Toptech TT-N-411 - TT-N-411 Heat Pump System Wiring; TT-N-421 Multi-Stage Heat Pump Wiring; TT-N-421 Conventional System Wiring

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Operating Your Thermostat
Setting the System Control Mode
TheSystemControlhasseveralmodesofoperationthatcanbeselectedby
movingtheSYSTEMswitchtooneofthreepositions.
COOL Onlyyourcoolingsystemwilloperate
OFF Heatingandcoolingsystemsareoff.
HEAT Onlyyourheatingsystemwilloperate.
Additional Switch Position (Model TT-N-421 Only):
EMER Operatesabackupheatsource(EmergencyHeat)forheatpump
 systemsonly.
NOTE: If your model TT-N-421 was set to a con-
ventional system (NORM) then you will not have the
EMER (emergency heat) option and “NO AUX SET”
will flash in the display if EMER is selected
with the
system switch.
Setting the Fan Control Mode
The Fan Control has 2 modes of operation – AUTO
and ON. The mode can be selected by moving the
FAN switch to the appropriate position.
AUTO Thesystemfanwillrunonlywhenyour
  heatingorcoolingsystemisrunning.
ON Thesystemfanwillstayon.
Temperature Adjustment
Presstheorbuttontoadjustthecurrentsetpointtemperature.
Status Indicators
Statusindicatorsappearinthedisplaytoletyou
knowifyoursystemisheating,coolingoroff.
HEAT Ifashing,indicatesyourheatingsystem
  isrunning.
COOL Ifashing, indicatesyourcoolingsystem
  isrunning.
Additional Status Indicators (Model TT-N-421 Only):
AUX Indicatesthattheauxiliarystageofheatingisrunning
  (Multi-StageSystemsonly),orthattheemergencyheat
  systemisrunning(heatpumpsystemsonly).