
IHtHMW3lAI
PERFORMANCE CHECK
I
Onthe CT51A. the system switchcontrols
as
follows:
HEAT-heatingsystemonly operates.
OFF-heatingandcoolingsystemsare disconnected.
COoL-woling systemonlyoperates.
AUTO-fan onwhen heatingor coolingsystemoperates.
ON-fan operates continuously.
Thefanswitchcontrolsasfollows:
NOTE: Inthe followinginstruction,disregardcoonngdirectionsifnotapplicable
10
your
system.
I
R
er
to
the heatinglcoolingsystem.
To observe: Placethe systemswitchat HEATpositionand
fan
switchatAUTO.
Movethetemperaturesettingleverto
10"
F
(6"
C) aboveroomtemperature.The
rnaceshould turnon. Ashortwarm-upperiodmay
be
requiredbeforethesystemfan
Placesystemswitchat COOLpositionandmovetemperaturesettinglever
10"
F
0
On.
(6'
C) below room temperature. Thecoolingequipment should turn onand the
systemfan should turnon.
NOTE: Somesystemshaveatime delay thatcanpreventoperationup
to
30
seconds.
Turnthe
fan
switch
to
ON. Thesystem fan should turn on, andoperatecontinu-
0
ously. The fan should continue
to
operate at any system switch
or
thermostat
setting.
Your Honeywellthermostat requires
little
or
noattention.
Most
problems
can
generally be
traced
to
the
following:
TOM-No
heal
.EM
CORRECTIVE
ACTION
Blown
fuse
or
trippedcircuitbreaker.
..
Furnacepowerswitchisturned OFF.
No pilotflame.
Improperconnections
to
thermostat.
Replacefuse or resetcircuitbreaker.
Switch
to
ON.
Relightpilotflameper furnace
manufacturer's instructions.
With Power
to
furnaceOFF, tightenall
mountingandterminalscrews. Repair
brokenwires.
Defectivethermostat. (Here's how you
tell. Turn
power
to
furnace OFF. Then
removethe thermostat from thewall.
Disconnectonewire from the backof
the thermostat.Turn power
to
We
furnace
ON.
Touch loosewire
to
wire
stillconnected.Thethermostat is
defectiveif the burnercomes on.)
SYMPTOM-Furnace
turns
an
and
off
Burneronperiodis
tw
short.
Exchangethe thermostat
(See
warranty).
m-
Adjust the heatanticipatorlever
CLOCKWISE nonescalemark.Wait at
'
leastseveral hours to stabilize.
SYMPTOM-Major
swings
in
temperaturetareaterthan
lo
C
whentemperature
-
.-
stable).
Burneronperiodis
too
long. Adjustthe heatanticipatorleverCOUNTER-
CLOCKWISE
fi
onescalemark. Wait
severalhours for the system
to
stabilize.
Recheckthe thermostatpositionon wall. Use
a level
to
makesure itis level.
See
step
#3.
Callfurnacetechnician
to
changethe location.
Thethermostat should beabout
5
ft.
[I
.5
m]
above the floor and oninsidewall.
Callfurnacetechnician.
Moveswitch
to
COOL position.
Rep1
Moveswitch
to
ON position.
With power
to
furnaceOFF, tightenall
mountingandterminalscrews. Repair
brokenwires.
SYMPTOM-Thermostat sellingand thermostat readingdisagree
Thermostat isnotlevel.
Thermostat affected by draftsor
radiantheat.
Thermostat
is
out
of
calibration.
SYMPTOM-No
Cooling
Systemswitch inOFF or HEAT
position.
Blown
fuse
or tripjed
circuitbreaker.
Condenserswitch
(located
outdoors)
isturnedOFF.
Improperconnections
to
thermostat.
fuse
of
resetcircuitbreaker.
Defectivethermostat. (Here's how you
tell: Turn power
to
coolingsystem
OFF. Then removethe thermostat
fromwall. Disconnectwire from
Y
ter-
minal. Turnpower
to
coolingsystem
ON. Touch
Y
wireto terminal
R.
The
thermostat
is
defectiveif the compres-
sor
starts. Somesystems havea time
delay,
so
allowat least
2-3
minutes.)
Other.
1
Exchangethe thermostat
(see
warranty).
Contact servicetechnicianfor assistance.