT

If any green grounding wires are removed during servicing, they must be returned to their original position and
properly secured.

SYSTEM DIAGNOSTIC MODE

FRONT

LED LIGHT WIRING

123

4

WHT/BRN

WHT/BRN

WHT/BLU

WHT/BLU

LED LED LED

RG-5

1
2
3
4

1
2
3
4

WHT/BLU
WHT/BLU
WHT/BRN
WHT/BRN

WHT/BLU

WHT/BRN

LED

RG-6

LED

RG-7

REFRIGERATOR LEDS

1

432

WHT/RED

WHT/GRN

LED LED

TYPICAL LED CONNECTOR

INLINE CONNECTOR ABBREVIATION KEY

ABBR. EXPLANATION

AT1 9 PIN CONNECTION AT AIR TOWER

9 PIN CONNECTION IN FRESH

IM1

FOOD ICEMAKER COMPARTMENT
6 PIN CONNECTION IN FRESH

IM2

FOOD ICEMAKER COMPARTMENT
5 PIN CONNECTION AT THE LEFT

LH2

DOOR UPPER HINGE
9 PIN CONNECTION IN THE MAIN

MB1

BOARD HOUSING BEHIND THE TOE
GRILLE
4 PIN CONNECTION IN THE MAIN

MB2

BOARD HOUSING BEHIND THE TOE
GRILLE
9 PIN CONNECTION IN THE

MC1

MACHINE COMPARTMENT TO THE
LEFT OF THE COMPRESSOR
9 PIN CONNECTION AT THE RIGHT

RH1

DOOR UPPER HINGE
5 PIN CONNECTION AT THE RIGHT

RH2

DOOR UPPER HINGE
2 PIN CONNECTION AT THE RIGHT

RH3

DOOR UPPER HINGE

4

WHT/BRN

RG-4

WHT/BRN

WHT/BLU

WHT/BLU

432

WHT/GRN

1

123

WHT/GRN

4

WHT/BRN

WHT/BRN

WHT/BLU

RG-3

LED

RG-2

LED

RG-1

WHT/GRN

WHT/RED

1

WHT/RED

WHT/RED

FZ-1FZ-2

FREEZER LEDS

123

WHT/BLU

WHT/BRN
WHT/BRN
WHT/BLU
WHT/BLU

WHT/BRN
WHT/BRN
WHT/BLU
WHT/BLU

MC1

RH2

RH1

4
3
2
1

4
3
2
1

RH3

BACK VIEW

WHT/BRN

WHT/BLU

USER

INTERFACE
ON THE SIDE
OF THE DOOR

J232

1

FREEZER

EVAPORATOR

SENSOR

FREEZER

SENSOR

FRESH FOOD

SENSOR

IM EVAPORATOR

SENSOR

IM FAN

MOTOR

TRAY

SENSOR

COMPRESSOR

CONTROL SIGNAL

12V DC
DAMPER

MOTOR

RH LIGHT

SWITCH

(DOOR OPEN)

LH LIGHT

SWITCH

(DOOR OPEN)

LH2

INTERFACE

+12V DC

+12V DC

+12V DC

+12V DC

REVERSIBLE

12V

3

J42

1

M

TWIST
MOTOR

BAIL ARM

SWITCH

EVAPORATOR

FAN (DC)

RED/YEL

BRN/YEL
BLK/YEL
WHT/YEL

FREEZER DOOR

SWITCH

(DOOR OPEN)

USER

BLK

RED

IM1
IM2

MB1

2

J6

1

1
5
2
4

J3

3
6
9

10

J732

1

GRN/BLU

2

DK. BLU

1

M

2

1

3

YEL/BLK (COM)
YEL/GRY (N/C)
PUR/BLK (N/O)

PURPLE (COM)

YEL/BLK (COM)

YEL/GRY (N/C)

PURPLE (N/O)
PURPLE (COM)

FRONT INSIDE

MB2

POWER CORD

DISPENSER

HEATER (DC)

FLAPPER

POSITION

SWITCH

DISPENSER

PADDLE

DISPENSER

LIGHT

FLAPPER

MOTOR

GRY/WHT

GRY/WHT

PIN 3
PIN 4
PIN 5

RH2

MB1

PIN 7

PIN 8

PIN 6

PIN 9

PIN 2

PIN 1

PIN 5

PIN 4

PIN 6

PIN 3

PIN 3
PIN 4
PIN 5

LH2

2
1

IM1

PIN 6

PIN 7

PIN 2

PIN 1

IM2

PIN 2

PIN 1

PIN 3

MB1

RED

1

BLK

2

AT1

PIN 6

PIN 5

PIN 3

PIN 2

YEL/PNK

YEL/PNK

PIN 5

PIN 8

MB1

PIN 4

PIN 5

RH1

VIEW

AT1

66
4
2
1

4
2
1

BLK/ORN

BLK

DC SIDE

BLK

1

WHT

2
3

RED

4

GRY/WHT

5

GRY/WHT

6

GRY/WHT

7

GRY/WHT

8

GRY/BLK

GRY/BLK

GRY/RED

GRY/RED

GRN/BLU

DK. BLU

WHT

RED

BLU

YEL

GREY

GREY

WHT/GRN

WHT/RED

WHT/BRN

WHT/BLU

YEL/WHT

RED/WHT

BRN/WHT

RED/BLK

BLK/WHT

RED/YEL

BRN/YEL

BLK/YEL

WHT/YEL

YEL/GRY

YEL/GRY

YEL/PNK

YEL/PNK

J6

11
12

3
4

1
8
2
3

J7

4
7
5
6

3
4
5
6
1

J4

2
9

11
12

5
6

J5

3
4

11

J5

7

1

J8

2

12

8

AT1, IM1, MB1, & RH1

3

9

1

MC1

3

9

7

1

GND

J9

COMM.

