Install Instructions

37
X. TROUBLESHOOTING (continued)
6. Circulator is On, Damper is Open 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 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 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 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 the gas valve for proper operation.
5. Circulator is On But Damper is Not Open
Display / Status Recommended Corrective Action
STA 20
Damper Failed
to Open
The control is waiting for the damper to open. Damper end switch has failed to close (end switch contact is
stuck open). Combustion can never take place unless the damper blade is in the fully open position. Check
the following:
- During status “STA18" or “STA 20” the control terminal “P6 - 5” (yellow wire) is energized.
- Check for loose connection between control and vent damper, check damper harness.
- Check for obstruction in path of damper
- When damper is open (end switch closed) control terminal “P6 – 2” should receive power from the vent
damper.
- Place jumper between control terminal P6-5 and P6-2. If error 55 does not clear, replace control.
- Defective harness or vent damper.