Transformer (continued), 24 vac from transformer – A.O. Smith 960 through 967 User Manual
Page 21
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BTH S E R V I C E H A N D B O O K
STEPS
T R O U B L E S H O O T I N G
TRANSFORMER (CONTINUED)
24 VAC FROM TRANSFORMER
‘m ■'■
STEP 3: CHECK FOR 24 VAC AT TRANSFORMER CN4 PLUG ON CONTROL BOARD.
Condition:
• CN4 is plugged into control board.
• On/Off switch is on.
Insert meter probes into back of CN4 plug on pins 3 and 4 (blue and yellow wires) with CN4
plugged in and power on.
IF...
THEN
24 VAC is not present
replace transformer if Steps 1 and 2 were performed and results were successful.
24 VAC is present
continue to Step 4.
Technical Training Department
TC-044 Revision 6
20
A. O. Smith Water Products Co.
Ashland City, Tennessee © 2004