Specifications

53
A. O. Smith Water Products Service Handbook
Ashland City, Tennessee 2005
©
Training Department
TROUBLESHOOTING ERROR CODES
Error Code "030" - This indicates that the Flow Switch is not closed.
On Display Board red light is on "Circulation Fail" Red indicates LED - On
Display Window will show "LOCO 030".
Power is "ON" - Plugs are in receptacles
Central Control Board
Lockout
Status
If error code is …
… then

check connection and 24V hot from CCB CN13, Pin 1 to TB3,
Terminal 25.

check connection and 24 VAC hot from TB3, Terminal 25 to TB1,
Terminal 8.

check connection and 24V hot from TB1, Terminal 8 to Flow Switch.

if flow switch is closed, TB1, Terminal 7 to Ground should be 24V.

check connections from TB1, Terminal 7 to CCB CN13, Pin 7.

replace wiring, check board Flow Switch and paddle as required.

check connections (Amp) for c
onduit assembly
"030" indicates Circulate Fault (Flow Switch)
030Soft