SERVICE DATA SHEET
242288302
ICE & WATER - AUTOMATIC DEFROST
SIDE BY SIDE - 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.
Diagnostic Mode
Activate:
Press ^ and
V
temperature pads 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 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
and Condenser Fan
Press set
Compressor and Condenser Fan running when “on”; stopped when “off”
2
Defrost Heater
Press 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
Press set
With FF door open, FF lights on when “on”; off when “off”
8
Water Valve
(Dispenser)
Press set
Be prepared to collect water at dispenser.
Water dispenses when “on”; stops when “off”
9
FZ Light
Press set
With FZ door open, FZ lights on when “on”, off when “off”
10
Auger Motor
Press set
FZ door must be closed.
Motor running when “on”; motor stopped when “off”
11
Cube/Crush
Solenoid
Press set
Do not leave solenoid in activated state.
Solenoid activated when “on”; deactivated when “off”
41*
Perfect Temp
Drawer (PTD)
Press set
PTD UI illuminated when “on”, off when “off”
12*
VCC Condenser Fan Press set
Fan running when “on”; stopped when “off”
38*
VCC Compressor
Press set
Compressor running when “on”; stopped when “off”
15
Evaporator Fan
Press 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”.
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
Defrost Limit Switch
Activates automatically
“CL” on UI when closed; “OP” when open
36
Ice Chute Door
Depress ice chute door
or
press set
“OP” on UI when manually opened; “CL” when closed. Or, using “set”,
“OP” on UI when fully opened or "CL" when fully closed by the motor.
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 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 20°F/-10°F of tem-
perature measured with gauge at UI location. “OP” if open; “SH” if short
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”
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
V
ar
iab
le Capacity Compressor (VCC) Diagnostics (select models)
If test 38 f
ails
, diagnose as f
ollo
ws:
Replace
Inverter
→
Check
at
the
connector
from
main
control
into
the
inverter
(typically
BLK
and
RED
wires)
Is Invert
er
recei
vi
n
g
10-15 VAC and
1-5
VDC
fr
om
Main Control?
→
Check
at
Main
Control
Board
(B
LK
/W
HT
an
d R
ED
/B
LK
w
ire
s)
Is Main Control send
in
g 10-15 VAC
an
d 1
-5
V
D
C
t
o
In
ve
rt
er
?
no
→
Check
at
the connector from
the
service
cord
into
the
inverter
(typically
PUR
and
WHT
wir
es.)
Is
I
n
ve
rt
er
r
ec
ei
vi
n
g
1
1
5
VAC fro
m
po
wer supply?
yes
•
Ch
ec
k
vo
lta
ge
s
up
pl
y.
•
Check
and
repair
se
rv
ic
e
co
rd
w
iri
ng
and co
nnectio
ns.
no
Id
en
tif
y
an
d
re
pa
ir
damaged wires or
poor
co
nnectio
ns between
M
ai
n C
on
tr
ol
a
nd
Inverter
yes
→
Remove inverter
box
fr
om
t
he
c
om
pr
es
so
r
and check resistance across c
om
pressor
w
in
di
ng
p
ai
rs
a
s
sh
ow
n.
Is
r
es
is
ta
n
ce
a
cr
os
s
all winding
pairs
equal?
yes
Replace
Compressor
no
→
Check
co
nnectio
ns
fr
om
I
nv
er
te
r
t
o
Compressor
Are connections fro
m
I
n
verter
to
C
om
pr
es
so
r i
n
ta
ct
?
yes
yes
Id
en
tif
y
an
d
re
pa
ir
damaged wires or
poor
co
nnectio
ns between
Inverter and
Compressor.
no
V
C
C
R
es
is
ta
n
ce
C
h
ec
k
Check
resistance
between
terminals
1
and
2,
2
and
3,
3
and
1.
If all resistances
are
equal,
co
m
pr
es
so
r
is
o
pe
ra
tiv
e.
