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FAQs 1F97-391
1. My thermostat is reading
in Celsius. How do I change
it to Fahrenheit?
2. The display shows the
word
CHECK BCHECK B
CHECK BCHECK B
CHECK B
AA
AA
A
TTERTTER
TTERTTER
TTER
YY
YY
Y.
What does it mean?
3. How do I bypass (not use)
the program?
4. What functions do the
connecting terminals have on
the subbase?
Press PROGRAM
RR
RR
R
UNUN
UNUN
UN to make certain the thermostat is in the run program mode, then
press TIME
FWDFWD
FWDFWD
FWD and TIME
BB
BB
B
AA
AA
A
CKCK
CKCK
CK at the same time to enter the configuration menu.
Press TIME
FWDFWD
FWDFWD
FWD until you get to °C then press the
UP UP
UP UP
UP or
DODO
DODO
DO
WN WN
WN WN
WN arrow to select °F,
press PROGRAM
RR
RR
R
UNUN
UNUN
UN to return to normal operation.
CHECK BCHECK B
CHECK BCHECK B
CHECK B
AA
AA
A
TTERTTER
TTERTTER
TTER
YY
YY
Y on the digital display indicates low batteries. The
BB
BB
B
AA
AA
A
TTERTTER
TTERTTER
TTER
YY
YY
Y symbol
(not blinking) indicates a loss of power (24 volts) from the heating and cooling equipment
to the thermostat, or that the thermostat is operating on battery power only.
To bypass the program and operate the thermostat manually press the MODE
SYSY
SYSY
SY
STEMSTEM
STEMSTEM
STEM
button to select Heat or Cool (whichever you prefer) and press
HOLDHOLD
HOLDHOLD
HOLD. Use the Temp
UpUp
UpUp
Up
or Temp
DoDo
DoDo
Do
wnwn
wnwn
wn buttons to set the thermostat on the temperature you want. The tempera-
ture setting you choose will be held until you manually change it using the Temp
UpUp
UpUp
Up or
Temp
DoDo
DoDo
Do
wnwn
wnwn
wn buttons. The thermostat will remain in the
HOLDHOLD
HOLDHOLD
HOLD mode when you change
temperature and maintain whatever temperature you set. If you decide to return to the
program, press PROGRAM
RR
RR
R
UNUN
UNUN
UN to cancel the hold feature.
Typical terminals and functions:
HM1=Humidifier System 6=Zone Valve Y=Cooling System
G=Fan Relay W=Heating System HM2=Humidifier System
RC= Power (Cooling) RH=Power (Heating)