Diagnostics; Diagnostic Pre-Checks; Self-Test Diagnostics; Connecting The Led - Norcold DE105 Manuel

Diagnostic Pre-Checks

Before performing detailed diagnostics inspect for the following:
1. Make sure the refrigerator is turned ON.
2. Make sure the door is closed and sealing correctly.
3. Make sure the refrigerator is correctly installed and that the
vents are not blocked.
There may be more than one over current
NOTICE
device in the refrigerator supply circuit.
Be sure to check both the RV and refrig-
erator.
4. Make sure the vehicle fuse or circuit breaker is intact.
5. Make sure the ambient temperature is not unusually high (more
than 110° F. / 43° C.). Maximum ambient temperature is 131
6. Make sure that the air circulation inside the refrigerator is not
decreased by foods or by shelves that are covered with plastic,
paper, etc.
7. Make sure the freezer is defrosted.
8. Bypass the thermostat by disconnecting the wires and install-
ing jumper wire in place of thermostat. If unit works replace
thermostat.
After these pre-checks, if the refrigerator does not operate:
9. Remove unit from its enclosure; refer to "Remove and Install"
section.
10. Perform the diagnostics outlined in the "Self Diagnostics" sec-
tion.
11. If the self-test diagnostic tests do not reveal an error code, refer
to the "Diagnostic Symptom Chart" table.

Self-Test Diagnostics

The unit's control module is equipped with a self-test diagnostic
function which can be read using a light emitting diode (LED). To
access the error codes displayed in the control module, you will
need the items in Fig. 2. Refer to Fig. 3 - Fig. 3.5 for diagnostic
instructions.
A1
A2
Fig. 2 - LED and connectors
Reference Description
A (1x) 10 mA LED with wire leads
A1 (1x) 1/4 inch push-on female connectors (Black)
A2 (1x) 1/4 inch push-on female connectors (Red)
B 1/4 inch adapter with one (1) female and two (2) male connections
C 12 VDC Input Wire
D 12 VDC Terminal "+"
E Control Module
F Terminal "D"
Fig. 3 - LED, connectors and control module
DE105

DIAGNOSTICS

° F.
A
B
6

Connecting the LED

Refer to Fig. 2, and Figs. 3.1-3.5
1. Attach the two (2) female blade connectors
wire leads of the LED (A)
1 1
A
Fig. 3.1 - Attach Blade Connectors
2. On the control module
(E)
(C) from the "+" terminal
2 2
C
E
Fig. 3.2 - Disconnect 12 VDC
3. Connect the blade adapter (
3 3
B
Fig. 3.3 - Connect Blade Adapter.
4. Connect the black LED wire
the red LED wire to the one side of blade
(A2)
4 4
A2
Fig. 3.4 - Connect LED
(A1, A2)
.
A2
A1
, disconnect the 12 VDC input wire
(D) .
D
_
12/24 Vdc
+
+
F
D
C
P
T
B ) to the "+" ( D ) terminal.
_
D
12/24 Vdc
+
+
F
D
C
P
T
(A1) to terminal "D" (F)
.
(B)
_
B
12/24 Vdc
+
+
F
F
A1
D
C
P
T
www.norcold.com
to the
; connect