DVC-500 Firebox Static Pressure Safety Protocol

CausesAnd/OrReasonsFor(2-blink)Shutdown:

The DVC-500 operates with a negative pressure firebox as a safety feature. Any loss of this negative pressure will start the safety protocol, ( A two blink status warning )

The following list of potential reasons for warnings is in order of most likely to least likely to occur:

1.Opening the viewing door or the ash door for long periods of time without turning the feed adjuster knob to the "ASH OUT" position.

2.Blocked or partially blocked flue pipe. This is generally a slow buildup and may only cause the unit to go in and out of Stage 1. Although as the condition worsens, the unit will continue to step down until it goes out.

3.Draft motor fan blades dirty. This is generally a slow buildup and may only cause the unit to go in and out of Stage 1. Although as the condition worsens, the unit will Continue to step down until it goes out.

4.Draft motor fan cover plate not installed or not in proper position. (Behind ash pan)

5.Gasketing problems with the viewing or ash removal door.

6.Grate clean-out cover not closed properly, Fig.26.

7.Grate inserts are extremely loose or out of alignment, fig. 30.

8.Coal ash building up behind the ash pan to a point where the ash door is sprung and not sealing when latched.

9.Transparent tubing from firebox to sensing switch is off or blocked with fly ash.

10.Poor seal on the hopper lid (usually caused by coal under hopper lid edge gasketing after fueling).

11.Fines tray cover not closed properly, fig. 20.

12.Poor or improper flue termination, other than those shown in the owners manual.

13.Too high of negative pressure in the area being heated. This is usually caused by the area being too tight and using many exhausting appliances ( range hood, clothing dryer. exhaust fans, etc.). Often this condition can be caused by heavy and gusting winds hitting the outside, creating a negative pressure inside. This internal to external pressure difference may cause the unit to go in and out of Stage 1.

14.Faulty computer circuit or disconnected wiring between control board and safety switch.

15.Faulty safety switch (not field adjustable).

16.Draft motor failure - there is electricity to the motor but it will not turn.

[At any time, the 2 blink status can be reset by disconnecting the power to the unit for a few seconds.]

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Harman Stove Company manual DVC-500 Firebox Static Pressure Safety Protocol, CausesAnd/OrReasonsFor2-blinkShutdown
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DVC-500 specifications

The Harman Stove Company DVC-500, a prominent model in Harman's lineup, represents the pinnacle of modern pellet stove technology. Designed for both aesthetic appeal and high efficiency, the DVC-500 combines style and functionality to provide an exceptional heating solution for homes.

One of the standout features of the DVC-500 is its user-friendly digital control board. This advanced system allows homeowners to easily adjust settings such as temperature, feed rate, and fan speed, all with the touch of a button. The intuitive interface simplifies operation and enhances the overall user experience. Additionally, the thermostat-compatible feature provides the convenience of maintaining a consistent temperature throughout the home.

The DVC-500 is equipped with a powerful and efficient combustion system that maximizes heat output while minimizing emissions. Its Smart Stove technology continuously monitors and adjusts the combustion process for optimal performance. This ensures that the stove operates at peak efficiency, utilizing less fuel while delivering more heat. As a result, homeowners can enjoy lower energy costs along with an eco-friendlier heating option.

The DVC-500 also boasts a spacious hopper capacity, allowing for extended burn times without the need for frequent refueling. With the ability to hold up to 55 pounds of pellets, users can enjoy hours of consistent warmth and comfort without interruption. The stove's attractive design, available in several finishes, enhances any living space while offering the robust performance expected from Harman products.

Another notable characteristic of the DVC-500 is its easy-to-clean design. The unit features a removable ash pan that simplifies disposal, ensuring that maintenance is hassle-free. Additionally, the heat exchanger is designed for efficient airflow, which enhances the stove's heating capacity while reducing the buildup of soot and debris.

Safety is a critical consideration, and the DVC-500 incorporates several features to ensure peace of mind. The stove includes an integrated safety high-limit switch and a positive-pressure exhaust system that prevents backdraft, making it a reliable choice for any home.

In summary, the Harman Stove Company DVC-500 is a versatile, efficient, and aesthetically pleasing pellet stove that combines advanced technology with ease of use. Its intelligent control systems, high-efficiency combustion, and thoughtful design make it an excellent choice for homeowners seeking a reliable and stylish heating solution. With the DVC-500, Harman continues its legacy of quality craftsmanship and innovative heating solutions.
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