TM 10--3510--221--24
0068 00--2
BURNER BLOWER INLET PRESSURE LO -- Continued
0068 00
11. Position SW1 then SW2 to ON.
12. Use maintenance menu to test heating system (WP 0010 00). When burner blower comes on check for
>100 VAC between PS300 terminal (C) and TB7 terminal (N).
Is >100 VAC present?
YES Go to step 13.
NO Check wire connections between PS300 and air outlet pressure switch (PS301).
Repair as necessary.
13. Use maintenance menu to test heating system. When burner blower comes on check for >100 VAC
between PS300 terminal (NC) and TB7 terminal (N).
Is >100 VAC present?
YES Go to TYPICAL AC INPUT SIGNAL FAULT (WP 0103 00).
NO Replace air inlet pressure switch PS300 (WP 0191 00).
END OF WORK PACKAGE
