A.O. Smith TWI 35-130 Light pulses Cause Solution Remark SL3, See 12.2 Electrical circuit diagram

Models: TWI 35-130 TWI 45-190

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Instruction manual TWI 35-130 G/TWI 45-190 G

47

Pannes s’affichant sur la commande

Light pulses

Cause

Solution

Remark

 

 

 

 

 

3 (SL3)

No gas supply

1.

Open the mains gas supply valve and/or the manual gas valve

Contact your installation engineer for restoring the gas supply.

Three ignition

 

 

for the gas control.

 

attempts without

 

2.

Check the pre-pressure on the gas control.

 

success

 

3.

If necessary, restore the gas supply.

 

 

 

 

 

 

Air in the gas pipe

Bleed the gas pipe.

Contact your installation engineer for replacing the required parts.

 

 

 

 

 

 

No gas supply to

1.

Check if the gas valve switches.

 

 

burner

2.

Replace the gas control if necessary.

 

 

 

 

 

 

 

Error in the hot

1.

Check if the hot surface igniter has been properly connected.

Contact the installation engineer in case of reoccurring errors.

 

surface igniter circuit

 

See (12.2 “Electrical circuit diagram”).

Contact the installation engineer for replacing the required parts.

 

 

2.

Check the cabling of the hot surface igniter.

 

 

 

3.

Check the voltage over the hot surface igniter. This should be

 

 

 

 

115 VAC.

 

 

 

4.

Measure the resistance over the hot surface igniter. This

 

 

 

 

should be between 45 and 400 Ohms.

 

 

 

5.

Replace the hot surface igniter if necessary.

 

 

 

 

 

 

Phase and Zero

Correctly connect the Phase and the Zero (3.9 “Electrical

 

 

incorrectly connected

connection”). The device is phase-sensitive.

 

 

 

 

 

 

Error in the ionisation

1. Check if the hot surface igniter has been properly connected.

 

 

circuit

 

See (12.2 “Electrical circuit diagram”).

 

 

 

2. Check the cabling of the hot surface igniter.

 

 

 

3. Check if the ground wire of the burner has been properly

 

 

 

 

connected.

 

 

 

4. Replace the hot surface igniter if necessary.

 

 

 

 

 

 

Supply voltage too low

Check the supply voltage. This should be 230VAC (-15% +10%).

 

 

 

 

 

 

Instruction manual - TWI 35-130 G/TWI 45-190 G

47

Page 49
Image 49
A.O. Smith TWI 35-130, TWI 45-190 service manual Light pulses Cause Solution Remark SL3, See 12.2 Electrical circuit diagram

TWI 35-130, TWI 45-190 specifications

A.O. Smith TWI 35-130 and TWI 45-190 are high-efficiency water heaters designed to meet the diverse needs of residential and commercial applications. These units are part of A.O. Smith’s extensive product line, known for reliability, durability, and energy efficiency.

The TWI 35-130 model is a 35-gallon tank water heater, offering a first-hour delivery of 130 gallons. This capacity makes it suitable for households with moderate hot water demands. It features a compact design, allowing for easy installation in tighter spaces, which is ideal for urban settings. The unit operates on natural gas, promoting energy efficiency while reducing operational costs.

One of its main attributes is the advanced insulation technology that minimizes heat loss, thus enhancing overall energy efficiency. The TWI 35-130 is equipped with a state-of-the-art burner system that optimizes combustion for higher efficiency, translating to lower energy bills. Furthermore, it utilizes a dip tube that helps in delivering hot water promptly, ensuring that the demand for hot water is met swiftly.

On the other hand, the TWI 45-190 model caters to larger households or commercial settings with a 45-gallon capacity and a first-hour delivery of 190 gallons. This model also uses natural gas, but with a higher BTU rating, allowing for faster recovery rates, which is crucial during peak usage times.

Both models are designed with user-friendliness in mind, featuring intuitive controls that facilitate easy temperature adjustments and monitoring. Additionally, they incorporate safety features such as a temperature and pressure relief valve to prevent overheating and excessive pressure build-up, ensuring peace of mind for users.

Their innovative design also emphasizes longevity, with high-grade materials and protective coatings that resist corrosion and extend the lifespan of the tank. The TWI series stands out in the market not only for its performance and efficiency but also for its commitment to sustainability.

In summary, A.O. Smith's TWI 35-130 and TWI 45-190 water heaters bring together cutting-edge technology, efficiency, and reliability, making them excellent choices for both residential and commercial applications. With features designed to promote energy savings and user convenience, these models are poised to meet the hot water demands of modern life while adhering to high standards of safety and durability.