Aqua-Hot Hydronic Heating System Shop Manual 09/04
®
SECTION 7: TROUBLESHOOTING
Section 7.8
Section 7.8,
continued
After turning the
“Diesel”
switch
ON
:
TS8: The
Aqua-Hot
is at operating temperature;
however, the
Interior
and/or
Fresh Water
Tank Heat Exchanger
fans are not
operating.
Q1 : Is the
Tank Sensor Pin Jumper
on the
Electronic Controller
properly installed?
I.
Remove the
Faceplate
from the
Electronic
Controller
, allowing the Electronic
Controller’s
Printed Circuit Board
to be
exposed. Locate the
“TANK SEN”
Pins
located on the bottom right-side of the
Electronic Controller’s
Printed Circuit Board
;
reference “Illustration 7.8-1.”
Is the
Pin Jumper
properly installed with
the
Pin Jumper
covering both pins in
order to provide continuity?
A:
If YES:
Continue troubleshooting.
If NO:
Reseat the
Pin Jumper
on both
pins.
NOTE:
If reseating the
Pin Jumper
does
not correct the non-functioning
Heat Exchanger Fan failure, the
Electronic Controller
may need to
be replaced. Please contact the
Technical Support Department at
1-800-685-4298
for assistance.
Electronic Controller
Faceplate
#5
#4
#3
#2
#1
Electric Heating
Element Status
Low Voltage
Reset
Low Tank-Level
Cutoff
Heating Status
Engine Preheat
Pump
Low Battery
Voltage Fault
Low Temp
Cutoff Status
Overload Fault
Pump #2
Pump #1
Pump #3
Diesel-Burner
Status
Heating Zones
Status
ELECTRONIC CONTROLLER
���������
R
Illustration 7.8-1
AH
J4
“TANK SEN”
Pin Jumper
Location
“TANK SEN”
Pin Jumper
Properly
Installed
Electronic Controller
Printed Circuit Board
TANK SEN
Page 35
