Desa A - Manual (Page 26)

26
101048
INSPECTING
BURNER
Thermocouple
Pilot Burner
Figure 30 - Correct Pilot Flame Pattern
Thermocouple
Pilot Burner
Figure 31 - Incorrect Pilot Flame Pattern
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure 30 shows a correct pilot flame pattern. Figure 31 shows an incorrect pilot
flame pattern. The incorrect pilot flame is not touching the thermocouple. This will
cause the thermocouple to cool. When the thermocouple cools, the heater will shut
down.
If pilot flame pattern is incorrect, as shown in Figure 31
• turn heater off (see To Turn Off Gas to Appliance, page 25).
• see Troubleshooting, pages 28 through 31.