A.O. Smith 120 trough 500 - Manual (Page 35)

BTR TANK TYPE HEATERS
SERVICE HANDBOOK
A.O. Smith Water Products Service Handbook
Irving, Texas ©2000 Training Department
34
STEP 13 PILOT SPARK TEST
STEP 13. PILOT SPARK TEST. Visually check for spark at the pilot assembly.
Note: The pilot burner mounts on the left side of the main burner.
IF THEN
The igniter is not sparking: Check for:
• A 7/64” spark gap
• Spark cable continuity
• Ground cable continuity
Sparking is present: • Go to step 14.
Power To Module May Be Interrupted To Reset .
Trial for Ignition
90 sec. 5 min. 90 sec. 5 min. 90 sec.
Call for
heat Sparking No
Sparking Sparking No
Sparking Sparking
Continuous
Trial
Sequence