Standby, Pre-heat, Heat-1 – Boyertown nrgMax Universal Oil Control V4.0 User Manual
Page 13: Heat-2, No ignition, High limit, Post-heat, Lost flame, Limit-reset, Circulate
NORMAL SEQUENCE
ABNORMAL SEQUENCE
Standby
Burner=OFF
Blower=OFF
Pre-Heat
Burner=Enabled
Blower=OFF
Timer=30Sec
Heat-1
Burner=Enabled
Blower=HEAT
Timer=OFF
Heat-2
Burner=Enabled
Blower=COOL
Timer=OFF
No Ignition
Burner=Enabled
Blower=OFF
Timer=OFF
High Limit
Burner=Enabled
Blower=HEAT
Timer=OFF
Post-Heat
Burner=OFF
Blower=HEAT
Timer=BOD
Lost Flame
Burner=Enabled
Blower=HEAT
Timer=BOD
Limit-Reset
Burner=OFF
Blower=HEAT
Timer=BOD
Circulate
Burner=OFF
Blower=HEAT
Timer=OFF
BURNER NOT
DETECTED
BURNER NOT
DETECTED
BURNER NOT
DETECTED
CALL FOR
HEAT ON W
LIMIT OPEN
LIMIT OPEN
LIMIT CLOSED
W CLEARS
W2 IS
ENERGIZED
G
ALONE
CALL FOR
HEAT ON W
HEATING SEQUENCE
(Enhanced PSC Mode)
BURNER DETECTED
BURNER DETECTED
T
IM
E
R
E
X
P
IR
E
S