TROUBLE- SHOOTING

Continued

OBSERVED

POSSIBLE

 

 

 

 

 

 

 

 

 

PROBLEM

CAUSE

 

REMEDY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pilot lights but flame

1.

Manual shutoff valve

1.

Fully open manual

 

 

 

 

goes out when

 

not fully open.

 

 

shut-off valve.

 

 

 

 

 

control knob is

2.

Control knob not fully

2.

Press in control knob

 

released.

 

pressed in.

 

 

fully.

 

 

 

 

 

 

 

3.

Control knob not

 

3.

After pilot lights, keep

 

 

 

pressed in long

 

 

control knob pressed in

 

 

 

enough.

 

 

30 seconds.

 

 

 

 

 

 

4.

Safety interlock system

4.

Wait

one minute

for

 

 

 

has been triggered.

 

safety interlock system

 

 

5.

Thermocouple connec-

 

to reset. Repeat ignition.

 

 

5.

Hand tighten until

 

 

 

 

 

 

tion loose at control

 

snug, then tighten 1/4

 

 

 

valve.

 

 

turn more.

 

 

 

 

 

 

6.

Pilot flame not touching

6.

A) Contact qualified

 

 

 

thermocouple, which

 

service person to

 

 

 

 

 

 

allows thermocouple to

 

properly adjust pilot

 

 

 

 

 

 

cool, causing

pilot

 

flame

 

 

 

 

 

 

 

 

flame to go out. This

 

B) Contact local

 

 

 

 

 

 

problem could

be

 

natural gas company.

 

 

 

caused by any or all of

 

C) Clean pilot (see

 

 

 

 

 

 

the following:

 

 

Cleaning and Mainte-

 

 

 

A) Improperly ad-

 

nance, page 23) or

 

 

 

 

 

 

justed pilot flame

 

replace pilot assembly.

 

 

 

B) Low gas pressure

 

 

 

 

 

 

 

 

 

 

C) Dirty or partially

 

 

 

 

 

 

 

 

 

 

clogged pilot

 

 

 

 

 

 

 

 

 

 

7.

Thermocouple damaged.

7.

Replace thermocouple.

 

 

8.

Control valve damaged.

8.

Replace control valve.

 

 

 

 

 

 

 

 

 

 

 

Burner does not light

1.

Safety interlock

 

1.

Fully

depress

control

 

after pilot is lit.

 

system has been

 

 

knob

in any

position

 

 

 

inadvertently trig-

 

 

other than pilot. Wait one

 

 

 

gered.

 

 

minute for safety inter-

 

 

 

 

 

 

lock system to reset. Re-

 

 

 

 

 

 

peat ignition.

 

 

 

 

 

 

2.

Burner orifice is

 

2.

Clean burner (see

 

 

 

 

 

 

clogged.

 

 

Cleaning and Mainte-

 

 

 

 

 

 

nance, page 23) or

 

 

 

 

 

 

 

 

 

replace burner orifice

 

 

 

 

 

 

 

 

 

(see Changing Burner

 

 

3.

Burner orifice diameter

 

Orifice, page 30).

 

 

 

 

 

3.

Replace burner orifice

 

 

 

is too small.

 

 

(see Changing Burner

 

 

4.

Inlet gas pressure is

 

Orifice, page 30).

 

 

 

 

 

4.

Contact local natural

 

 

 

too low.

 

 

gas company.

 

 

 

 

 

 

 

 

 

 

 

 

Delayed ignition of

1.

Manifold pressure is

1.

Contact local natural

 

burner.

 

too low.

 

 

gas company.

 

 

 

 

 

 

2.

Burner orifice is

 

2.

Clean burner (see

 

 

 

 

 

 

clogged.

 

 

Cleaning and Mainte-

 

 

 

 

 

 

nance, page 23) or

 

 

 

 

 

 

 

 

 

replace burner orifice

 

 

 

 

 

 

(see Changing Burner

 

 

 

 

 

 

Orifice, page 30).

 

 

 

 

 

 

 

 

 

 

Continued

25

 

 

 

 

 

 

 

 

 

 

 

 

 

100749

Page 25
Image 25
Desa GVC35NA, GVC50NA, GVC65NA installation manual TROUBLE- Shooting, Cleaning and Mainte

GVC35NA, GVC50NA, GVC65NA specifications

Desa GVC series heaters, including models GVC35NA, GVC65NA, and GVC50NA, are prominent products in the realm of gas-fired heating solutions. These heaters are designed for residential and light commercial applications, providing a reliable heat source with high efficiency.

The GVC35NA has a heating capacity of 35,000 BTU, making it an excellent choice for smaller spaces. It features a compact design, allowing for easy installation in various settings. The advanced vent-free technology incorporated into the GVC35NA enables it to operate without the need for external venting, maximizing efficiency and eliminating heat loss. Additionally, this model includes an oxygen depletion sensor (ODS), which ensures safety by shutting off the unit if oxygen levels drop below a certain threshold.

Moving on to the GVC50NA, this model provides a mid-range heating capacity of 50,000 BTU. This unit is ideal for medium-sized rooms and offers the same vent-free technology as the GVC35NA. The GVC50NA's unique design also enhances airflow, ensuring a consistent and comfortable temperature throughout the space. Like its counterpart, it is equipped with the ODS for added safety, making it suitable for use in bedrooms and other enclosed areas.

The GVC65NA represents the upper end of the GVC series, boasting a robust heating capacity of 65,000 BTU. Designed for larger spaces, it features multiple heat settings, allowing users to customize their heating experience based on specific needs. The unit’s sleek design not only provides aesthetic value but also incorporates a built-in blower option, enhancing air circulation and ensuring even heat distribution. Safety remains a priority with the GVC65NA, which includes an ODS as well as a built-in thermostat for precise temperature control.

All models in the GVC series come equipped with simple control mechanisms, ensuring ease of use. They also utilize glowing ceramic elements for efficient and effective heating. Furthermore, the stylish exterior and compact design of these heaters make them an attractive addition to any room.

In summary, the Desa GVC35NA, GVC65NA, and GVC50NA heaters provide a comprehensive range of heating solutions, combining efficiency, safety, and ease of use. Their vent-free operation, built-in safety features, and aesthetic designs make them ideal choices for a variety of heating needs. Whether for small, medium, or large spaces, there is a GVC model to meet specific requirements, ensuring comfort and warmth for users.