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116986-01H 19
Thermocouple
Thermocouple
Figure 22 - Incorrect Pilot Flame Pattern
(Natural Gas Pilot Shown)
Figure 21 - Correct Pilot Flame Pattern
(Natural Gas Pilot Shown)
Figure 23 shows correct burner ame pat-
tern.
If burner ame pattern is incorrect, as shown
in Figure 24
• turn appliance off (see To Turn Off Gas to
Appliance, page 18)
• see Troubleshooting, page 21
Figure 23 - Correct Burner Flame Pattern
Figure 24 - Incorrect Burner Flame
Pattern
Blue & Bright
Yellow Flames
Orange
Flames
INSPECTING BURNERS
Check pilot ame pattern and burner ame
patterns often.
Figure 21 shows a correct pilot ame pattern.
Figure 22 shows an incorrect pilot ame pat-
tern. The incorrect pilot ame is not touching
the thermocouple. When the thermocouple
cools, the heater will shut down.
If pilot ame pattern is incorrect, as shown
in Figure 22
• turn heater off (see To Turn Off Gas to Ap-
pliance, page 18)
• see Troubleshooting, page 21
Note: The pilot ame on natural gas units will
have a slight curve, but ame should be blue
and have no yellow or orange color.