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Hydro-Hot Hydronic Heating System Shop Manual 07/03

Page 6

Section 4: General Heater Information

4.3 Low Voltage Reset (Button)

The Hydro-Hot's Electronic Controller must be manually reset whenever the

Low Battery Voltage fault indicator light has been activated, reference

Figure 5. To reset the Electronic Controller, simply depress the "Low

Voltage Reset" button located on the Electronic Controller (use a thin

straight object to access the reset button through the small hole in the

faceplate).

4.4 Emergency Cutoff Indicator Light

This

indicator light will illuminate RED when either the 120 VAC Electric

Heating Element and/or the Diesel-Burner have automatically shutdown

due to a low water and antifreeze solution level inside the Hydro-Hot's

Boiler Tank, reference Figure 5. This fault will automatically reset when the

low level condition is corrected.

4.5 Heating Status Indicator Light

This

indicator light will illuminate GREEN whenever the Hydro-Hot's VDC /

VAC Control Thermostat is calling for heat, allowing the water and

antifreeze solution in the Hydro-Hot's Boiler Tank to be heated by either the

Diesel-Burner and/or the 120 VAC Electric Heating Element, reference

Figure 5. When this indicator light is off, no heat is being supplied to the

Hydro-Hot's Boiler Tank. Please note that this light will only be active if

either the Diesel and/or the Electric switch are turned ON, reference Figure

NOTE:

The Hydro-Hot's VDC / VAC Control Thermostat will automat-

ically activate the Diesel-Burner and/or the 120 VAC Electric Heating

Element, only if the Diesel and/or Electric switch is in the ON position.

So to heat the motorhome / domestic hot water, simply choose the

desired heat source(s) and leave the switch(s) (i.e. Diesel and/or

Electric) ON.

4.6 Engine Preheat Pump Indicator Light

This

indicator light will illuminate GREEN whenever the Engine Preheat

Pump is operating, reference Figures 1 and 5. Please note that this light

will only be active if the Engine Preheat switch is ON in conjunction with

either the Diesel and/or the Electric switch, reference Figure 4. If this

indicator light illuminates RED, it indicates an electrical overload condition

(i.e. short) has occurred in this particular component's circuitry.

4.7 Circulation Pump #1 Indicator Light

This

indicator light will illuminate GREEN whenever Circulation Pump #1 is

operating, reference Figures 1 and 5. Please note that this light will only be

active if the Hydro-Hot is at normal operating temperature (i.e. between

160

��

�F and 190

��

�F) and if either Heating Zone #1 or #5 are calling for heat,

reference Figure 3. If this light illuminates RED, it indicates an electrical

overload condition (i.e. short) has occurred in this particular component's

circuitry.

Electronic

Controlle

continue