Aqua-Hot AHE-100-02S -12 VDC Owner's Manual page 42

S S S S S ection 6: ection 6: T T T T T r r r r r oubleshooting ection 6: ection 6: ection 6: oubleshooting oubleshooting oubleshooting oubleshooting
Does the spark
reappear?
No
1. Turn the Control Switch OFF.
2. Replace "CONTROL UNIT" (#1),
see Figure 7.
3. Reconnect "FUEL SOLENOID
VALVE" (#6) (see Figure 13) wire.
4. Reattach "DIESEL-BURNER
HEAD" (see Figure 9) and attempt
heater restart.
1. Replace "FUEL SOLENOID VALVE" (#6),
see Figure 13.
2. Retest fuel flow (without Fuel Nozzle).
3. Install "FUEL NOZZLE" (#9), see Figure 12.
4. Retest Fuel Nozzle spray pattern (fine mist of
fuel present?).
5. Reconnect ignition wires to "IGNITION
ELECTRODES" (#8) (see Figure 11) or
remove jumper wire.
6. Reattach "DIESEL-BURNER HEAD" (see
Figure 9) and attempt heater restart.
No
Does the
Solenoid Valve
operate properly
(click)?
Yes
Page 17
1. Turn the Control Switch OFF.
2. Reconnect "FUEL SOLENOID VALVE" (#6) (see Figure 13) wire.
3. Remove both ignition wires from the "IGNITION ELECTRODES" (#8)
Yes
see Figure 11) or connect a jumper wire across the Electrodes.
CAUTION: To prevent a HIGH VOLTAGE shock and or a fire
!
hazard, be sure to remove both "IGNITION ELECTRODES" (#8)
(see Figure 11) (tape the ends and separate the wires) or connect a
jumper wire across the Electrodes.
4. Turn the Control Switch ON. After approx. 20 seconds the "FUEL
SOLENOID VALVE" (#6) (see Figure 13) should receive power from the
"CONTROL UNIT" (#1), see Figure 7. A fine mist of fuel should appear
from the "FUEL NOZZLE" (#9), see Figure 12.
1. Turn the Control Switch OFF.
2. Reconnect ignition wires to
"IGNITION ELECTRODES"
(#8) (see Figure 11) or
remove jumper wire.
3. Reattach "DIESEL-BURNER
HEAD" (see Figure 9) and
attempt heater restart.
1. Turn the Control Switch OFF.
2. Check "FUEL SOLENOID VALVE"
(#6) (see Figure 13) for proper
operation by: Removing both wires
from the Solenoid Valve and
applying VDC power (+) and
ground(-) to the Solenoid Valve
electrical terminals. "FUEL
SOLENOID VALVE" (#6) (see
Figure 13) should click when VDC
power is applied.
Aqua-Hot™ Hydronic Heating System Shop Manual
Is a mist of fuel
(cone-shaped)
present?
Yes
1. Turn the Control Switch
2. Remove "FUEL NOZZLE"
3. Turn the Control Switch ON.
REV-A 03/02
No
OFF.
(#9), see Figure 12.
After approx. 20 seconds
fuel should flow freely from
the fuel nozzle port.
No
Does fuel flow
No
freely from the
port?
Yes