Wiring diagram

SERVICE DATA SHEET
A01870701
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.
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
110°F
(43.3°C)
135°F
(57.2°C)
500 26.5 39°F
(4°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
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
Activate: Press ٨ and ٧ for up to 10 sec. simultaneously.
Press + to advance through tests.
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 ow 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.
28 Dispenser Paddle Press disp. paddle “on” on UI when depressed; “off” when released.
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.
47 Dispenser
Pocket Heater
Press set AC Heater System: “--” ; test not available.
DC Heater System: heater on when “on”, off when “off”.
2 Freezer Defrost
Heater
Press set Freezer defrost heater on when “on”; off when “off”.
3* FF Light
(Incandescent Models)
Press set FF lights on when “on”; off when “off”
8 Water Valve
(Dispenser)
Press set FF doors must be closed.
Be prepared to collect water at dispenser.
Water dispenses when “on”; stops when “off”.
9* FZ Light
(Incandescent Models)
Press set FZ lights on when “on”, off when “off”.
10 Auger Motor Press set FF door must be closed.
Motor running when “on”; motor stopped when “off”.
11 Cube/Crush
Solenoid
Press set FF door must be closed. Do not leave solenoid in activated state.
Solenoid activated when “on”; deactivated when “off”.
12 VCC Condenser Fan Press set Fan running when “on”; stopped when “off”.
43 Anticondensation
Heater
Press set Flip mullion heater and dispenser pocket heater on when “on”;
off when “off”
38* VCC Compressor Press set Compressor running when “on”; stopped when “off”.
13* FF Light (LED Models) Press set FF lights on when “on”; off when “off”.
15 Evaporator Fan Press set Stopped when “off”. Listen for speed change from “LO” to “HI”.
20* FZ Light (LED Models) Press set FZ lights on when “on”, off when “off”.
22 Damper Press 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 Ice Maker
Defrost Heater
Activates automatically Relay is activated automatically. If “CL” is shown, defrost limit switch is
closed and heater should be heating up. If “OP” is shown, defrost limit
switch is open and heater will not activate.
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.
34* Ambient
Thermistor @UI
Activates automatically 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.
39 Evaporator
Thermistor
Activates automatically UI shows temperature sensed by evaporator thermistor; pass if within 10°F
of temperature measured with gauge at evaporator thermistor 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.
0- Firmware Parameters Press set Displays digit sequence; record.
2- Main Board Firmware Press set Displays digit sequence; record.
4- UI Firmware Press 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 display,
all UI LEDs on.
٨ and ٧/ + to deactivate
SY CF
UI to Main Control
Board communication
failure; on start up
FFIM Diagnostic Numerical display of
rst test
٨ and + together to activate /
press and hold + to deactivate
SY CE
UI to Main Control
Board communication
error; after a period
in 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 Evaporator Fan Failure
FRESH FOOD ICE MAKER DIAGNOSTIC MODE
Activate: Press ٨ and + temperature pads for up to 10 sec. simultaneously.
Press + or - to move forward or backward through tests.
Deactivate: Press + 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 Set 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 Set “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 Set Remove ice bucket.
FZ display shows “1” and “GOOD”.
IMPORTANT: PLEASE RETURN THIS SHEET TO ITS ORIGINAL LOCATION.
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 hous-
ing. 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.