Wiring Diagram

SERVICE DATA SHEET
A06031201
FREEZER ICE MAKER - AUTOMATIC DEFROST
BOTTOM FREEZER - R134a
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
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.
IMPORTANT: PLEASE RETURN THIS SHEET TO ITS ORIGINAL LOCATION.
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
Heater
Termination
Cut-in Cut-out Watts Ohms Cut-out
110°F
(43.3°C)
135°F
(57.2°C)
500 26.5 48°F
(8°C)
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
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.
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 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.
SYSTEM DIAGNOSTIC MODE
Activate: Press FZ UP and FZ DOWN for up to 10 sec. simultaneously. Press FF UP to advance
through tests.
Deactivate: Press FF UP 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 -- Blank UI display, no LEDs illuminated.
-- Second Screen -- All LED lights on UI illuminated.
-- Third Screen -- Blank UI display, no LEDs illuminated.
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.
2 Freezer
Defrost Heater
Press power on-off Freezer defrost heater on when “on”; off when “off”. Evaporator
thermistor temperature is flashed. Watch for temp increase with the
heater on. It may take a few minutes for the evaporator to heat up.
3 FF Lights powered
by external board
Press power on-off FF lights on when “on”; off when “off”
12 Condenser Fan Press power on-off Fan running when “on”; stopped when “off”
41 Perfect Temp
Drawer (PTD)
Press power on-off PTD UI illuminated when “on”; off when “off”
43 Mullion Anticon-
densation Heater
Press power on-off Flip Mullion Heater on when “on”; off when “off”
38 VCC Compressor Press power on-off Compressor 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 flashed (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 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
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 Thermis-
tor @ 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
34 Ambient Thermis-
tor @ UI
Activates
automatically
UI shows temperature sensed at UI; pass if within +20°F/-10°F
of temperature measured with gauge at UI location. “OP” if open;
“SH” if short
39 Freezer Evapora-
tor Thermistor
Activates
automatically
UI shows temperature sensed by freezer evaporator thermistor; pass
if within 10°F of temperature measured with gauge at evaporator
thermistor location. “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
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 / Show-
room
77 77 FZ + and FF - Unplug to
deactivate
-- SH Shorted FZ
Cavity Thermistor
Sabbath Sb Sb FZ - and FF + Same to
deactivate
SH -- Shorted FZ Thermistor System Diag-
nostic
Blank UI dis-
play, no LEDs
illuminated
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 Temp
Mode Buttons
Automatically
after 10 seconds
SY CE UI to Main Board
communication
error; after a period
of operation
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 EF Freezer Evaporator
Fan Failure
Service Mode For Perfect Temp™ Drawer
Activation
This mode is accessible only
when the drawer is in OFF
mode. Press and hold the
temperature decrease key (–)
and the temperature increase
key (+) for 5 seconds.
Deactivation
Press and hold the tempera-
ture (+) key for 5 seconds,
or no keys pressed in 5 min-
utes returns to the OFF mode
of operation.
Test Operation
The up/down buttons
will be used to navigate
through the tests and
the ON/OFF button will
be used to initiate the
displayed test.
Fan Test
Display shows “F1”
for fan on or “F0” for
fan off.
Heater Test
Display shows “H1” for
heater ON or “H0” for
heater OFF.
Damper Test
Display shows “d1”
for damper open,
or “d0” for damper
closed. Damper
movement may take
30 seconds.
To Test Damper
1. Remove drawer.
2. Start damper test.
3. Observe damper
moving open
and closed.
4. Exit damper test.
Report NTC
Temperature Test
Display shows “b1” for
chamber sensor test. The UI
display will show —°F until
the main board responds
with associated sensor
temperature reading.
Display Test
“L0” for display test. The
display test will cycle
through all the display seg-
ments with a minimal on
time for each segment.
Fault Codes Listed on Diagram Sheet
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
VCC COMPRESSOR MOTOR RESISTANCE CHECK