115 VAC Circuit Trace
WARNING
115 volt potential exposure. Use caution making voltage checks to avoid
personal injury.
LED status:
None, control LED not on or flashing.
Disconnect cord set as shown in photo 9.
Using a volt meter set to volts AC, is there 115VAC across terminals shown in photo 10?
Y
Is there 115VAC across terminals shown in photo 11?
N
Incorrect supply voltage polarity.
LED status: | LED status: |
Short flash | “Heartbeat”, |
once every four | alternates |
seconds. | bright/dim. |
Waiting for call | Thermostat call- |
for heat. | ing for heat. |
9 | 10 |
N
|
| Check for damage | Y |
|
|
| |
|
| to AC supply |
|
N |
| ||
power cord. |
| ||
Reconnect cord set |
|
| |
shown in photo 9. | N |
| |
Replace blower. Disconnect wire har-
ness from gas control
(see photo 12).
Wire harness
LED status:
Various flash-
ing error codes.
Verify error
code as listed
on page 17.
11
Repair damage.
12
Locate black & white wires at connector, it may be necessary to pull back wire sheath to identify wire colors (see photo 13).
Is there 115VAC across | Y | |
Replace gas control. | ||
black & white wire as | ||
| ||
shown in photo 13? |
| |
N |
| |
Call for technical support. |
|
13
Wire sheath pulled back to
identify wire colors
Check for 115VAC between black and white wires.
Electronic meter probes required. Use car not to
damage connector during this check.
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