IGNITION AND CALL FOR HEAT WITH SINGLE-STAGE THERMOSTAT
L
L
A
T
L
I
G
H
T
O
F
F
--- [ Safety 19Check
Verify There
Is No Main Burner
Flame
YES
Indoor Blower OFF After
Heat OFF Delay
(Low Heat Speed)
De-Energize LJcombustion Air_
Gas Valve Inducer ON
YES
Indoor Blower _
ON NO_
(100% Speed)
J _ I Indoor Btower OFF
After Heat OFF Delay
H gh HeaiSpeed
YES
v
ac I°gr_libtiUoS_iO_ 7A0r°/lonrdat c erp e%Nd
_ N°" I Calibration
t_
NO
]
YES
Pre-Purge
--I 15Sec°nds I
I 'g°it°r I"20 Seconds
I GasVaiveEnergized I
I
÷ ÷
IgnitionTdal Begins Indoor Blower On I
I Ignit/rON II Delay Timer Started I /[
_NO_ D eG-aSlerVaIgiVzeed _Stches s_fu YE S _-[
YES
I IgnitorOFF I
÷
I Wait For IgnitionStabilization Delay I
I Set to
I
.... Low Firing Rate I
Move to Mid Firing Rate
and High Firing Rate after / qR _,Call For Heat Satisfied
I 2nd and 3rd Stage Delays I \_J
I (based on DIP Switch selections) I_
Soft Lockout:
Error Code
Flashes
Post-Purge H Combustion Air]_(20 Seconds) Inducer OFF
Interpurge(15 Seconds) ]
T
NO
YES
YES
YES NO
IA/nedr_H;aE_oWF_FOF,F
Soft Lockout:
Error Code
Flashes Z_
:SOFT LOCKOUT IS RESETAUTOMATICALLYAFTER ONE HOUR WITFACALL FOR HEAT ACTIVE
HC:R: LCoYcE:IobG IqH: ECsAErL:: :yHcL i%: :O_W: :C:l :HGEPcOoV_ETRRToOL:HE CONTROL.
Page 63
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