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Operating the LCD

Operational Flowchart

©Aqua-Hot®

 125-DN1 Service Manual 

REV 220421

©Aqua-Hot®

 125-DN1 Service Manual 

REV 220421

p. 11

p. 10

Operational Flow Chart

A heat source is selected from 

Interior Control Panel

Electric Element

External Diesel Burner

Electric Heating Element 

will activate, providing 

heat to the antifreeze and 

water heating solution 

within the boiler tank

The diesel burner will 

begin providing heat to the 

antifreeze and water heating 

solution present within the 

boiler tank.

The antifreeze and water 

heating solution in the boiler 

tank heats to 180°F by the 

electric heating element and/

or external diesel burner.

An Interior Zone 

Thermostat Calls 

for Heat

A hot water faucet opens, 

signaling a need for heat to the  

boiler tank

The fluid circulation pump 

activates and begins circulating 

the heated antifreeze and water 

solution throughout the interior 

heating zone

The heating zone 

fans activate

Heat is transferred to the 

vehicle interior via the heat 

exchangers

The cooled antifreeze 

is returned to the boiler 

tank to be reheated.

Hot water flows from the water 

faucet

Heat is transferred to the 

domestic hot water system

Operating the LCD

Introduction:

This document will outline the basic operating instructions 

for the Aqua-Hot LCD Screen.

Climate Pages:

The climate pages are for most intents and purposes the 

“Home” of the LCD screen. From here, the end-user will select 

their interior temperature set-points, activate or deactivate the 

diesel burner, and the electric element

Zone Control (1):

Precise zone control display will differ depending on the type of 

zone thermostats used within the coach. 
Section 1A demonstrates the appearance of the zone control 

section when ON/OFF thermostats are used within the coach. 

In this use-case, the buttons on-screen serve only as ON/OFF 

toggle switches.

Tapping on one of the zones shown above will display a new 

screen where the interior temperature can be set.

1

3

4

5

2

1A

B

C

A

Section A:

This section shows the current zone 

temperature (shown as 71°F in the example 

to the bottom left) as well as a button to turn 

the zone on or off
If the zone temperature is set, but this item 

is not set to ON, the zone heat exchanger will 

not activate. 

Section B:

These arrows are used to increase or decrease 

the desired set-point temperature of the zone 

thermistor.

Section C:

After the desired temperature set-point has 

been selected tap “SET” on the LCD to set 

that temperature. The Aqua-Hot will now work 

to maintain this interior temperature, and the 

screen will return home.

External Diesel Burner Activation (2):

The Diesel Burner can be activated by tapping on the burner 

item on-screen. The burner has two modes; ON and OFF.

ON: 

While ON, the diesel burner will work to 

maintain a tank temperature of 180°F, with a 

minimum tank temperature of 160° F.

OFF: 

While off, the diesel burner will not serve to 

provide any heat to the boiler of the Aqua-Hot 

whatsoever.

Содержание Aqua-Hot 100 Series

Страница 1: ...Service Manual 100Series AHE 125 DN1...

Страница 2: ...ed by transfer from the heated antifreeze and distilled water solution The heated domestic water then flows through the tempering valve to be mixed with cool water from the fresh water tank to achieve...

Страница 3: ...a Hot please contact our Technical Service Department at 574 AIR XCEL 574 247 9235 from 7 00am to 4 00pm MST Monday through Friday As with any appliance allow the Aqua Hot to completely shut down BEFO...

Страница 4: ...cing disconnect all power supplies DO NOT operate the diesel burner and or electric heating element without antifreeze and distilled water heating solution present in the Aqua Hot s boiler tank Doing...

Страница 5: ...2 Tempering Valve 3 Aqua Hot Controller 4 Antifreeze and Water Heating Solution Tank 5 AC Electric Element 6 AC Activation Relay 7 Plate to plate Heat Exchanger 8 Three Way Valve 9 Zone Air Bleed Val...

Страница 6: ...LCD screen From here the end user will select their interior temperature set points activate or deactivate the diesel burner and the electric element Zone Control 1 Precise zone control display will d...

Страница 7: ...utilized with the Aqua Hot 5in display Using the Aqua Hot with this new display will ensure that you can take advantage of all of the tools and features of this controller Features This new controller...

Страница 8: ...dicates that heat is either not needed or not requested by the zone thermostat 71 This indicates the set point of the coach thermostats The example in Figure 18 is showing the coach thermostat is requ...

Страница 9: ...ones have been directly wired to the Aqua Hot as described in the installation manual Heating sub systems can be activated independent of their control circuits and other control sensors as a means of...

