Samsung RF265AA**/XAA Fast Track Troubleshooting page 2

Brushless DC Fan motors are used to save energy. The fans operate at two speeds. Fan speed information is read by
the Main PCB. If the fan speed exceeds 600 RPM or the speed is too slow, or stopped the fan drive circuit is disabled,
After 10 seconds the circuit tries again with 3 seconds of DC voltage. If the fan continues this activity for 5 cycles, 10
seconds off 3 seconds on, the fan drive circuit is disabled for 10 minutes.
TO TEST THE FAN CIRCUIT VOLTAGE.
Power off and back on to check the DC voltage to the motor, wait from 10 to 60 seconds for the fan voltage to kick in,
and then check fan voltage, the average reading is 9 VDC. If you get 3 seconds of voltage every 10 seconds for the 5
fan power up cycles, then the Main PCB is good.
NOTE: You may need to put unit in FORCED FREEZE mode to activate the fans/compressor.
If the fan blade is blocked by ice, then defrost and check the motor again, after removing power from the unit.
If the evaporator is ice blocked and thus blocking the air flow, the fan will over RPM and will be stopped. Remove ice
and check the motor again. If everything is clear around the fan blade then the motor would be at fault. Continuous fan
errors will be displayed on the front panel display. PLEASE NOTE: The door switches control the evaporator fan mo-
tors. Have them closed to test the motors. Delay time 10 – 60 seconds.
FLEX TRAY Ice Makers
When the initial power is applied, the ice tray will stand by for 2
hours. After the 2-hour standby time, the Ice Maker Sensor will check
the temperature , when it is lower than 1.5
it will do a harvest, with or without ice in the tray, then fill with water.
58 minutes after water is supplied to the Ice Tray, the Ice Maker
Sensor temperature will be checked. When the Ice Maker Sensor
maintains lower than 1.5 for 5 minutes, it completes the harvest
(if the ice bin is not sensed as full).
Filling the tray
After the water fill is completed, the ice maker sensor will evaluate the
water volume one and a half minutes later. When it detects no or low
water level, it will add more water. First supply time will be 1.5 sec,
next one will be 1 sec and the last will be 2 sec.
FREEZER TEMPERATURE CONTROL BY THE ICE MAKER
Interior Temperature of the freezer will be set to -14 degrees
Fahrenheit until the ice bucket is full. When the ice bucket is full,
the freezer will maintain original set temperature. Also, when-
ever the ice is used, the freezer will again set to -14 degrees
Fahrenheit. Selecting "Ice Off" will allow the freezer to be con-
trolled by the set temperature. If water is not hooked up, the
freezer will always be at –14 unless "Ice Off" is selected.
Temperature/Resistance/Voltage Chart for Samsung Refrigerators Sensors
Temp. (Ω) Volts
-29.2°F 64227 4.326
-27.4°F 61012 4.296
-25.6°F 57977 4.264
-23.8°F 55112 4.232
-22.0°F 52406 4.199
-20.2°F 49848 4.165
-18.4°F 47431 4.129
-16.6°F 45146 4.093
-14.8°F 42984 4.056
-13.0°F 40938 4.018
-11.2°F 39002 3.98
-9.4°F 37169 3.94
-7.6°F 35433 3.899
-5.8°F 33788 3.858
-4.0°F 32230 3.816
-2.2°F 30752 3.773
-0.4°F 29350 3.729
DC FAN MOTORS
for more than 5 minutes,
Temp. (Ω) Volts
1.4°F 28021 3.685
3.2°F 26760 3.64
5.0°F 25562 3.594
6.8°F 24425 3.548
8.6°F 23345 3.501
10.4°F 22320 3.453
12.2°F 21345 3.405
14.0°F 20418 3.356
15.8°F 19537 3.307
17.6°F 18698 3.258
19.4°F 17901 3.208
21.2°F 17142 3.158
23.0°F 16419 3.107
24.8°F 15731 3.057
26.6°F 15076 3.006
28.4°F 14452 2.955
30.2°F 13857 2.904
Shattered Ice – Flex Tray
When all ice shatters, it's because of a bad tray
or ice cube temp that is too cold (lower than -5
degrees). In some areas, there are water issues
that can also cause shattered cubes. The temp
in the freezer should not have any effect on this
issue, as long as it's below 1.5 degrees F, as a
properly installed sensor will not read the
freezer temp, only the water/ice temp.
Check the Ice tray for defects in the plastic. Ice
that is too cold will shatter during
vest. This can be from the (1) sensor not read-
ing the correct temp (2) or the sensor not
mounted correctly (3). By programming the ice-
maker offset value to a lower number (4), the
board not understanding the reading.
Please note, some shattering is normal for a
flex tray icemaker.
Ice Maker Thermistor
Ice Maker Test Button
Temp. (Ω) Volts
32.0°F 13290 2.853
33.8°F 12749 2.802
35.6 °F 12233 2.751
37.4 °F 11741 2.7
39.2 °F 11271 2.649
41.0°F 10823 2.599
42.8°F 10395 2.548
44.6°F 9986 2.498
46.4°F 9596 2.449
48.2°F 9223 2.399
50.0°F 8867 2.35
51.8°F 8526 2.301
53.6°F 8200 2.253
55.4°F 7888 2.205
57.2°F 7590 2.158
59.0°F 7305 2.111
60.8°F 7032 2.064
har-
Temp. (Ω) Volts
62.6°F 6771 2.019
64.4°F 6521 1.974
66.2°F 6281 1.929
68.0°F 6052 1.885
69.8°F 5832 1.842
71.6°F 5621 1.799
75.2°F 5225 1.716
77.0°F 5000 1.675
78.8°F 4861 1.636
80.6°F 4690 1.596
86.0°F 4218 1.483
87.8°F 4072 1.447
89.6°F 3933 1.412
91.4°F 3799 1.377
95.0°F 3547 1.309
96.8°F 3428 1.277
100.4°F 3204 1.213
2