Schwank P40U Owner's Manual page 33

Loss of Flame - Spark Restoration Retrial
If there is a loss of flame during the run mode, the unit will energize the spark within 0.8 sec-
onds and perform a spark restoration trial for ignition. In this mode, the ignition means is re-
stored without the gas valve being closed. If a flame is not established during the restoration
trial, the unit will perform as in "No Flame Established" fault operation above.
Leaking Valve - Hard Lockout Mode
If a flame is present when the gas valve is not energized, the unit will enter the hard lockout
mode.
Internal Fault - Hard Lockout Mode
If an internal fault is detected within the unit, the unit will enter the hard lockout mode.
System or External Fault - Hard Lockout Mode
If the unit detects a system fault or an external fault, the unit enters the hard lockout mode.
P40U-F / P40U-IF I&O Manual
IM101220
33
RD: MAR 2014
RL: 4B