24EPU‐DInstallationandOperationManual
059840‐00Rev.A Heat‐TimerCorp.
Thedisplaybuttonfunctionsvarybasedonthecurrentscreendisplayed,asdescribedinthefollowingtable:
DefaultDisplay
TheEPU‐DdefaultdisplayvariesdependingonselectedSensorType.
DisplayIconsandMessages
ThefollowingiconsandmessagesmaybedisplayedbytheEPU‐D.
Screen
Button
Left
▲▼
Right
Default Hasnofunction Hasnofunction
MENU
Entersthemenumode.
Menu
BACK
Goesbackonemenustep.
Scrollsthroughthemenu.
SELECT
Selectscurrentmenuitem.
Setting Changesthecurrentsettingvalue.
SAVE
Savescurrentsetting.
Configuration
NEXTorEXIT
Jumpstonextvieworexits.
SensorType=HeatingSystemSensor SensorType=Pressuretrol
#SensorType Message Description
1 All Thebatteryiconblinkswhenthebatteryisweak.
2 HSS Temperature WhenHeatingSystemSensorisselectedastheSensorType,thesystem
temperaturedisplaysbydefault.Thevalueisshownin(°For°C),
dependingontheDisplayUnitsetting.
3 Pressuretrol Temperature WhenPressuretrolisselectedastheSensorType,theoutdoor
temperaturedisplaysbydefault.Thevalueisshownin(°For°C),
dependingontheDisplayUnitsetting.
4All Call Factory! Ahardwarefaulthasbeendetected.
5HSS Shf IfScheduleShiftisactive,Shfdisplays.
6 Pressuretrol Ext IfExtendDayisselectedfromtheNightSchedule,displaytoggles
betweenExtandtheremainingextendedminutes.
7 All Statusmessage Thestatusmessagevariesdependingonthecurrentoperatingstate.
8All min IfFastCycleTestisactive,minblinksandtimeelapses60xfaster.