SERVICE DATA SHEET
240389648
ICE & WATER - AUTOMATIC DEFROST
SIDE BY SIDE - R134a
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.
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.
IMPORTANT: PLEASE RETURN THIS SHEET TO ITS ORIGINAL LOCATION
Diagnostic Mode
Activate: Press FZ UP and FZ DOWN temperature pads 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 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, 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
Press power on-off Compressor running when “on”; stopped when “off”
2Defrost Heater Press power on-off 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.
3FF Light Press power on-off With FF door open, FF lights on when “on”; off when “off”
8Water 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”
9FZ Light Press power on-off With FZ door open, FZ lights on when “on”, off 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”
41* Perfect Temp Drawer
(PTD)
Press power on-off PTD UI illuminated when “on”, off when “off”
12* VCC Condenser Fan Press power on-off Fan running when “on”; stopped when “off”
38* VCC Compressor Press power on-off Compressor running when “on”; stopped when “off”
15 Evaporator Fan Press power on-off 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”.
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
26 Defrost Limit Switch Activates automatically “CL” on UI when closed; “OP” when open
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”, “OP” on UI when solenoid activated, “CL” when deactivated
29 FF Thermistor
Mid-level
Activates automatically 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 automatically UI shows temperature sensed by FZ thermistor; pass if within 10°F of temperature
measured with gage 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
35 FF Thermistor
Upper-Level
Activates automatically 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 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
0- Firmware
Parameters
Press power on-off Displays digit sequence; record
2- Main Board
Firmware
Press power on-off Displays digit sequence; record
4- UI Firmware Press power on-off 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
PERFORMANCE DATA NO LOAD & NO DOOR OPENINGS AT 0° F FREEZER & 37° F
FRESH FOOD (2500 ++ V5)
Type A with Run/Start
Capacitor
65°F (18°C) Ambient 90°F (32°C) Ambient
Variable Speed Standard Variable Speed Standard
Operating Time 74 to 84% 32 to 40% 100% 55 to 65%
Freezer Temperature -2° to 2° F
-19° to -17° C
0° to 4° F
-18° to -16° C
-1° to 3° F
-18° to -16° 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
34° to 39° F
1° to 4° C
34° to 39° F
1° to 4° C
Low Side Pressure (cut-in) 5 to 12 psig
43 to 83 kPa
5 to 12 psig
43 to 83 kPa N/A 5 to 12 psig
43 to 83 kPa
Low Side Pressure (cut-out) -2 to 2 psig
-14 to 14 kPa
-2 to 2 psig
-14 to 14 kPa
-2 to 2 psig
-14 to 14 kPa
-2 to 2 psig
-14 to 14 kPa
High Side Pressure
(last 1/3 cycle)
90 to 105 psig
621 to 724 kPa
90 to 115 psig
621 to 793 kPa
120 to 135 psig
827 to 931 kPa
130 to 155 psig
896 to 1069 kPa
Wattage (last 1/3 cycle) 50 to 60 90 to 130 60 to 70 100 to 140
Amps (running) 0.5 to 0.9 0.7 to 1.1 0.6 to 1.0 0.8 to 1.2
Base Voltage 115 vac (127 vac max)
DEFROST SPECIFICATIONS
Cabinet Size
Thermostat Heater
Cut-in Cut-out Watts Ohms
23’ CD, 26’ 25° F (-4° C) 47° F (8° C) 450 30
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
Error Codes Special Modes
Display
Interpretation Mode
Display Activate/Deactivate
(press for up to 10 sec.
simultaneously)
FZ FF FZ FF
-- OP-Open FF mid-level
thermistor
Manual
Defrost
d F FF UP and FF DOWN/
same to deactivate
-- OP¯Open FF upper-level
thermistor
Display/
Showroom
77 77 FZ UP and FF DOWN/
Power-on-Reset (POR)
OP -- Open FZ thermistor Sabbath Sb Sb FZ DOWN and FF UP/
same to deactivate
-- SH-
Shorted FF mid-level
thermistor
Diagnostic No FF or FZ display,
all UI LEDs on.
FZ UP and FZ DOWN/FF
UP to deactivate
-- SH¯Shorted FF upper-level
thermistor
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.
SH -- Shorted FZ thermistor
SY CF
UI to Main Control Board
communication failure;
on start up
SY CE UI Main Control Board
communication error;
after a period in operation
SY EF Evaporator fan failure