OR

+5V DC

J11

+12V DC

+5V DC

+5V DC

+5V DC

+5V DC

+12V DC

REVERSIBLE 12V DC

+5V DC

+5V DC

+12V DC

+12V DC

+12V DC

GND

+12V DC

OUT1A

OUT1B

OUT2A

OUT2B

+5V DC

BOARD-MOUNTED
AMBIENT THERMISTOR

+5V DC

J5

+5V DC

9

7

7

3

9

7

1

AC SIDE

NEUTRAL

CAB. GROUND

LINE

U2 (SSR1)

LINE

NEUTRAL

RL1

ERF2500++ISO
REFRIGERATOR

CONTROL

IM2

3

3

6

4

1

1

MB2

2

4

3

1

RL5

RL4

RL8

RL9

RL7

RL2

RL6

RL3

6

4

4

3

J112

J2

J3

J3

J2

J1

J2
J3

J3

3

1

2

1

3

3
7
4

6
3
5

1
5
4

2
2

1

BASE PLATE

GROUND

COMPRESSOR

GROUND

LT. BLU

GRN/YEL

BLK

YEL/RED

YEL/BLK

LT.BLU/BLK

RED

YEL

TAN

YEL/BLU

LT. BLU

BROWN/BLUE

BLU/WHT

PUR/BLK

CATCH

YEL

BLK

BRN

CABINET
WRAPPER

5

1

TAN

LH2 & RH2

2

121

MC1

PIN 2

PIN 3

PIN 6

YEL/BLU

PIN 1

PIN 3
PIN 2

PIN 4

MB2

PIN 7

PIN 8

MC1

PIN 9

RH3

NON-RIBBED

SPLICE
SPLICE

SPLICE

(SEE FZ ICE

MAKER DIAGRAM)

BROWN

(LINE)

BLK

DIODE

DIODE

FREEZER

EVAPORATOR

HEATER

FREEZER

ICE MAKER

PIN 5

IM1

PIN 1

PIN 3

PIN 2

PIN 7

PIN 4

RH1

5

1

RIBBED

LT. BLU

SPLICE

CONDENSER FAN

TWIST ICEMAKER

WATER VALVE

DISPENSER

WATER VALVE

SPLICE

TAN/YEL

COIL COVER

GROUND

LATCH

(NEUTRAL)

LT. BLU

MAIN INLET

WATER VALVE

FREEZER ICEMAKER

WATER VALVE

THERMAL
CUT-OUT

ICEMAKER

EVAPORATOR

HEATER

BLU/WHT

PURPLE

1

PURPLE (COM)

2

PURPLE (N/O)

4

YEL/GRY (N/C)

6

YEL/BLK (COM)

1

PURPLE (COM)

2

PUR/BLK (N/O)

4

YEL/GRY (N/C)

6

YEL/BLK (COM)

PIN 5

LT. BLU

4
3
2
1

CUBE/CRUSH

SOLENOID

AUGER
MOTOR

PIN 1

PIN 4

MC1

LT. BLU/BLK

LT. BLU

BLK

BLK/ORN

YEL/PNK
YEL/PNK

FREEZER DOOR

SWITCH

(DOOR OPEN)

GRN/YEL

CUBE/CRUSH
SOLENOID

AUGER MOTOR

THERMAL
CUT-OUT

LT. BLU

BLK

LT. BLU

CONTROL SIGNAL

RED/BLK
BLK/WHT

12 VDC

BASE PLATE

GROUND

YEL/BLU

BEHIND FRONT

LEFT ROLLER

POWER

RIGHT HINGE

GROUND

PIN 9

PIN 6

RH1

SPLICE

LH LIGHT

SWITCH

(DOOR OPEN)

RH LIGHT

SWITCH

(DOOR OPEN)

GRN/YEL

RIGHT DOOR

LT. BLU

PIN 4

IM1

VARIABLE SPEED

COMPRESSOR/ INV.

FLANGE

GRN/YEL

PIN 1

PIN 2

RH3

J2

J3

J1

FLIP MULLION COVER

2

1

MULLION HEATER

3

BOARD VIEW

2

4

RL1

3

1

1

RL5

RL3

1

RL6

RL9

RL8

U2

RL4

RL2

RL7

J8

AMBIENT

TEMP

SENSOR

1

J5

J9

J11

4

1

12

11

J6

1

2

1

J4

1

J7

1

Wire Diagram A06575501