heat-timer EPU-D - Page 42

42EPU‐DInstallationandOperationManual
059840‐00Rev.A Heat‐TimerCorp.
Toomuchheat. Incorrectprogramming. Verifythefollowingsettings:
• EnsurethecontrolisnotinBypassmode.See“Bypass
Mode”onpage 35.
• EnsuretheDayand/orNightHeatAdjustmentisnotset
toohigh.See“DayAdjustment”onpage 30and“Night
Adjustment”onpage 30.
• Ifexcessheatisonlyinthemorning,ensuretheBoost
Adjustmentisnotsettoohigh.See“BoostAdjustment”
onpage 32.
• EnsuretheOutdoorCutoffisnotsettoohigh.See“Day
Cutoff”onpage 30and“NightCutoff”onpage 31.
• EnsurethesystemSetpointissetcorrectly.See“System
Setpoint”onpage 31.
• EnsureThermalLockoutisnotdisabled.See“Thermal
Lockout”onpage 32.
Toolittleheat. Incorrectprogramming. Verifythefollowingsettings:
• EnsuretheDay/NightSchedulesaresetcorrectly.See
“Day/NightSch#1andDay/NightSch#2”onpage 34.
• EnsuretheDayand/orNightHeatAdjustmentisnotset
toolow.See“DayAdjustment”onpage 30and“Night
Adjustment”onpage 30.
• EnsuretheOutdoorCutoffisnotsettoolow.See“Day
Cutoff”onpage 30and“NightCutoff”onpage 31.
• EnsurethesystemSetpointissetcorrectly.See“System
Setpoint”onpage 31.
Noheat. Incorrectprogramming. Verifythefollowingsettings:
• EnsureSeasonisnotsettoSummer.See“Season”on
page 26.
• EnsuretheOutdoorCutoffisnotsettoolow.See“Day
Cutoff”onpage 30and“NightCutoff”onpage 31.
• EnsurethecontrolShutdowninputisnotactive.The
displaywillshow“ShutdownActive”.
DefectiveEPU‐DControl
Module,sensor,orwiring.
See“Displayshowsanincorrecttemperature.”
Symptom PossibleCause RecommendedAction(s)