Aqua-Hot AHE-100-02S, Руководство по обслуживанию

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— Page 66 —
© 2011 Aqua-Hot
®
AHE-100-02S Hydronic Heating System Service Manual—Rev. B
Ignition Coil:
The ignition coil produces a high voltage ignition
spark (approx. 8000 volts), which is released across
the metal tips of the ignition electrodes during the
initial diesel-burner start-up.
Use extreme care when testing the ignition coil, as a High
Voltage Shock may result.
Component Test:
1.
Remove the four ignition coil screws that secure the
ignition coil in place.
2.
Disconnect the ignition coil’s black (+) and brown
(-) wires from the C-plug harness’ yellow (+) and
brown (-) wires.
3.
Connect the ignition coil wires directly to a 12 volt
DC power supply (i.e. black (+) wire to (+) lead and
brown (-) wire to (-) lead).
4.
Turn the power supply
ON
and watch for a spark to
appear across the metal tips of the ignition elec-
trodes. If a spark does not appear, the ignition coil
must be replaced.
NOTE:
In order to perform the following procedures it is
necessary to detach and reattach the diesel-burner
head. Be sure to review the section for detaching
and reattaching the diesel burner..
Before replacing the ignition coil:
1. Verify the ignition electrodes are not cracked or broken.
2. Verify that the ignition electrodes are adjusted properly.
3. Ensure the electrode boots are securely holding the
electrodes in place.
4. Ensure the electrode boots are not broken inside the igni-
tion coil wires.
NOTE: Some ignition coils are intermittent and will need
to be tested numerously
Figure 51
S
ECTION
8: D
IESEL
-B
URNER
C
OMPONENTS
/T
ROUBLE
S
HOOTING