A.O. Smith EQB 115 G, EQB 200 G, EQB 155 G manual Fault finding, Fault Possible cause

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3.2Fault finding

Fault

Possible cause

Gas smell

Pilot

Blocked pilot burner

extinguishes

 

 

Blocked chimney

 

Safety thermostat

 

Thermocouple defective

 

Thermocouple makes no

 

contact

 

Gas supply closed

 

The thermostat is not

 

connected to the

 

thermocouple

Insufficient

Temperature is set too

hot water, or

low

none at all

Control knob in position

 

 

(✸) (pilot burns )

Control knob in position

(•)

Flue safety device closed the gas supply

Gas supply closed

Corrective action

If you smell gas you should immediately close the main gas tap you should not light any fire or switch on light, electrical switches or bells. Open windows and immediately contact your installer or the local gas company.

Clean the pilot burner

Find the cause and remove it.

Set the temperature regulator at a lower temperature.

Replace the thermocouple

Restore the connection

Open the gas tap

Connect the two wires to the thermo- couple

Set the temperature regulator at a higher temperature

Turn the temperature regulator completely clockwise; turn control button to “on” ( ); turn the temperature regulator to the desired position, preferably position 4. The appliance now operates fully automatically.

Put the appliance into operation.

Press the reset button - if present - on the safety thermostat and put the appliance into operation. If this occurs more often then you should inform your installer.

Open the gas tap and put the appliance into operation.

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Contents EQB 115 G EQB 155 GEQB 200 G Page Contents Description ApplianceAOS Technical safety equipment Flue down draught safety deviceGas control valve AOS Dimensions Technical descriptionDimensions Technical data Device category II2H3+Installation instructions InstallationWater connections AOS Gas connection Flue systemCommissioning Filling the water heaterPutting into operation Pilot adjustment Putting out of operationRemoving and replacing the inner door Temperature regulation Setting the pilotSetting the nominal heat input Converting to another type of gasDescription Unit EQB G20 G30 G31 Maintenance Sacrificial anodeCleaning Inlet combinationInspection of the internal waterside surfaces Spare partsFault finding Gas smellCondensation Important warningCommissioning 3 UsePutting out of operation Maintenance Fault finding Fault Possible causeFault Possible cause Guarantee in general Guarantee of the tankConditions for installation and use Range of guaranteeAny other dealer or stockist of the warrantors products Page Page Page Page 0307 630 R1

EQB 115 G, EQB 155 G, EQB 200 G specifications

A.O. Smith has established a strong reputation in the water heating industry, and their EQB series of gas water heaters exemplifies this commitment to innovation and efficiency. The EQB 200 G, EQB 155 G, and EQB 115 G models are crafted to meet various residential needs while showcasing advanced technologies and user-friendly features.

The EQB 200 G is the powerhouse of the series, designed to accommodate households with higher hot water demands. It boasts a 199,000 BTU per hour input, enabling quick heating and sustaining higher output even during peak usage times. The unit features a robust tank capacity, ensuring an ample supply of hot water when needed. A.O. Smith's unique combustion system enhances the efficiency of this model, optimizing fuel consumption and reducing operational costs.

Next, the EQB 155 G offers a perfect balance for medium-sized households. With a maximum input of 155,000 BTU per hour, this water heater is capable of delivering consistent hot water without compromising on energy efficiency. The smart design includes a built-in temperature control that allows for precise adjustments, making it convenient to set the desired water temperature. Its compact design enables easier installation in smaller spaces, while still providing quality performance.

For smaller households or those with lower hot water requirements, the EQB 115 G is an ideal choice. This model operates at a maximum of 115,000 BTU per hour, making it perfect for apartments or modest-sized homes. The EQB 115 G features innovative insulation technology, significantly reducing heat loss and enhancing overall efficiency. This not only conserves energy but also contributes to lower utility bills over time.

All models in the EQB series are equipped with A.O. Smith's exclusive Cyclone 2 venting system, designed to facilitate efficient airflow and reduce the risk of backdrafts. Additionally, the advanced ignition system promotes reliable performance while minimizing maintenance needs.

A key standout feature across this series is the integrated smart technology, which provides real-time monitoring of water temperature and energy consumption. This connectivity allows homeowners to track their water usage and make adjustments to optimize performance further.

In summary, the A.O. Smith EQB series - including the EQB 200 G, EQB 155 G, and EQB 115 G - showcases superior technology, user-centric design, and energy-efficient operation. These gas water heaters are engineered to cater to a variety of household needs without sacrificing performance or convenience.
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