Honeywell T8401C1015 Support Question
Honeywell T8401C1015 Support Question
Find answers below for this question about Honeywell T8401C1015 - Electronic Thermostat - 1 Heat/1Cool.Need a Honeywell T8401C1015 manual? We have 1 online manual for this item!
Question posted by sajl2 on September 17th, 2014
My Heat Wont Work And My Thermostat Went Blank
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Related Honeywell T8401C1015 Manual Pages
Installation Instructions - Page 1
... to the wall using the anchors and screws provided.
4. hot or cold air from heat to Wall
IMPORTANT Level only for operation. T8400C, T8401C Electronic Thermostats
INSTALLATION INSTRUCTIONS
The T8400C and T8401C Thermostats provide singlestage, non-programmable temperature control for 24V heating-cooling systems with manual changeover from ducts. - Cooling cycle rate is replacing a control...
Installation Instructions - Page 2
...either method is preset at the factory in a system where the G terminal is an electric heat system, set the switch to prevent electrical shock or equipment damage. E F
FAN OPERATION (FUEL...to the E position.
T8400C, T8401C ELECTRONIC THERMOSTATS
YES NO
NO 5 FEET
[1.5 METERS]
NO
M11338
Fig. 1. The shape of the terminals permits insertion of thermostat. The E setting allows the fan ...
Installation Instructions - Page 3
... POWER SUPPLY. Wiring connections (T8400C shown). G
Rc
R
24
W
B Y
O
1
L1 (HOT) L2
FAN RELAY
3
COOL DAMPER
3
HEAT DAMPER
COMPRESSOR CONTACTOR
HEAT RELAY
1 L1 (HOT)
L2
COOLING TRANSFORMER
HEATING TRANSFORMER
1 POWER SUPPLY. M20880
Fig. 8. T8400C, T8401C ELECTRONIC THERMOSTATS
KEEP WIRING IN SHADED AREA
G
Rc
R
W B
Y O
MOUNTING SCREW HOLE
WIRING ENTRANCE HOLE
MOUNTING SCREW HOLE...
Installation Instructions - Page 4
.... Use for most systems). In cooling, the fan starts and stops with the heating equipment. G
C
R W
3 Y
2 HEAT CHANGEOVER
B
2 COOL
O
CHANGEOVER
1
L1
(HOT)
24V
L2
TRANSFORMER
COMPRESSOR
FAN RELAY
1 POWER SUPPLY. T8400C, T8401C ELECTRONIC THERMOSTATS
G C
R
W
B
Y
O
1
L1
(HOT)
24V
L2
TRANSFORMER
HEAT RELAY
COOL RELAY
FAN RELAY
1 POWER SUPPLY. Slide the FAN switch in...
Installation Instructions - Page 5
... the temperature setpoint on and off .
if cool is off, ▼ turns it off ; M14686
5
69-1740 Off: Both heating and cooling are shown separately on . INCREASE SETTING DECREASE SETTING
T8400C, T8401C ELECTRONIC THERMOSTATS
3. To increase the temperature setpoint press the ▲ key. M14682
Set Room
AuFtAoNOn
FAN SWITCH
CoSoYl SOTffEMHeat
M14678A
Fig...
Installation Instructions - Page 6
... outdoor temperature is for the cycle rate options and the corresponding system equipment. Press the ▼ key to display the heat cycle rate of the ▲ key momentarily displays 01. T8400C, T8401C ELECTRONIC THERMOSTATS
NOTE:
In installer setup mode only, each press of 1, 3, 4, 5, 6, 9, or 12. When the
keys are released, these two-digit...
Installation Instructions - Page 7
... raise the temperature setting above the room temperature. The fan should shut down.
When using an electric heat thermostat, the fan starts and stops with the cooling equipment. Press the ▲ key to On. T8400C, T8401C ELECTRONIC THERMOSTATS
Fan
1. NOTE: To bypass the five-minute delay, see the Optional System Checkout section. In cooling...
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