Owner`s manual

Hydro-Hot Hydronic Heating System Shop Manual 07/03
R
Page 16
After turning the Diesel switch ON:
TS1: The Hydro-Hot's Diesel-Burner does not
operate.
NOTE: In
order to perform the following checks,
it is necessary to locate the Hydro-Hot's Elec-
tronic
Controller and Switch Panel.
Q1
: Is the Electronic Controller's Emergency
Cutoff light Illuminated?
A: If YES:
Perform each of the following
procedures as necessary until the
problem is resolved.
If NO:
Proceed to Q2.
WARNING:
DO NOT remove the
Hydro-Hot's Radiator
Cap when the
heater is at maximum operating
temperature,
reference Figure 1.
Hot
coolant can be present and
serious personal injury may result.
a. Check the coolant level in the Hydro-Hot's
Expansion Tank, and then the Boiler Tank if
necessary.
A: If coolant level is okay:
Continue troubleshooting.
If
coolant level is low:
Add coolant and attempt heater
restart.
b. Check for continuity at the Float Switch,
reference
Figures 1 and 3.
A: If continuity exists:
Continue troubleshooting.
If
continuity does not exist:
The Float Switch must be replaced.
Please con
tact our Technical Depart-
ment at 1-800-685-4298 for assis-
tance.
c. Remove the Electronic Controller's Faceplate
and
use a jumper wire to make a connection
from Pin 15 to Pin 16 on the JP-3 Plug,
reference
Figure 3. Does the Emergency
Cutoff ligh
t go off?
Section 7: Troubleshooting
Section 7.1
Section 7.1,
continue
d
Switch Panel
By Vehicle Systems
Diesel
Electri
c Engine
Preheat
Diesel-Burner’s
Indicator
Light
TM




 
R
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



 
R
Electronic Controller
Faceplate