SERVICE MANUAL
9
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Self-Test Diagnostics
The unit’s control module is equipped with a "Self-Test Diagnostic"
function which can be read using light emitting diode (LED) and
terminal connectors.
Table of LED References
References for Figs. 4.1 - 4.6
Conducting the LED Evaluation
Follow the steps below. If an error code is activated in the control
module (Fig. 4.3, G) and the LED (Fig. 4.1, 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.
No. Description
A 10 mA LED With Wire Leads
A1 Black LED Wire (with connector attached)
A2 Red LED Wire (with connector attached)
B 1/4 Inch Push-On Female Connector (2x)
C 1/4 Inch Adapter With One (1) Female and Two (2) Male Connections
D 12 VDC Input Wire
E Positive (+) Terminal “+” of Control Module
F Terminal “D” of Control Module
G Control Module
Prepare to Connect the LED
You will need the following to conduct self-diagnostics:
■ A 10 mA LED with wire leads (See Fig. 4.1, A).
■ Two (2) 1/4 inch push-on female connectors (See Fig. 4.1, B).
■ A 1/4 inch adapter with 1 female to 2 male connections. (See
Fig. 4.1, C)
Do not leave jumpers in place for normal
operation.
Connect the LED
Refer to Figs. 4.2- through 4.6
Step 1. Attach Female Connectors.
Attach a female connector to each LED wire lead.
Step 2. Disconnect 12 VDC
Disconnect the 12 VDC input wire from the positive terminal of the
control module.
A
C
B
B
N000033A
Fig. 4.1 - LED
NOTICE
Fig. 4.2 - Female connectors
A
B
B
N000019A-1
G
Fig. 4.3 - 12 VDC
_
+
+
F
D
C
P
T
12/24 Vdc
NOOOO19A-2b
D
E
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