Aqua-Hot Hydronic Heating System Shop Manual 09/04
®
Page 34
SECTION 7: TROUBLESHOOTING
Section 7.7
Section 7.7,
continued
After turning the
“Diesel”
switch
ON
:
TS7: The
Aqua-Hot
is at operating temperature,
but an
Interior
and/or
Fresh Water Tank Heating
Zone
is not producing heat.
Q1 : Is the particular Heating Loop’s
Circulation
Pump
operating?
Quick Check -
Remove the Aqua-Hot’s
Access Cover
and determine if the problem
Heat Exchanger(s)
is plumbed with
Circula-
tion Pump #1
,
Circulation Pump #2
, or
Circulation Pump #3
; reference Figure 1 and
“Appendix B.” Once the particular
Circulation Pump
has been isolated, locate
and activate the
Room Thermostat
for that
particular heating zone. View the Circulation
Pump’s
Motor
through the clear, plastic
cover to check for operation.
Is the
Circulation Pump
operating/rotating?
A:
If YES:
Check the particular Heating
Loop’s plumbing system for kinks
and/or any other types of flow
restrictions.
If NO:
Perform each of the following
procedures, as necessary, until
the problem is resolved:
1. Locate the
Electronic Control-
ler
and remove the
Faceplate
.
2. Locate the Electronic
Controller’s
JP-3 Plug
and
insert the probes of a DC
voltmeter into the particular
Circulation Pump’s
Pin
loca-
tions; reference Appendix A:
Circulation Pump #1
Pins 6(-) and 5(+)
Circulation Pump #2
Pins 4(-) and 3(+)
Circulation Pump #3
Pins 2(-) and 1(+)
Observe the DC voltage on the
voltmeter.
Does a nominal 12 Volt-DC
voltage reading register on the
voltmeter?
A:
If YES:
The
Circulation Pump
must be
replaced. Please contact the
Technical Support Department at
1-800-685-4298 for assistance.
If NO:
The
Electronic Controller
must be
replaced. Please contact the
Technical Support Department at
1-800-685-4298 for assistance.
