Owner`s manual

Hydro-Hot Hydronic Heating System Shop Manual 07/03
R
Yellow wires
Black wires
ATO
Fuse
Yellow wire
Yellow wire
Black wires
Heating Zones
Status
#5
#4
#3
#2
#1
Electric Heating
Element Status
Low
Voltage
Reset
Emergency
Cutoff
Hydro-Hot
Heating Status
Engine Preheat
Pump
Electronic
Controller
Low Battery
Voltage Fault
Low
Temp
Cutoff Status
Overload Fault
Circulation
Pump #2
Circulation
Pump #1
Stir Pump
Diesel-Burner
Status
TM
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 
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Page 34
Electronic Controller
Faceplate
Section 7.8,
continue
d
After turning the Diesel switch ON:
TS8
: The Hydro-Hot is at operating tempera-
ture, but the fans of an Interior and/or
Fresh Water Tank Heat Exchangers are
not operating.
Q1: Is the Electronic Controller's Low Temp
Cutoff Status light illuminated?
A: If YES:
Perform each of the following
procedures as necessary until the
problem
is resolved.
If NO:
Inspect
the Heat Exchanger fans
and
interior Room Thermostat wiring
fo
r loose connections at JP-1 Plug of
th
e Electronic Controller, reference
Figure 3.
a. Activate the interior Room Thermostat and
then turn the Diesel switch ON. Remove the
Hydro-Hot's Acces
s Cover and locate the two
yellow colored wires, which connect to the two
black wires, reference the illustration on this
page. Disconnect the wires and then connect
the two yellow wires together by utilizing an
ATO type automotive fuse, again reference
th
e illustration. Do the Heat Exchanger fans
now operate?
A: If YES:
Th
e Low Temp Cutoff Thermostat
may
need to be replaced. Please
contact our Technical Department at
1-800-685-4298
for assistance.
If
NO:
Perform
each of the following
procedures as necessary until the
problem
is resolved.
1. Locate the Electronic Controller
and
remove the Faceplate.
2. Locate the Electronic Controller's
JP-1 Plug and read the DC voltage
signal output, and input, at the
particular interior Room
Thermos
tat's circuit, reference
Figure
3. Is there an output DC
Section 7.8
Section 7: Troubleshooting