ESC Installation, Operating, and Service Instructions

26
TROUBLESHOOTING (continued)
5. Circulator is On, Blower is On but Boiler Fails to Start
Display / Status Description
STA 10
Retry / Recycle
Delay
The Boiler is in “Retry Delay”:
- The burner failed to light (no ame signal). After a 5 minute delay, control will attempt to light the burner
again. There is no limit to the number of retries.
Recycle Delay
- The burner loses ame during running mode, “STA 8”. After a 10 second delay, control will attempt to
light the burner again. If the burner loses ame during running mode, “STA 8” during the next six
recycles, control will progress to a soft lockout.
StA 11
Pressure Switch
Failed to Open
Refer to Troubleshooting Section, Err 2 for corrective action.
STA 12
Pressure Switch
Failed to Close
Refer to Troubleshooting Section, Err 29 for corrective action.
STA 13
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 entering 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 ame during running mode, “STA 8” six times
in a row. Refer to recommended corrective actions on next page to help determine the cause of the
problem.
- 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.
STA 14
Hard Lockout
When a hard lockout occurs boiler shuts down.
STA 16
Flame Out of Sequence
If ame is detected in pre-purge control goes to Flame Out of Sequence Before trial, “Sta 16” and
“rr 23” is reported. The control gives a ame 10 seconds to disappear. If ame goes away, control
resumes heating cycle from the beginning. If it doesn’t “rr 23” is cleared and “rr 6” is reported. When
ame is off control goes to Soft Lockout and “rr 6” is cleared. Check gas valve for proper operation.