Bosch Appliances 125FX LP, 125FX NG specifications No Spark AT the Pilot

Page 14

PILOT ORIFICE

Fig. 14 - Pilot burner with pilot orifice

Main Burner Flames: The main burner flames should be blue, with a more intense blue cone in the center core. Yellow flames could be a sign of wrong size gas orifices or dirty burners, or a blockage on the heat exchangers fins. If some burners have yellow flames while others have good flames, it is likely that dust, lint or spider webs have partially clogged the burner venturis. To clean the burners, contact a gas service person.

Mineral Scale Build-up: AquaStars, when operated at lower temperature settings, do not accumulate mineral buildup. If however, the heater is used at the higher temperature settings and the water has a high mineral content, periodic descaling may be necessary. The heating coils should be flushed with a descaling solution. Consult your dealer or Controlled Energy for instructions.

TROUBLE SHOOTING (see maintenance table)

Introduction

The AquaStar 125FX pilot and burners are ignited by a water flow valve. Numerous water related problems can cause this water valve to malfunction such as: Insufficient water flow volume to activate the burners at its minimum flow requirement; Dirt in the water flow valve causing it to malfunction; Sediment build-up in faucet aerators, or shower heads; Uneven pressures between cold and hot with single lever faucets; Plumbing cross overs. These water flow related problems can cause the heater to deliver less than its full output, or to fail to ignite or to shut down completely.

Problems are stated in upper case, bold face. Most common causes for the problems follow in order of likelihood. The suggested solutions require that the cover be taken off. To do this, pull off the temperature knob and unscrew and remove the temperature knob collar. Pull main cover out toward you and lift up and out.

NO SPARK AT THE PILOT

1. On/Off switch is not ”On” (Position I).

The On/Off switch is located behind the flipdown cover plate on the front panel strip. See fig. 11.

2. Bad electrical connections.

Be certain that all electrical connections are clean, tight, and free of any moisture.

3.Water flow is not sufficient to activate heater. Water flow rate at faucet is below minimum flow needed to activate heater. When temperature adjustment knob is turned all the way clockwise, the AquaStar model 125FX requires 1/2 gallon per minute flow to activate the heater. As a reference, this is a flow which would fill a quart jar in

30seconds. If the temperature adjustment knob is turned fully counterclockwise, a flow rate of 1.1 gallons/minute is required to activate the heater.

4.Bad fuse

Check the viability of the fuse (see Fig 10 (#4) for location of fuse). Replace if necessary.

5. Water inlet filter is clogged

Water flow is restricted, preventing flow needed to activate heater. Clean water inlet filter screen.

6. Cross over in water lines

To confirm there is no cross-over in the plumbing, shut off the cold water supply to the AquaStar water heater and open a hot water faucet. There should not be any water flowing at that faucet. Water running is a sign of a plumbing cross-over. Consult your plumber.

7. Microswitch needs to be adjusted or replaced.

If you do not hear a click when a tap is opened, the microswitch needs to be adjusted. See Fig. 16 (#1) for location and see Fig. 15 for adjustment. The microswitch may need to be replaced.

Adjusting screw

 

G871_212

 

 

 

 

 

 

Fig. 15 - microswitch adjustment

 

 

 

 

 

 

 

 

Pilot does not spark with

 

Pilot

always

sparks

 

water flow

 

without water flow

1

Close water tap

1

Close water tap

 

2

Remove screw cap and

2

Screw

in

adjusting screw

 

unscrew till sparking starts

 

until it stops sparking

3

Screw in turning one and a

3

Continue

to

screw in

 

half turns

 

turning one and a half

 

 

 

turns more

 

8.Cold incoming water connection made to wrong side of heater

Make sure cold water inlet connection is on the right side when you are facing the AquaStar.

9.Water valve parts may be dirty or components damaged

First check that venturi is free of dirt particles. Water valve

and component parts must be totally free of dirt.

14

Page 13 Page 15
Image 14
Page 13 Page 15
Contents What to do if YOU Smell GAS For Your SafetyTable of Contents Principle of Operation FeaturesUnpacking the Aquastar Heater Aquastar Model 125FX Proper Location for Installing Your Heater General Rules to Follow For Safe OperationMounting Installation Combustion AIR Requirements ClearancesFreeze Warning Spill Switch SafetyVenting Horizontal Side Wall Some Venting Guide SuggestionsSide wall exit locations for mechanical draft vent terminals GAS Line Sizing For Natural GAS For LP GASAltitude Natural Gas Liquid Propane Maximum Inlet Pressure SettingsWater Connections Above 4.500 ft consult your local gas providerElectrical Connections Connecting the pressure relief valve PRVWiring Diagram for AQ 125FX Lighting and Operating Instructions For Your Safety Read Before Operating Your HOT Water HeaterSetting the Water Temperature Operating InstructionsTemperature Adjustment Knob No Spark AT the Pilot Main Burners GO OUT During HOT Water USE Pilot Sparks Continuously with no Water RunningPilot Lights but Burners will not Come on Water is TOO HOT Diagram of AquaStar 125FX Interior Components Diagram Parts List 125FX Interior Components Diagram and Parts List Maintenance Table see pages 13 Controlled Energy Corp

125FX NG, 125FX LP specifications

Bosch Appliances has been a leader in the home appliance industry for decades, known for their innovation, efficiency, and reliability. Among their notable offerings are the Bosch 125FX LP and 125FX NG, two versatile models designed for modern kitchens that cater to the needs of both home cooks and professional chefs.

One of the standout features of the Bosch 125FX models is their dual-fuel capability. With options for liquid propane (LP) and natural gas (NG), these appliances provide flexibility in fuel choice, maximizing efficiency and performance. Users can select the type of gas that best suits their culinary style and kitchen setup, ensuring optimal cooking results.

Both models boast a powerful burner system that includes multiple high-performance burners. Featuring a high-output burner designed for rapid heating, these appliances allow for quick boiling and searing, making them ideal for time-sensitive cooking. Additionally, a simmer burner is included which provides low heat for delicate sauces and simmering dishes, striking a balance between power and control.

The Bosch 125FX series incorporates advanced cooking technologies that elevate the user experience. One significant technology is the precise temperature control, which ensures that cooking temperatures remain consistent, reducing the risk of overcooking or burning meals. The built-in oven features a convection cooking option, allowing for even heat distribution, resulting in perfectly baked goods and roasted dishes.

Another notable characteristic of these appliances is their sleek and modern design. Bosch has a reputation for creating aesthetically pleasing products that fit seamlessly into contemporary kitchen environments. Premium materials, rounded edges, and clean lines give the 125FX models a sophisticated look that appeals to style-conscious consumers.

User-friendly features are also prominent in both the LP and NG models. Intuitive knobs and controls allow for easy adjustments, while the large oven capacity provides ample space for multiple dishes, perfect for families or entertaining guests. Additionally, Bosch's commitment to energy efficiency means these appliances not only save on energy bills but also decrease the environmental footprint of your home.

In summary, the Bosch 125FX LP and 125FX NG are premier appliance choices for anyone looking to enhance their kitchen. With powerful cooking capabilities, innovative technologies, and a stylish design, they encapsulate Bosch's commitment to quality and performance in home appliances.
Top Page Image Contents