Interior Switch Controls - Aqua-Hot 600 Series Service Manual

Interior Switch Panel
Introduction:
The interior switch panel is used to control the two potential
heating sources for the Aqua-Hot's boiler tank, as well as to
control the engine preheat feature. When a switch is activated,
the indicator light on the switch will illuminate.
Coach Control Panel Screen:
Newer Aqua-Hot units that come equipped with the Reporter
may have a coach touch-screen display instead of the interior
switch panel. Please confi rm with your coach dealer or vehicle
manufacturer the location and functionality of your interior
control screen.
Diesel-Burner Switch:
When the diesel-burner switch is in the ON position and the
control thermostat or ETS Module tells the Reporter that heat
is needed for the boiler tank, the diesel-burner will respond by
fi ring up and providing heat. A cold boiler tank can expect to
be brought to operating temperature by the diesel-burner in
approximately 10 to 20 minutes. In order to obtain continuous
hot water, the diesel-burner switch must be activated.
Additionally, the diesel-burner switch can be used to reset a
low-voltage condition. This is accomplished by turning off the
diesel-burner switch for 30 seconds, then turning it back on, or
by resetting the Reporter.
NOTE: If the diesel burner fails to ignite, it will trigger a fault
on the Aqua-Hot Reporter (D04 and newer).
Electric Element Switch:
The electric element is the Aqua-Hot's secondary heat source
and can be used when plugged into shore power. The electric
element provides heat when moderate temperatures exist
(50°F or higher), and/or when there is a low demand for hot
water. It can be activated by turning the electric switch in the ON
position, or by tapping the electric to ON on the coach display
screen.
Engine Preheat Switch:
The engine preheat switch activates the engine preheat pump,
which draws the motor home's engine coolant through the
boiler tank to heat it before returning it to the engine block to
transfer the heat there. Either the diesel-burner switch or the
electric element switch must also be activated in order for the
engine preheat feature to function. The engine preheat switch
does not need to be activated for the motor-aide feature to work
and should be shut off when traveling.
©Aqua-Hot® 675D Service Manual
• Low Switch - Moving the High/Low switch to the "LOW"
position will energize the 120V AC/2000W element
inside the Aqua-Hot. On the "LOW" setting, allow 1-2
hours for the Aqua-Hot to reach operating temperature
of 190ºF.
• High Switch - Moving the High/Low switch to the "HIGH"
position will energize both AC elements, the 120V
AC/2000W element & the 240V AC/4500W element,
within the Aqua-Hot, providing adequate heat for light-
duty heating and hot water needs. Allow 30 minutes to 1
hour for the Aqua-Hot to heat to operating temperature.
Interior Switch Panel
Figure 9
p. 11