Replace
Main
Control
no
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
OUT 1A
OUT 2A
OUT 1B
OUT 1B
ERF-2500++ V5 REFRIGERATOR CONTROL
NTC 1 - FF
NTC 2 - FF
NTC - FZ
DEFROST HEATER
DEFROST THERM.
NEUTRAL
CONTROL
GROUND
ICE FLAPPER SOLENOID
+5V
+5V
+5V
DC
EVAPORATOR
FAN
M
DAMPER MOTOR
M
FG
VCC(+12)
COM
VS
VCC
COMPRESSOR
CONDENSER
FAN
STANDARD COMPRESSOR
M
COMMON
HIGH
LINE
AMBIENT NTC
DEFROST SENSE
LINE
G5LE RELAY
LIN
E
NEUTRAL
AUGER MOTOR
LINE
CUBE/CRUSHED ICE GATE CONTROL
M
DOO
R
SWITCH
NEUTRAL
LINE
LINE
J3-16
J3-3
J3-3
J3-
7
DISPENSER VALVE
PRIMARY VALVE
ICE MAKER FILL VALV
E
ICE MAKER FILL SWITCH
G8P RELAY
J4-B1-6
J4-B1-1
J4-B1-2
J4-B1-3
J4-A1-9
J4-A1-3
J4-A1-10
J4-A1-4
J4-A1-11
J4-A1-5
J2-
1
J3-
2
J3-1
J2-2
J1-4
J4-B1-4
J4-A1-6
J4-A1-7
J4-B1-5
J4-A1-13
J4-A1-14
J8-
5
J8-
6
J8-
7
J8-
8
JF-
1
JF-
2
JF-
3
JF-
4
ASSY_OUT A5V GROUND
+5V RESET_FLASH BKGD/MSJ GROUND
J9A-1 J9A-2 J9A-3
VEE (+12V) COMM GROUND
ISOLATED
USER
INTERFACE
J1-1
J2-9 J2-10 J3-13 J3-14 J3-15 J3-16 J1-3 J2-7
NEUTRAL (SERVICE CORD)
NEUTRAL (CONDENSER FAN) NEUTRAL (WATER VALVE 1) NEUTRAL (NOT USED) NEUTRAL (COMPRESSOR) NEUTRAL (LED POWER SUPPLY) NEUTRAL (DISPENSER & ICE MAKER VALVE) LINE (SERVICE CORD
)
LINE (Vcc COMPRESSOR)
J6
-1
J6-2 J6-3 J6-4 J6-5 J6-6 J6-7 J6-8
ICE MAKER FAN POWER TWIST TRAY MOTOR DIRECTION
1
TWIST TRAY SWITCH NTC POWER ICE MAKER FAN GROUND TWIST TRAY MOTOR DIRECTION
2
TWIST TRAY SWITCH NTC FEEBACK
TWIS
T
ICE MAKE
R
ICE & WATER DISPENSER CONTROL
OPTIONAL
LED POWER
BOAR
D
J3-
1
J3-
4
J3-
3
NEUTRAL
FREEZER LIGHT
S
REFRIGERATOR LIGHTS
FZR DOOR SW. SENSE
J3-9 J3-10
J2-12
J3-8 J3-11
J2-6
LINE
FF DOOR SW. SENSE
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
+
and
-
/same to deactivate
--
OP¯
Open FF upper-level
thermistor
Display/
Showroom
77
77
^
and
-
/set
OP
--
Open FZ thermistor
Sabbath
Sb
Sb
V
and
+
/same to deactivate
--
SH-
Shorted FF mid-level
thermistor
Diagnostic
No FF or FZ display,
all UI LEDs on.
^
and
V
/+ 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
INCANDESCENT LIGHTING MODELS ONLY
FF DOOR SW. SENSE
REFRIGERATOR LIGHTS
FZR DOOR SW. SENSE
FREEZER LIGHTS
NEUTRAL
IMPORTANT: PLEASE RETURN THIS SHEET TO ITS ORIGINAL LOCATION
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.
