Aqua-Hot Hydronic Heating System Shop Manual 09/04
®
inspect battery wiring for damage
and/or loose connections, and
ensure that all of the Aqua-Hot’s
electrical motors are operating
normally when under load.
NOTE (7.1-B):
If, after testing and correcting the
battery system, the
Low Battery Voltage Fault
indicator light continues to illuminate, and/or the
Low
Voltage Reset
(button) will not reset, the
Electronic
Controller
must be replaced. Please contact the
Technical Support Department at
1-800-685-4298
for
assistance.
Q3 : Is the Electronic Controller’s
Diesel-Burner
Status
light illuminated?
A:
If NO:
Perform each of the following
procedures, as necessary, until
the problem is resolved.
If YES:
Proceed to Q5.
I.
Remove the Electronic Controller’s
Face -
plate
. Use a jumper wire to make a
connection from the
Diesel (O)
to the
Diesel
(I)
on the
JP-2 Plug
; reference Appendix A.
Does the
Diesel-Burner Status
light
illuminate?
A:
If YES:
The “
Diesel”
switch must be
replaced. Please contact the
Technical Support Department
at 1-800-685-4298 for assistance.
Attempt heater restart.
If NO:
Continue Troubleshooting.
II.
Turn the “
Diesel”
switch
OFF
(also, make
sure the “
Electric”
switch is
OFF
). Use a
jumper wire to make a connection from
Pin
13
to
Pin 14
on the
JP-3 Plug
; reference
Appendix A. With the jumper wire in place,
turn the “
Diesel”
switch
ON
.
Does the
Diesel-Burner
ignite and the
Diesel-Burner Status
light illuminate?
A:
If YES:
The VDC/VAC
Control Thermostat
(continued on next page)
SECTION 7: TROUBLESHOOTING
Section 7.1,
continued
Section 7.1,
continued
A:
If YES:
Check the
JP-3 Plug
for loose
wire connections and/or harness
damage
If NO:
The
Electronic Controller
must be
replaced. Please contact the
Technical Support Department at
1-800-685-4298 for assistance.
Q2 : Is the Electronic Controller’s
Low Battery
Voltage Fault
light illuminated?
A:
If YES:
Perform each of the following
procedures, as necessary, until
the problem is resolved.
If NO:
Proceed to Q3.
I.
Remove the Electronic Controller’s
Face -
plate
. Check the DC battery voltage at the
supply batteries and at the Electronic
Controller’s
Battery Connections
; reference
Appendix A. Both voltage readings should
be between 11.5 and 14.0 volts.
A:
If the voltage level is within specs:
Continue Troubleshooting.
If the voltage level is out of specs:
Recharge and/or replace
batteries.
II.
Reset the
Low Voltage Reset
(button) on the
Electronic Controller
(this can be accom-
plished either by using a thin, straight object
to access the reset button through the small
hole in the
Faceplate
or by turning
OFF
the
“Diesel” switch on the Heater’s Interior
Switch Panel for approximately 30 seconds,
then turning the switch back
ON
). Continue
to read the voltage level at the Electronic
Controller’s
Battery Connections
, then, turn
the “
Diesel”
switch
ON
.
Under load, is the voltage level within 0.5
volts of the supply battery’s voltage?
A:
If YES:
Reference “NOTE (7.1-B).”
If NO:
Load-test the supply batteries,
(continued in the next column)
Page 18
