Thermal Solutions APEX APX425C - 12 Troubleshooting (continued); Boiler State Definitions

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APEX Installation, Operating, & Service Instructions APEX Installation, Operating, & Service Instructions
No. Boiler State
0 Initiate
1 Standby delay
2 Standby
3 Safe Startup
4 Drive Purge
5 Prepurge
6 Drive Lightoff
7 Preignition Test
8 Preignition
9 PFEP (pilot flame establishing period)
10 MFEP (main flame establishing period)
11 Direct Ignition
12 Running
13 Postpurge
14 Lockout
Table 12-22: Boiler State
Figure 12-21: Example Alarm File Contents
12 Troubleshooting (continued)