Lennox XP25-048-230-01 - Transition to Auxiliary Heat

Page 53
XP25
Yes
Yes
No
No
Auxiliary heat is
used to satisfy all
heat calls during
heat pump lock
out.
Defrost in the last 30
minutes?
Heat pump ran for
at least 30 minutes?
From modu
lating heat
pump heat.
Back to modulating
heat pump heat.
Go to auxiliary
heat.
Figure 31. Transition to Auxiliary Heat