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© 2011 Aqua-Hot
®
AHE-100-02S Hydronic Heating System Service Manual—Rev. B
1. Turn the Control Switch Off.
2. Remove the fuel-line from the Aqua-
Hot’s “Diesel Fuel Return” and place
a short piece of fuel line in its place.
3. Put the opposite end of the fuel line in
a container.
4. Place the probes of a DC Multi meter
into plug locations, B-1(+) and B-2(-),
of the Diesel Burner’s “Control Unit”.
Also, measure the voltage across
B-2 (-) and B-4 (+)
5. Turn the Control Switch ON.
6. Observe the fuel flow. Flow should
be consistent without air bubbles.
Is the fuel flow
consistent with-
out air bubbles?
1. Check for fuel leaks in
the Diesel Burner’s
“Diesel Fuel Supply”
line. Repair if necessary.
2. Check the Aqua-Hot’s
“Fuel Filter” for clogging.
Replace if necessary.
3. Reattach “Diesel Fuel
Return” line.
4. Attempt heater restart.
1. Check the voltage level of
the DC-multi meter.
NOTE: Voltage level should be
within 0.5 volts of the system’s
DC batter voltage.
Does the DC multi
meter indicate ac-
ceptable system
voltage?
1. Check the Control
Switch’s:
A. Wire connections
B. Fuse (E) for
continuity.
2. Check DC power supply
wires and connections.
3. Reattach “Diesel Fuel
Return” line.
4. Attempt heater restart.
NO
NO
Yes
1. Inspect eh “Flame Detection
Photocell” for dust and/or
sooty carbon deposits. Clean if
necessary.
2. Completely cover the “Flame
Detection Photocell” with a
shop rag.
3. Turn the Control Switch ON.
After approx. 20 seconds of
operation a bright blue arc
(spark) should appear across
the “Ignition Electrodes”.
1. Turn the Control Switch OFF.
2. Reattach “Diesel Fuel Return” line.
3. Detach the “Diesel-Burner Head” from the Aqua Hot.
4. Disconnect one of the wires from the “Fuel Solenoid Valve”
NOTE: Do not remove or cut any of the external wires attached to
the “Diesel Burner Head”.
1. Do not attempt to restart the Aqua Hot when the “Diesel Burn-
er Head” is detached. An open flame can result and cause seri-
ous personal injury.
2. To prevent a fire hazard, be ure to disconnect one of the “Fuel
Solenoid Valve” wires.
Yes
S
ECTION
8: D
IESEL
-B
URNER
C
OMPONENTS
/T
ROUBLE
S
HOOTING
Summary of Contents for AHE-100-02S
Page 1: ...SERVICE MANUAL 2011 Aqua Hot Heating Systems Inc AHE 100 02S ...
Page 2: ... Page 2 2011 Aqua Hot AHE 100 02S Hydronic Heating System Service Manual Rev B ...
Page 104: ... Page 104 2011 Aqua Hot AHE 100 02S Hydronic Heating System Service Manual Rev B ...
Page 105: ... Page 105 2011 Aqua Hot AHE 100 02S Hydronic Heating System Service Manual Rev B ...
