Self -Test Diagnostics, cont’d.
10
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N8DCX, N10DCX Models
Self-Test Diagnostic Chart
Flashes
Description
Action
1
Battery Protection Cut-Out.
The voltage is outside the cut out setting.
Perform
Test A.
2
Fan Over current Cut-Out.
The fan electrical load is more than 1.0 amp.
Perform
Test B.
3
Motor Start Error.
The rotor is blocked or the differential pressure in the
refrigeration system is too high ( >5 bar).
Perform
Test C.
4
Minimum Motor Speed Error.
The motor can not maintain minimum speed (1850 rpm).
Perform
Test D.
5
Thermal Cutout of Electronic Unit.
The electronic unit is running too hot.
Perform
Test E.
6
Controller Hardware Failure
Controller detects abnormal parameters
Perform
Test K.
Diagnostic Symptom Chart
Problem
Possible Cause
Action
to Take
Not cooling, not
turning on.
-
Faulty thermistor.
-
No power to control module.
-
Faulty wire from control module to compressor
-
Faulty control module.
-
Faulty Compressor.
Perform
Test F.
Refrigerator gets
too cold.
-
Bad capillary tube position.
-
Faulty thermistor
-
Faulty control module.
Perform
Test G.
Refrigerator
builds frost inside.
-
Door not closed.
-
Damaged door gasket.
Perform
Test H.
Runs, but does
not cool properly.
-
High ambient temperatures .
-
Blocked air ventilation.
-
Frost build up.
-
Condenser coil restricted.
-
Faulty condenser fan.
-
Faulty cooling unit.
Perform
Test I.
Will not run on
DC power.
-
Blown fuse in DC circuit.
-
Undersized wiring to refrigerator, minimum #12
gauge wire required.
-
Refer to Owner's Manual for recommended wire
size.
-
Partially discharged battery, voltage below 11.3
VDC at compressor module.
-
High resistance (voltage drop) in supply circuit.
Perform
Test J.
Voltage within
range; refrigerator
cuts out.
-
Parts can cause a + / - 10 VDC which can cause
refrigerator voltage to register within specifi cation,
but cutout because of part variance.
Perform
Test K.
Electronic Controls Fault Code Chart
Fault Code
Fault Code Meaning
Action to Take
E1
The thermistor in the fresh food compart-
ment is not cycling properly.
Refer to "Fault Code -
"E1"" on page 24.
E2
The thermistor in the freezer compartment
is not cycling properly.
Refer to "Fault Code -
"E2"" on page 25.
E3
The voltage is outside the cut out setting.
Refer to "Fault Code -
"E3"" on page 26.
E4
The fresh food compartment door has
been open for more than two (2) minutes.
Refer to "Fault Code -
"E4"" on page 26.
Step 3. Connect Adapter
Connect the adapter to the positive terminal of the control module.
Step 4. Connect LED
Connect the black LED wire to one side of the adapter; connect the
red LED wire to terminal “D” of the control module.
Step 5. Connect 12VDC
Connect the 12 VDC input wire to the other side of the adapter.
Do NOT leave jumpers in place for
normal operation.
Fig. 4.4 - Adapter
C
_
+
+
F
D
C
P
T
12/24 Vdc
E
NOOOO19A-3b
Fig. 4.5 - LED
_
+
+
F
D
C
P
T
12/24 Vdc
A1
F
C
A2
NOOOO19B-4b
NOTICE
Fig. 4.6 - 12VDC
D
_
+
+
F
D
C
P
T
12/24 Vdc
C
NOOOO19A-5b
NOOOO19A-3b
