Honeywell T8400C Owner's Manual - Page 5
Em Ht and Aux Ht Indications
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Em Ht and Aux Ht Indications Emergency Heat (Em Ht) and Auxiliary Heat (Aux Ht) indications are not available on all models. The ▲ indicator points to either Em Ht or Aux Ht when these modes are active. Em Ht: Aux Ht: The ▲ indicator points to Em Ht when the SYSTEM switch is set at Em Ht. The ▲ indicator points to Aux Ht when the living space needs auxiliary backup heat to help handle the heating load. INDICATOR Em Ht Set Room M18425 5 69-1490
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5
69-1490
Em Ht and Aux Ht Indications
Emergency Heat (
Em Ht)
and Auxiliary Heat (
Aux Ht
)
indications are not available on all models. The
▲
indicator
points to either
Em Ht
or
Aux Ht
when these modes are
active.
Em Ht
:
The
▲
indicator points to
Em Ht
when the
SYSTEM switch is set at
Em Ht.
Aux Ht
:
The
▲
indicator points to
Aux Ht
when the
living space needs auxiliary backup heat to help
handle the heating load.
Set
Room
INDICATOR
M18425
Em Ht