Checkꢀforꢀlooseꢀorꢀbrokenꢀwiresꢀbetweenꢀtheꢀ
thermostatꢀandꢀtheꢀcoolingꢀequipment.
TROUblESHOOTINg
COOlINg SYSTEꢀ DOES NOT RESpOND
HEAT/COOl bOTH ON AT SAꢀE TIꢀE
CheckꢀSW1ꢀ(EquipmentꢀType),ꢀtoꢀmakeꢀsureꢀitꢀisꢀsetꢀ
toꢀmatchꢀtheꢀinstalledꢀheating/coolingꢀequipmentꢀ
(see page 12)
(
“COOlINg” AppEARS ON SCREEN)
•
•
ꢀ
•
•
•
ꢀ
ꢀ
ꢀ
Checkꢀforꢀ24ꢀVACꢀatꢀtheꢀequipmentꢀonꢀtheꢀsecondaryꢀ
sideꢀofꢀtheꢀtransformerꢀbetweenꢀpowerꢀandꢀ
common.ꢀIfꢀvoltageꢀisꢀnotꢀpresent,ꢀcheckꢀtheꢀcoolingꢀ
equipmentꢀtoꢀfindꢀtheꢀcauseꢀofꢀtheꢀproblem.
ꢀ
not shorted together
Checkꢀforꢀ24ꢀVACꢀbetweenꢀtheꢀcoolingꢀterminalꢀ(Y)ꢀ
andꢀtheꢀtransformerꢀcommon.ꢀIfꢀ24ꢀVACꢀisꢀpresent,ꢀ
theꢀthermostatꢀisꢀfunctional.ꢀCheckꢀtheꢀcoolingꢀ
systemꢀtoꢀfindꢀtheꢀcauseꢀofꢀtheꢀproblem.
HEATINg EQUIpꢀENT IS RUNNINg IN
COOl ꢀODE
•
•
•
ꢀCheckꢀSW1ꢀ(EquipmentꢀType),ꢀtoꢀmakeꢀsureꢀitꢀisꢀsetꢀ
toꢀmatchꢀtheꢀinstalledꢀheating/coolingꢀequipmentꢀ
(see page 12)
fAN DOES NOT TURN ON IN A CAll fOR HEAT
“HEATINg” IS NOT DISplAYED
•
ꢀ
CheckꢀSystemꢀSettingꢀ#02ꢀ(FanꢀControl),ꢀtoꢀmakeꢀ
sure the fan control is properly set to match the type
of system (see page 11)
ꢀChangeꢀtheꢀSystemꢀModeꢀtoꢀHeat,ꢀandꢀsetꢀ
theꢀtemperatureꢀlevelꢀaboveꢀtheꢀcurrentꢀroomꢀ
temperature
HEAT pUꢀp ISSUES COOl AIR IN HEAT ꢀODE,
OR wARꢀ AIR IN COOl ꢀODE
“
COOlINg” IS NOT DISplAYED
ꢀ
•
ꢀ
CheckꢀSystemꢀSettingꢀ#12ꢀ(ReversingꢀValve),ꢀtoꢀmakeꢀ
sure it is properly configured for your system (see
page 11)
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1000652C 8400 Tstat Install.indd 26
10/13/09 11:09:03 AM