2.3Operation safety

High-pressure switch:

To prevent the compressor from exceeding its range of operation, there is an integral high-pressure switch, which interrupts when the pressure is 20 bar in the cooling unit. Activate the red reset button once the cause of the error has been identified. When the high-pressure switch interrupts, the red LED will flash until the reset button manually or the pressure has fallen to 15 bar or the cause of error has been identified. When the high-pressure switch interrupts, the red light will flash until the reset button on the pressure switch is activated. In order to prevent a repetition of a pressure switch error, the water may be set 2-3°C lower.

Safety breaker for electrical heating element

If an error occurs at the heater, the safety breaker trips and stops the heater in order to prevent the tank from being overheated.

When working on the heat pump, always make sure the power supply is disconnected. Any work on this unit may only be carried out by trained personnel!

2.4Warnings

High-pressure switch:

When the pressure switch trips, the red light on the display will light until the pres- sure switch is reset.

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A.O. Smith 290 service manual
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290 specifications

The A.O. Smith 290 is a prominent water heater designed to elevate the standards of residential and commercial hot water solutions. This product exemplifies A.O. Smith's commitment to innovation, efficiency, and durability in the water heating industry.

One of the key features of the A.O. Smith 290 is its impressive energy efficiency. Equipped with advanced insulation technology, the unit minimizes heat loss, thus reducing energy consumption and lowering utility bills. This energy-efficient design makes it an environmentally friendly choice for users looking to cut down on their carbon footprint while enjoying reliable hot water.

The A.O. Smith 290 operates using either natural gas or propane, offering versatility depending on the user's preference or availability of resources. Its robust heating system allows for quick recovery rates, ensuring that households or businesses have an ample supply of hot water, even during peak usage times. This capability is particularly beneficial for larger families or establishments requiring significant amounts of heated water for various applications.

Durability is another distinguishing characteristic of the A.O. Smith 290. Built with high-quality materials, this water heater is subjected to extensive testing to ensure it can withstand the rigors of daily use. The unit features a corrosion-resistant tank that prolongs its lifespan and reduces the likelihood of leaks, providing peace of mind to users who demand reliability from their appliances.

Furthermore, the A.O. Smith 290 integrates cutting-edge technology for enhanced usability. It comes equipped with a user-friendly digital thermostat that allows for precise temperature control, enabling users to set their desired water temperature while ensuring safety. In addition, safety features such as a pressure relief valve and thermal shutdown provide added protection for both users and the system itself.

The compact design of the A.O. Smith 290 allows for easy installation in various spaces, making it a versatile option for different settings. Whether installed in a crawl space, utility room, or closet, it efficiently delivers consistent hot water without taking up excessive space.

In conclusion, the A.O. Smith 290 stands out in the market for its energy efficiency, versatility, durability, and advanced technology. It represents a smart investment for anyone in need of reliable hot water, combining performance and efficiency while ensuring user safety and convenience. With its user-centric features, it is suited to meet the demands of modern living, making it a preferred choice among homeowners and businesses alike.
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