4-20
CNF1: Glow time
Indicates to the micro which engine is in the system
and which glow time should be used.
CNF2: Discharge sensor
Indicates to the micro if the Discharge sensor is
installed.
CNF3: high setpoint limit
Indicates maximum setpoint allowed and controls
functionalparameter lockout in conjunction withCNF11.
Default is: high speed not active and function lock not
active.
CNF4: Heat lockout override
Indicates to the micro if the heat lockout is
overridden.
CNF5: MOP enable / disable option
Configuration used to enable / disable the MOP
control of the unloaders. If enable MOP is chosen, then
the MOP will control the unloaders. If disable MOP is
chosen, then the unloaders will operate independent of
the suction pressure.
CNF6: Truck unit
Indicates to the micro if the system has been
selected for truck operation.
CNF7: Lock in high speed override
Indicates to the micro if lock in high speed is
overridden.
CNF8: Electric fan
Indicates to the micro if electric fans are being used.
CNF9: Out of range shut down
Indicates if main compartment out of range alarm
shuts unit down after 45 minutes.
CNF11: Functional parameters (keypad) lockout
option
In conjunction with CNF3, controls the functional
parameter keypad lockout options.
CNF13: Heat only unit operation option
Converts unit to a “heat only” unit.
CNF14: Invertable multitemp
Not used.
CNF15: Ultra Fresh II
Not used.
CNF16: Shut down with alternator aux alarm
If CNF16 is on, shut down in diesel when alternator
auxiliary signal is not present.
4.19.3
Controller sensor checkout
An accurate ohmmeter must be used to check
resistance values shown in Table 4-4.
Due to variations and inaccuracies in ohmmeters,
thermometers or other test equipment, a reading within
2% of the chart value would indicate a good sensor. If
a sensor is bad, the resistance reading will usually be
much higher or lower than the resistance values given
in Table 4-4.
At least one leadfrom the sensor (RAS, terminals D1
and E1 or SAS, terminals D2 and E2) must be
disconnected from the unit electrical system before any
reading is taken.
Not doing so will result in a false reading. Two
preferred methods of determining the actual test
temperature at the sensor, is an ice bath at 0
_
C (32
_
F)
or a calibrated temperature tester.
Table 4-4 Sensor Resistance (ATS, DTS, CDT,
RAS, SAS & WTS)
Temperature
ATS, DTS, RAS,
SAS & WTS
CDT
_
C
_
F
Resistance
In Ohms
Resistance
In Ohms
--28.9
--20
165,300
1,653,000
--23.3
--10
117,800
1,178,000
--17.8
0
85,500
855,000
--12.2
10
62,400
624,000
-- 6.7
20
46,300
463,000
-- 1.1
30
34,500
345,000
0
32
32,700
327,000
4.4
40
26,200
262,000
10.0
50
19,900
199,000
15.6
60
15,300
153,000
21.1
70
11,900
119,000
25
77
10,000
100,000
26.7
80
9,300
93,000
32.2
90
7,300
73,000
37.8
100
5,800
58,000
43.3
110
4,700
47,000
48.9
120
3,800
38,000
90
194
915
9,150
100
212
680
6,800
130
266
301
3,010
150
302
186
1,860
163
325
--
1,358
177
350
--
1,202