EWC Controls EWT-3102 User Manual page 96

Table 9. Sequence of Operation for Heat Pump Systems.
System Setting Fan Setting
Off Auto
Cool Auto
Cool or Auto Auto
Cool or Auto Auto
Heat Auto
Heat or Auto Auto
Heat or Auto Auto
Heat or Auto Auto
Em. Heat Auto
Em. Heat Auto
Em. Heat Auto
a
Configure O/B in Installer Setup. Based on last piece of equipment called (cooling = O or
heating = B).
c
If Installer Setup System Type is set to 2Heat/1Cool Heat Pump with Auxiliary Heat.
d
If Installer Setup System Type is set to 3Heat/2Cool Heat Pump with Auxiliary Heat.
e
This terminal does not energize if Installer Setup System type is set to 2 Heat/2 Cool Heat
Pump with no Auxiliary Heat.
EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat
Call for Action
None
None
Stage 1 Cooling
Stage 1 and Stage 2
Cooling
None
Stage 1 Heating
Stage 1 and Stage 2
Heating
Stage 1, 2 and 3 Heating
None
Stage 1 Heating
Stage 1 and Stage 2
Heating
Energize Terminals Screen Message
a
O/B None
a
O/B None
a
Y, G, O/B Cool On
d a
Cool On
Y, Y2 , G, O/B
a
O/B None
a
Y, G, O/B Heat On
c a
Y, AUX , G, O/B Aux Heat On
d
e
Y, Y2 , AUX , G,
Aux Heat On
a
O/B
a
None
L ,O/B
a
E, G, L, O/B Heat On
a
Aux. Heat On
E, AUX, G, L, O/B
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