Lennox SL280DFV Installation Instructions Manual page 60

Troubleshooting: Continuous Fan Sequence of Operation
CALL FOR FAN
1
CALL FOR FAN
INDOOR BLOWER ON
CONTINUOUS FAN
SPEED
NO
CALL FOR FAN
MAINTAIN INDOOR
REMOVED?
BLOWER AT
CONTINUOUS FAN
YES
REQUEST
YES
MAINTAIN INDOOR
FOR COOLING
BLOWER AT
RECEIVED?
CONTINUOUS FAN
NO
REQUEST
YES
FOR HEAT
INDOOR BLOWER OFF
RECEIVED?
NO
DE−ENERGIZE INDOOR
BLOWER
1
Page 60
4 GO TO CALL FOR COOLING
1
GO TO CALL FOR 1ST STAGE HEAT