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 ...
TH E N
24 V A C is no t pres ent
rep lac e
24 V A C is pre s en t
go to s t
N ote : R es is tan c e th ru E C O - p lug red 1 to p lug 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
go to St
STEP 6. (continued)
Summary of Contents for BTH 120
Page 65: ......