Страница 10: ...ate Ensure the controller is properly oriented reference Figure 32 10 Using the 4 nuts previously removed fasten the controller to the mounting plate 11 Insert the controller and mounting plate into t...

Страница 11: ...to the INPUTS FROM AQUA HOT section HOME Aqua Hot Diagnostics DIAG Locate LLCO Does LLCO display TANK FULL Yes No This fluid level sensor is functioning as intended Replace the controller Troubleshoo...

Страница 12: ...this thermostat Yes No Depress the red button in the center of the high limit thermostat Figure 40 Re test for continuity Does the thermostat now have continuity Yes No This thermostat is functioning...

Страница 13: ...inue troubleshooting to the right Open a hot water faucet within the coach 1 1 2 2 Figure 47 Continue trouble shooting here Low Temperature Cutoff Thermostat Introduction The Low Temperature Cutoff Th...

Страница 14: ...s of the Three Way Valve to ensure it is out of the way 6 On the top of the Three Way Valve move the two 2 constant tension clamps AWAY from the tee fitting so that they are as far from the barb as po...

Страница 15: ...the Aqua Hot and slide the red and blue PEX through their ports in the front face of the Aqua Hot Use soapy water as necessary to lubricate the PEX going through the rubber grommets in the ports DO NO...

Страница 16: ...Figure 60 If no functionality replace the AC electric relay Figure 59 If tank temperature is not 180 F check element for 11 2 13 amps Replace the Electric element This AC Electric system is operating...

Страница 17: ...switch the electric heating element on and off in conjunction with the interior switch panel and ETS module even though the electric element is on a separate circuit Troubleshooting Procedure Trouble...

Страница 18: ...ely the same Yes This ETS module is functioning as intended Disconnect the ETS module from its leads on the wire harness Navigate back to the INPUTS FROM AQUA HOT section of the LCD screen No Yes No D...

Страница 19: ...Requirements Parts needed PLX 125 HA1 High Altitude Kit Potential other parts needed PLE 125 FL1 Kit 100 Series Fuel Line only if fuel lines are damaged PLX 125 003 Fuel Filter 100 Series only if fue...

Страница 20: ...Pins Figure 79 1 2 Ground goes to Pin 1 Power goes to Pin 2 If you would rather use a plug instead of the wire and gator clips the mating part numbers needed for the connector are Housing 1 967644 1 T...

Страница 21: ...uction A lack of interior heat or hot water when provided with adequate heat from either the electric element and or the diesel burner can be attributed to an overheat thermostat the Aqua Hot controll...

Страница 22: ...rner Troubleshooting This section will cover any issues with the external diesel burner The diesel burner is the primary heat source to the 125DN The troubleshooting procedures listed below are arrang...

Страница 23: ...or damage Check plumbing lines and circulation pump to make sure they are properly secured and free of any damage Check the fuel pump and circulation pump for any damage Run the burner for 20 minutes...

Страница 24: ...System Schematics System Schematics Aqua Hot 125 DN1 Service Manual REV 220421 Aqua Hot 125 DN1 Service Manual REV 220421 p 47 p 46 ZONE THERMOSTATS ZONE HEAT EXCHANGERS...

Страница 25: ...System Schematics System Schematics Aqua Hot 125 DN1 Service Manual REV 220421 Aqua Hot 125 DN1 Service Manual REV 220421 p 49 p 48 EXTERNAL DIESEL BURNER ELECTRIC ELEMENT...

Страница 26: ...de Connectors ELE 014 711 Thermistor Tank Temperature Sensor ELE 102 201 Aqua Hot AC Harness ELE 102 211 Burner DC Harness ELE 400 900 Harness Buehler C20 Pump ELX THM 309 Thermistor 10K NTC Room Temp...

Страница 27: ...00 Low Temperature Cutoff Thermostat w Spade Terminals ELX 2E7 102 125DN Element 1 NPSM 120 VAC 1500W Heating MSX 907 162 Refractometer EXE 103 0EX Heat Exchanger Cozy III PLX CTB 290 Clamp Hose Const...

Страница 28: ...that is complete peer through the eyeglass of the refractometer to continue to the next step Adjust the Boundary Line Once the glycol solution has been properly applied adjust the calibration screw u...

Страница 29: ...Heating Systems LLC 7501 Miller Drive Frederick CO 80504 Visit us online at www aquahot com Call us at 574 AIR XCEL 574 247 9235 2022 Aqua Hot Heating Systems LLC Printed in the USA Service Manual 10...

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