Soft Lockout
When a soft lockout occurs, boiler will shut down. Boiler automatically restarts once condition that caused the lockout is corrected and the one-hour time delay is completed. Boiler can be restarted sooner than the time delay by using Adjustment Mode and selecting the reset button (see Adjustment Mode instructions) or by cycling power.
Soft Lockout is caused by one of the following:
Err 63, Maximum Recycles Exceeded – The burner lost flame during running mode, “STA 8” six times in a row.
Err 64, Internal Failure, refer to Error code listing for recommended corrective action.
Err 23, Flame sensed during post-purge (before gas valve signaled open). Check the gas valve for proper operation. Replace gas valve is problem persists.
