120 vac to ignitor – A.O. Smith 960 through 967 User Manual
Page 30
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BTH S E R V I C E H A N D B O O K
T R O U B L E S H O O T I N G
120 VAC TO IGNITOR
STEP 10A
120 VAC TO IGNITOR
IGNITOR
■
6 5 4
•
STEP 10A: CHECK FOR 120 VAC TO IGNITOR FROM PIN 1 AND 2 ON CONTROL BOARD
TERMINAL CN5.
Condition:
• Disconnect CN5 plug from control board.
• On/Off switch is on.
• Call for heat is activated.
• Perform test during ignitor warm up period.
IF...
THEN
120 VAC is not present
replace the control board if Steps 7 through 9B have
been performed and results were successful.
120 VAC is present on — BTH 250, 962 & 966 Series
continue to Step 10B.
120 VAC is present on — all other models
continue to Step 11.
A. O. Smith Water Products Co.
Ashland City, Tennessee © 2004
29
Technical Training Department
TC-044 Revision 6