OWNER’S MANUAL

TROUBLESHOOTING

Note: For additional help, visit DESA International’s technical service web site at www.desatech.com.

Note: All troubleshooting items are listed in order of operation.

WARNING: Turn off heater and let cool before servicing. Only a qualified service person should service and repair heater.

CAUTION: Never use a wire, needle, or similar object to clean ODS/pilot. This can damage ODS/ pilot unit.

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

When ignitor button is pressed, there is no spark at ODS/pilot

1.Ignitor electrode not connected to igni- tor cable

2.Ignitor cable pinched or wet

3.Piezo ignitor nut is loose

4.Broken ignitor cable

5.Bad piezo ignitor

6.Ignitor electrode broken

7.Ignitor electrode positioned wrong

1.Reconnect ignitor cable

2.Free ignitor cable if pinched by any metal or tubing. Keep ignitor cable dry

3.Tighten nut holding piezo ignitor to base panel of log set. Nut is located behind base panel

4.Replace ignitor cable

5.Replace piezo ignitor

6.Replace piezo ignitor

7.Replace piezo ignitor

When ignitor button is pressed, there is spark at ODS/pilot but no ignition

1.Gas supply turned off or equipment shutoff valve closed

2.Control knob not in PILOT position

3.Control knob not pressed in while in PILOT position

4.Air in gas lines when installed

5.ODS/pilot is clogged

6.Gas regulator setting is not correct

1.Turn on gas supply or open equipment shutoff valve

2.Turn control knob to PILOT position

3.Press in control knob while in PILOT position

4.Continue holding down control knob. Repeat igniting operation until air is removed

5.Clean ODS/pilot (see Cleaning and Maintenance, page 21) or replace ODS/ pilot assembly

6.Replace gas control

ODS/pilot lights but flame goes out when control knob is released

1.Control knob not fully pressed in

2.Control knob not pressed in long enough

3.Equipment shutoff valve not fully open

4.Pilot flame not touching thermocouple, which allows thermocouple to cool, causing pilot flame to go out. This prob- lem could be caused by one or both of the following:

A)Low gas pressure

B)Dirty or partially clogged ODS/pilot

5.Thermocouple connection loose at con- trol valve

6.Thermocouple damaged

7.Control valve damaged

1.Press in control knob fully

2.After ODS/pilot lights, keep control knob pressed in 30 seconds

3.Fully open equipment shutoff valve

4.A) Contact local natural gas company

B) Clean ODS/pilot (see Cleaning and Maintenance, page 21) or replace ODS/ pilot assembly

5.Hand tighten until snug, then tighten 1/4 turn more

6.Replace thermocouple

7.Replace control valve

www.desatech.com

Continued

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Vanguard Heating VYGF33NRA installation manual Troubleshooting, Observed Problem Possible Cause
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VYGF33NRA specifications

The Vanguard Heating VYGF33NRA is a highly efficient heating solution designed to provide reliable warmth for residential and commercial spaces. This natural gas-fired unit is known for its robust construction and advanced technology, ensuring it meets the needs of various applications while delivering optimal performance.

One of the standout features of the VYGF33NRA is its impressive heating capacity. With an output of 33,000 BTUs, this heater can effectively warm large areas, making it suitable for homes, workshops, and offices. It is particularly advantageous for spaces that demand consistent and reliable heating throughout colder months.

Efficiency is a hallmark of the Vanguard VYGF33NRA. It boasts a remarkable AFUE (Annual Fuel Utilization Efficiency) rating, which signifies its ability to convert a high percentage of gas into usable heat. This feature not only supports energy conservation but also helps reduce overall heating costs, making it an eco-friendly choice for consumers.

The VYGF33NRA is equipped with a state-of-the-art electronic ignition system, ensuring quick and reliable starts. This system decreases the likelihood of pilot light issues and enhances safety, providing peace of mind for users. Additionally, the built-in safety features, including flame rollout switches and limit switches, help guard against overheating and system malfunctions.

Durability is another key characteristic of this heating unit. The VYGF33NRA features a rugged design with high-quality materials, ensuring it can withstand the rigors of daily use. Its compact footprint allows for flexible installation, enabling it to fit comfortably in tighter spaces without compromising on performance.

The Vanguard Heating VYGF33NRA also emphasizes ease of maintenance. It comes with accessible components that facilitate routine servicing and upkeep, thus prolonging the lifespan of the unit and enhancing its reliability.

Furthermore, it produces minimal noise during operation, contributing to a quieter indoor environment. This feature makes it an excellent choice for residential settings where comfort and tranquility are paramount.

In summary, the Vanguard Heating VYGF33NRA stands out for its impressive heating capacity, efficiency, advanced technologies, and durable construction. Designed for versatile applications, it offers users an effective and sustainable solution for their heating needs, making it a valuable addition to any space.
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