Desa EFS33NR ユーザーズマニュアル

107172-01G

Check pilot flame pattern and burner flame patterns often.

Figure 37 shows a correct pilot flame pattern. Figure 38 shows an
incorrect pilot flame pattern. The incorrect pilot flame is not
properly heating the thermocouple. When the thermocouple cools,
the heater will shut down.

If pilot flame pattern is incorrect, as shown in Figure 38

• turn heater off (see To Turn Off Gas to Appliance, page 17)

• see Troubleshooting, pages 20 through 22

Note:

 The pilot flame on natural gas units will have a slight curve,

but flame should be blue and have no yellow or orange color.

Pilot Burner

Pilot Burner

Thermocouple

Periodically inspect all burner flame holes with the heater running. All
slotted burner flame holes should be open with yellow flame present.
All round burner flame holes should be open with a small blue flame
present. Some burner flame holes may become blocked by debris or
rust, with no flame present. If so, turn off heater and let cool. Remove
blockage. Blocked burner flame holes may create soot.

Figure 39 on page 19 shows correct front burner flame pattern.
Figure 40 on page 19 shows incorrect front burner flame pattern.
The incorrect burner flame pattern shows yellow tipping at top of
blue flame.

If front burner flame pattern is incorrect, as shown in Figure 40,
page 19

• turn fireplace off (see To Turn Off Gas to Appliance, page 17)

• see Troubleshooting, pages 20 through 22

 The hand-held remote control unit must

Shows Temperature
Setting

Increases Room
Temperature in
AUTO Mode

Decreases Room
Temperature in
AUTO Mode

Turns Burners On or
Off and Allows You
to Choose the Auto
Setting

The Log Heater will
Automatically Cycle
between Pilot and
the Heat Setting that
has been Selected