Airxcel Aqua-Hot 200 Series, Руководство по обслуживанию

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Fluid Level Sensor
©Aqua-Hot®
250-D03 Diesel Series Service Manual REV 220302
p. 20
• Ensure that AC electrical power is supplied to the Aqua-
Hot’s electric element.
• Ensure that the fluid level sensor is oriented correctly (see
below).
If any of the requirements above are not fulfilled, correct
them before continuing to diagnose the fluid level sensor.
Reference the troubleshooting guide below.
Troubleshooting Procedure:
1. Verify that the Aqua-Hot’s expansion bottle is full of
antifreeze and water heating solution.
2. Verify that the wiring is secure, and in good working
condition.
3. Using a multimeter, test for continuity across the fluid level
sensor. If no continuity and the expansion bottle is filled to
at least the COLD level, replace the fluid level sensor.
4. If there is continuity, locate the LCD screen or control panel
and navigate to the INPUTS FROM AQUA-HOT section.
Locate “LLCO”.
• If it does not display TANK FULL, replace the controller.
•
If it displays TANK FULL, the fluid level sensor is
functioning as intended.
Fluid Level Sensor
Introduction:
The fluid level sensor monitors the current fluid level within
the Aqua-Hot. This device is intended as a fail-safe measure
which will disengage the Aqua-Hot if the fluid ever drops below a
set threshold. The fluid level sensor is located on the expansion
bottle (see below).
If the fluid level sensor is malfunctioning, the Aqua-Hot
will show no signs of operation whatsoever. Troubleshoot this
sensor if there is an adequate amount of fluid present within
the Aqua-Hot, and the unit does not operate:
• The burner fails to operate
• The burner status does not show ON
• The electric element fails to operate
• The electric status does not show ON
Troubleshooting Guidelines:
Before troubleshooting the fluid level sensor, ensure that the
following requirements have been met.
•
The fluid expansion bottle is filled to at least the “COLD”
mark.
• Verify that all RV-side in-line fuses are functional.
• Ensure that the unit is completely cool.
• Ensure that DC electrical power is supplied to the Aqua-Hot.
Figure 27
Failure to disconnect all power supplies and/or allow the
unit to cool before servicing could cause serious damage or
personal injury.
Figure 26
Figure 28
Fluid Level Sensor
Fill Cap
Hot Fluid Line
Cold Fluid Line
Fluid Return Hose
Fluid Overflow
Hose