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DIAGNOSTICS - cont'd.
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. 3. Refer to Fig. 4 - Fig. 5.5 for diagnostic
instructions.
A1
A2
Fig. 3 - 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"
Connecting the LED
Refer to Fig. 3, and Figs. 4.1-5.5
1. Attach the two (2) female blade connectors
wire leads of the LED
(A)
1
1
A
Fig. 4.1 - Attach blade connectors
2. On the control module
(E)
from the
terminal
(C)
"+"
2
2
Fig. 4.2 - Disconnect 12 VDC
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A
B
(A1, A2)
.
A2
A1
, disconnect the 12 VDC input wire
.
(D)
D
_
C
12/24 Vdc
+
+
F
D
C
E
P
T
3. Connect the blade adapter (
3
3
4. Connect the black LED wire
the red LED wire
4
4
5. Connect the 12 VDC input wire
to the
blade
5
5
NOTICE
Reading the LED
If an error code is activated in the control module (Fig. 5.2, E) and
the LED (Fig. 4, A) is connected, it will fl ash a number of times. The
number of fl ashes will depend on what error was recorded. Each
fl ash will last 1/4 second and after the code is fl ashed there will be
a delay, then the code will repeat.
Write down all error codes; then refer to "Self-Test Diagnostic
Chart" in this section.
9
) to the
B
"+"
B
Fig. 4.3 - Connect blade adapter
(A1)
to terminal "D"
(A2)
to the one side of blade
_
A2
12/24 Vdc
+
+
F
D
C
P
A1
T
Fig. 4.4 - Connect LED
to the other side of adapter
(C)
C
_
12/24 Vdc
+
+
F
D
C
P
T
Fig. 4.5 - Connect 12 VDC
Do NOT leave jumpers in place for normal
operation.
(
) terminal.
D
_
D
12/24 Vdc
+
+
F
D
C
P
T
(F)
; connect
(B)
.
C
F
D
SERVICE MANUAL
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