Trane 4TWL6036A1000A, Service Facts

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4TWL6036A-SF-1F-EN 11
Table 1. Defrost Control Thermistor Table
TEMP °F TEMP °C
THERMISTOR
RESISTANCE
(OHMS)
Volts DC
-15.00 -26.11 135976 2.50
-10.00 -23.33 115112 2.40
-5.00 -20.56 97745 2.29
0.00 -17.78 83247 2.17
5.00 -15.00 71108 2.05
10.00 -12.22 60916 1.93
15.00 -9.44 52333 1.81
20.00 -6.67 45076 1.69
25.00 -3.89 38927 1.56
30.00 -1.11 33703 1.45
35.00 1.67 29253 1.33
40.00 4.44 25452 1.22
45.00 7.22 22198 1.12
50.00 10.00 19405 1.02
55.00 12.78 17002 0.93
60.00 15.56 14930 0.85
65.00 18.33 13138 0.77
70.00 21.11 11586 0.70
75.00 23.89 10238 0.63
80.00 26.67 9065 0.57
85.00 29.44 8043 0.52
90.00 32.22 7150 0.47
95.00 35.00 6368 0.42
100.00 37.78 5682 0.38
105.00 40.56 5079 0.35
110.00 43.33 4548 0.31
115.00 46.11 4079 0.28
120.00 48.89 3665 0.26
125.00 51.67 3298 0.23
130.00 54.44 2972 0.21
135.00 57.22 2683 0.19
Example:
Sensor temp. = 19°F
Measured Resistance = 46K ohms
This sensor is good since the measured value is
relatively close to the chart value.
Table 2. DEMAND DEFROST QUICK SPECS
COMPRESSOR SCROLL SCROLL
MNEMONIC NO
CNT
CNT08177 CNT08176
GROUP NOMENCLATURE (a) D161244G01 D161246G02
SUPERSEDURE
CNT
07824 07825
OD FAN TYPE – PSC/ECM PSC ECM
1-SPD 1-SPD
DEFROST ENABLED: Y = ON
COIL TEMPERATURE ≤52 °F (b) ≤52 °F
DEFROST PERMIT: Y = ON
COIL TEMPERATURE
≤32 °F ≤32 °F
MIN DEFROST TIME (MINUTES)
1 1
TARGET DEFROST TIME
(MINUTES)
4 4
MAX TIME OVERRIDE (MINUTES
+)
15 15
DEFROST TERMINATE COIL
TEMPERATURE (Factory Setting)
47°F 47°F
DEFROST HI TERMINATE COIL
TEMPERATURE (Cut Jumper 2)
70° F 70°F
SOV SWITCH-OVER DELAY
AFTER DEFROST TERM.
(SECONDS)
12 12
DEFEAT SWITCH-OVER DELAY
(SECONDS) (Cut Jumper 1)
0 0
LOW AMBIENT HEAT PUMP LOCK
OUT
-12°F -12°F
LOW AMBIENT HEAT PUMP
RESUME
-3 -3
LPCO INPUT TO CONTROL YES YES
LPCO BYPASS IN/OUT DEFROST
(MINUTES)
3 3
(a) GROUP suffix for drawing number D
(b) ≤ (EQUAL OR LESS THAN)
Table 3. LED FAULT CODES
LED
FAULT
CODES
FAULT DESCRIPTION
DEFROST
CONTROL
BEHAVIOR
1 FLASH
Ambient Temp Sensor is out
of range (open/shorted)
Initiate defrost after
every 60 minutes of
runtime. Defrost will
terminate on coil
temp. See Note 1 & 2.
2 FLASH
Coil Temp Sensor is out of
range (open/shorted)
Initiate a 15 minute
forced defrost after
every 60 minutes of
runtime. See Note 1 &
2.
3 FLASH
Low Pressure Switch is open
3 flash goes away
when/if LPCO closes.
4 FLASH
Hard Lock Out (can only be
cleared with a low voltage
power cycle)
Occurs after 9
th
trip
of LPCO. See Note 6.
D De effrro osstt C Co on nttrro oll