Wiring Diagram
SERVICE DATA SHEET
A06915801
ICE & WATER - AUTOMATIC DEFROST
BOTTOM FREEZER - R134a
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.
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
BLK
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
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:
27’ & 28’ SD,
22’ CD
Thermal Cutout Heater Defrost Thermistor
Termination
Cut-in Cut-out Watts Ohms Cut-out
Freezer
110°F
(43.3°C)
135°F
(57.2°C)
500 26.5 48°F
(8°C)
Fresh Food
Ice Maker
110°F
(43.3°C)
135°F
(57.2°C)
70 188.9 68°F
(20°C)
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
ERROR CODES SPECIAL MODES
Display
Interpretation Mode
Display Activate Deactivate
FZ FF FZ FF (press for up to 10 sec. simultaneously)
-- OP Open FF
Cavity Thermistor
Manual Defrost d F FF + and FF - Same to deactivate
OP -- Open FZ
Cavity Thermistor
Demo / Showroom 77 77 FZ + and FF - Unplug to deactivate
-- SH Shorted FF
Cavity Thermistor
Sabbath Sb Sb FZ - and FF + Same to deactivate
SH -- Shorted FZ
Cavity Thermistor
System Diagnostic No FF or FZ display,
all UI LEDs on
FZ + and FZ - Press and hold FF +
to deactivate
SY CF UI to Main Board
communication
failure; on start up
Current Air Temps FZ Temp FF Temp Default Settings
and C/F
Automatically
after 10 sec
SY CE UI to Main Board
communication
error; after a period
in operation
FFIM Diagnostic Numerical display of
rst test
FZ + and FF + Press and hold FF +
to deactivate
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.
Press FF + or - to move forward or backward through tests.
Deactivate: Press FF + for up to 10 sec. FFIM Diagnostic Mode will automatically deactivate after 5 min. of inactivity.
NOTE: Silence alarm.
Test To activate test Passing Result
52C Ice Maker Thermistor Activates
automatically
FZ display shows temperature sensed by Ice Maker Thermistor.
“OP” if open; “SH” if short
55C Water Valve
Press Power
On-Off
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.
57C Evaporator Fan (FFIM)
Press Power
On-Off
“On” on FZ display when fan activated, “OFF” when deactivated.
58C
Ice Level Sensor Activates
automatically
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.
63C Twist Tray
Press Power
On-Off
Remove ice bucket.
FZ display shows “1” and “GOOD”.
IMPORTANT: PLEASE RETURN THIS SHEET TO ITS ORIGINAL LOCATION.
SYSTEM DIAGNOSTIC MODE
Activate: Press
FF + and -
for up to 10 sec. simultaneously. Press
FF
to advance through tests.
Deactivate: Press
FF +
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 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
on front UI.
34 Ambient Thermistor
@ 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.
46 Humidity Sensor Activates automatically “OP” if open, “SH” if short. AC Heater System: Displays %RH. DC Heater
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.
36 Ice Chute Door Depress ice chute door
or press
Power On-Off
“OP” on UI when manually opened; “CL” when closed . Or using “power
on-off”, motor drive door open “OP” or closed “CL”.
47 Dispenser
Pocket Heater
Press Power On-Off
Heater on when “on’ off when “off”.
66 Dispenser Light
Press Power On-Off
Dispenser light on when “on”, off when “off”.
6- Front UI Firmware Press Power On-Off Displays digit sequence; record.
2 Freezer
Defrost Heater
Press Power On-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.
8 Water Valve
(Dispenser)
Press Power On-Off
FF door must be closed. Be prepared to collect water at dispenser.
Water dispenses when “on”; stops when “off”.
10 Auger Motor
Press Power On-Off
FF door must be closed. Motor running when “on”; motor stopped when “off”.
11 Cube/Crush
Solenoid
Press Power On-Off
FF door must be closed. Do not leave solenoid in activated state.
Solenoid activated when “on”; deactivated when “off”.
12 Condenser Fan
Press Power On-Off
Fan running when “on”; stopped when “off”.
43 Mullion Anticonden-
sation Heater
Press Power On-Off
Flip mullion heater on when “on”; off when “off”.
38 VCC Compressor
Press Power On-Off
Compressor running when “on”; off when “off”.
13 FF Lights
Press Power On-Off
FF lights on when “on”; off when “off”.
15 Freezer
Evaporator Fan
Press Power On-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.
20 FZ Lights
Press Power On-Off
FZ lights on when “on”, off when “off”.
22 Damper
Press Power On-Off
Perform test 15 and set fan to “HI”. Then check for air ow when open
“OP”; and no air leaks when closed “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 Ice Maker
Defrost Heater
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.
29 FF Thermistor Activates automatically UI shows temperature sensed by FF thermistor; pass if within 10°F of
temperature measured with gauge at FF thermistor location. “OP” if
open; “SH” if short.
30 FZ Thermistor Activates automatically UI shows temperature sensed by FZ thermistor; pass if within 10°F of
temperature measured with gauge at FZ thermistor location.“OP” if
open; “SH” if short.
33 Ambient Thermistor
@ Main Board
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.
39 Freezer Evaporator
Thermistor
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.
45 Ice Maker Mold
Thermistor
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.
68 Ice Maker
Evaporator Thermistor
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.
0- Firmware Parameters
Press Power On-Off
Displays digit sequence; record.
1- Main Board Firmware
Press Power On-Off
Displays digit sequence; record.
3- UI Firmware Press
Power On-Off
Displays digit sequence; record.
IMPORTANT SAFETY NOTE
The information provided herein is designed to assist qualied 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.
T
U
R
N
Mounting
Plate
Screws
Mounting
Plate
Screw
Motor
Gear
Timing
Gear
Water Fill
Adjustment
FREEZER ICE MAKER INFORMATION
(Where Applicable)
Test Cycling: Remove cover by inserting screwdriver in notch at bottom
and prying cover from housing. Use screwdriver to rotate motor gear coun-
terclockwise 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.
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
Description
FZ FF
IC
− Min Fill Time (default)
= Mid Fill Time
= Max Fill Time
VCC COMPRESSOR MOTOR RESISTANCE CHECK
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