FRIGIDAIRE FFHN2740PS - Manual

SERVICE DATA SHEET
242321500
ICE & WATER - AUTOMATIC DEFROST
BOTTOM FREEZER - R134a
CAUTION
All electrical parts and wiring must be shielded from torch flame. DO NOT allow torch
to touch insulation; it will char at 200°F and flash ignite (burn) at 500°F. Excessive
heat will distort the plastic liner.
PERFORMANCE DATA NO LOAD & NO DOOR OPENINGS AT 37°/0°
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 -5° to 2°F (-20° to -17°C) -1° to 3°F (-18° to -16°C)
Refrigerator Temperature 34° to 39°F (1° to 4°C) 34° to 39°F (1° to 4°C)
Low Side Pressure -2 to 6 psig ( -14 to 41 kPa) -2 to 6 psig (-14 to 41 kPa)
High Side Pressure (last 1/3
cycle) 85 to 105 psig (586 to 724 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
Cabinet Size
Thermostat Heater
Cut-in Cut-out Watts Ohms
26’ & 28’ SD, 23’ CD
25°F (-4°C) 47°F
(8°C)
500 26.5
Electronic Timer - (ADC) Defrost 24 minutes every 6-96 hours of compressor run
time.
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
FREEZER ICE MAKER CONNECTOR PLUG CONNECTIONS
Wire Number Wire Color Connects to:
1 Green / Yellow Ground
2 Yellow Water Valve
3 Black Line
4 Light Blue Neutral
POWER
ICE MAKER
I CE MAKER
ICE MAKER
WATER VALVE
LINE
THERMAL
CUT-OUT
HOLD
SWITCH
THERMOSTAT
SHUTOFF
SWITCH
WATER FILL
SWITCH
MOLD HEATER
MOLD MOUNTING
PLATE
165 WATTS
MOTOR
NEUTRAL
BL
K
BLK
BLK BLU
C
C
C
NO
NO
NO
NC
NC
NC
YELLOW
BRN
RED
GRN / YEL
RED
RED
LT. BLUE
P-3
P-1
P-2
P-4
ICE MAKER
LT. BLUE
IMPORTANT SAFETY NOTE
The information provided herein is designed to assist qualified 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
Activate: Press ٨ and ٧ for up to 10 sec. simultaneously.
Deactivate: Press + for up to 10 sec. Diagnostic Mode will automatically deactivate after 5 min. of inactivity.
Note: Silence alarm.
• 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 flow as appropriate to determine results of tests.
Test To activate test: Passing result
-- First Screen -- All LED lights on UI illuminated
-- Second Screen -- All segments on UI temperature displays illuminated
-- Third Screen -- Blank UI display, no lights illuminated, no shadowing; “-” and “+”
blinking on FF display side to show location.
28 Dispenser Paddle Press disp. paddle “on” on UI when depressed; “off” when released
1* Standard
Compressor Set Compressor running when “on”; stopped when “off”
2 Defrost Heater Set Defrost limit switch must be closed; verify “CL” in test 26.
Feel for heat from defrost heater when “on”.
If “OP” in test 26, heater will not activate.
3 FF Light Set With FF door open, FF lights on when “on”; off when “off”
8 Water Valve
(Dispenser) Set FF door must be closed.
Be prepared to collect water at dispenser.
Water dispenses when “on”; stops when “off”
9 FZ Light Set With FZ door open, FZ lights on when “on”, off when “off”
10 Auger Motor Set FF door must be closed.
Motor running when “on”; motor stopped when “off”
11 Cube/Crush
Solenoid Set FF door must be closed. Do not leave solenoid in activated state.
Solenoid activated when “on”; deactivated when “off”
41* Perfect Temp
Drawer (PTD) Set PTD UI illuminated when “on”, off when “off”
12* VCC Condenser
Fan Set Fan running when “on”; stopped when “off”
38* VCC Compressor Set Compressor running when “on”; stopped when “off”
15 Evaporator Fan Set Fan running for minimum of 10 sec. when “LO” or “HI”; stopped when
“off”. Feedback failure if fan starts but runs less than 10 sec. Listen for
speed change from “LO” to “HI”.
