A.O. Smith BTH 150 - Page 24

A. O. Smith Water Products Company Service Handbook
Irving, Texas 2000
©
Training Department
23
STEP 7. 24 VAC THRU ECO (ECO IS NOT A THERMISTOR).
Reinstalled plug.
Check for 24 VAC from back of red 1 plug to ground.
IF... THEN
24 VAC is not present replace
24 VAC is present
g
o to st
Note: Resistance thru ECO - plu
g
red 1 to plu
g
red 4 - is .5
o
TROUBLESHOOTING
STEP 7 - TEST FOR 24 VAC THRU ECO
IF… THEN
24 VAC is not present
24 VAC is present
replace
g
o to S
t
STEP 6. (continued)