Fluid Circulation Pump
©Aqua-Hot®
250-D03 Diesel Series Service Manual
REV 220302
p. 84
Burner Maintenance
Step 8: Clean Ignition Electrodes and Flame Sensor
1. Ignition Electrodes
• Polish away any carbon deposits that may have baked onto the metal tips of the ignition electrodes with a coarse
sponge
2. Flame Sensor
•
For light dirt, dust, and/or carbon deposits, simply wipe off the flame sensor with a soft cloth.
•
Should heavy carbon deposits be present, completely remove the flame sensor from the photo disc and clean with
brake cleaner.
Flame Sensor
Electrodes
Figure 145