36 Ice Chute Door Depress ice chute
door or set “OP” on UI when manually opened; “CL” when closed. Or, using “power
on-off”, “OP” on UI when solenoid activated, “CL” when deactivated
22 Damper Set With inspection mirror, observe damper open when “OP”; closed when “CL”
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 Defrost Limit Switch Activates automati-
cally
“CL” on UI when closed; “OP” when open
29 FF Thermistor
Mid-level Activates automati-
cally UI shows temperature sensed by FF thermistor; pass if within 10°F of
temperature measured with gauge at mid-level FF thermistor location.
“OP-” if open; “SH-” if short
30 FZ Thermistor Activates automati-
cally UI shows temperature sensed by FZ thermistor; pass if within 10°F of tempera-
ture measured with gage at FZ thermistor location.
“OP” if open; “SH” if short
33 Ambient Thermistor
@ Main Board Activates automati-
cally 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
35* FF Thermistor
Upper-Level Activates automati-
cally UI shows temperature sensed by upper level FF thermistor; pass if
within 10°F of temperature measured with gauge at upper-level FF
thermistor location. “OP¯” if open; “SH¯” if short
34* Ambient Thermistor
@ UI Activates automati-
cally UI shows temperature sensed at UI; pass if within +20°F/-10°F of tem-
perature measured with gauge at UI location. “OP” if open; “SH” if short
0- Firmware
Parameters Set Displays digit sequence; record
2- Main Board
Firmware Set Displays digit sequence; record
4- UI Firmware Set Displays digit sequence; record
Variable Capacity Compressor (VCC) Diagnostics (select models)
If test 38 fails, diagnose as follows:
Replace Inverter Board
→ Check at Inverter Board on
Compressor
(BLK and RED wires)
Is Inverter Board receiving 10-15
VAC and 1-5 VDC from Main
Control Board?
→ Check at Main Control Board
(BLK/WHT and RED/BLK wires)
Is Main Control Board sending
10-15 VAC and 1-5 VDC to
Inverter Board?
no
→ Check at the connector from the power cord
harness into the inverter board, located in
the machine compartment.
(PUR and WHT wires)
Is Inverter Board receiving 115 VAC
from power supply?
• Check voltage supply.
• Check and repair power
cord harness wiring and
connections.
no
Identify and repair damaged wires or
poor connections between Main Control
Board and Inverter Board.
yes
→ Remove inverter box from the
compressor and check resistance
across compressor winding pairs as
shown.
Is resistance across all winding
pairs equal?
Replace Compressor and
Inverter Board.
no
→ Check connections from Inverter
Board to Compressor
Are connections from Inverter
Board to Compressor intact?
yes
Identify and repair damaged
wires or poor connections
between Inverter Board and
Compressor.
no
VCC Resistance Check
Check resistance between terminals 1 and
2, 2 and 3, 3 and 1.
If all resistances are equal,
compressor is operative.
Replace Main Control Board.
no
yes yes
yes
Error Codes Special Modes
Display
Interpretation Mode
Display Activate/Deactivate
(press for up to 10 sec. simultaneously)
FZ FF FZ FF
-- OP Open FF Thermistor Manual Defrost d F + and - / same to deactivate
OP -- Open FZ Thermistor Display / Showroom 77 77 ٨ and - / Power-on-Reset (POR)
-- SH Shorted FF Thermistor Sabbath Sb Sb ٧ and + / same to deactivate
SH --
Shorted FZ Thermistor System Diagnostic No FF or FZ dis-
play, all UI LEDs on. ٨ and ٧/ + to deactivate
SY CF
UI to Main Control
Board communication
failure; on start up 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.
SY CE
UI Main Control
Board communication
error; after a period
in operation
SY EF Evaporator Fan
Failure
IMPORTANT: PLEASE RETURN THIS SHEET TO ITS ORIGINAL LOCATION.
FREEZER ICE MAKER INFORMATION
(Where Applicable)
Test Cycling: Remove cover by inserting screwdriver in notch at bot-
tom 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 fill adjustment screw will change the
fill time. One full turn is equal to 20cc (.68 oz.). The correct fill is
102 to 130cc (3.4 to 4.3 oz.). When a water valve is replaced, the
fill volume must be checked.
TU
R
N Mounting
Plate
Screws
Mounting
Plate
Screw
Motor
Gear
Timing
Gear
Water Fill
Adjustment