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 grgblv on October 19th, 2015
Honeywell Rth230b Thermostat With New Batteries Doesn't Display The Flame Symbol
Hi, I have a Honeywell RTH230B thermostat with new batteries but it doesn't display the flame symbol and doesn't turn on a gas boiler. What should be done to fix the issue?Thanks
Current Answers
Answer #1: Posted by TommyKervz on October 20th, 2015 1:00 AM
TommyKervz
Member since:
January 10th, 2013 Points: 17,776,823
Member since:
January 10th, 2013 Points: 17,776,823
Check if the batteries are properly installed.
Disconnect the unit from the power for 30 min
Examine all of the wiring, and replace any loose wires or blown fuses before trying the power again.
Click here if further assistance is needed.
Related Honeywell T8401C1015 Manual Pages
Installation Instructions - Page 1
.... Can shock individuals or short equipment circuitry. radiant heat from ducts. -
T8400C, T8401C Electronic Thermostats
INSTALLATION INSTRUCTIONS
The T8400C and T8401C Thermostats provide singlestage, non-programmable temperature control for °F or °C. Temperature indication can be affected by non-volatile memory.
Batteries are not required because setpoints are held permanently...
Installation Instructions - Page 2
... all wiring to wall. All wiring must comply with the heating or cooling equipment in the F position.
The E setting allows the fan to the E position.
Typical location of straight or wraparound wiring connections; T8400C, T8401C ELECTRONIC THERMOSTATS
YES NO
NO 5 FEET
[1.5 METERS]
NO
M11338
Fig. 1. Refer to Fig. 6 through 10 for most systems...
Installation Instructions - Page 3
... REQUIRED WHEN THE SYSTEM SWITCH
IS IN THE OFF POSITION. Restrict wiring to shaded area (T8400C shown).
Typical hookup of T8400C in heat-cool system with two transformers. 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
M16432
Fig. 4.
M20880
Fig. 8. M13275
Fig...
Installation Instructions - Page 4
... equipment. When using the switches located at the top of the thermostat onto the wallplate to latch.
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. Typical hookup of the thermostat case.
Typical hookup of the thermostat to Wallplate
1.
Slide the FAN switch in the bottom left corner...
Installation Instructions - Page 5
... switch is on , the ▼ key turns it off ; if heat is off , ▼ turns it on . if cool is off , ▼ turns it on . When the keys are shown separately on the digital display, press either the ▲ or ▼ key once.
INCREASE SETTING DECREASE SETTING
T8400C, T8401C ELECTRONIC THERMOSTATS
3. To increase the temperature setpoint press...
Installation Instructions - Page 6
... lower the temperature setting below the room temperature. Press the ▲ key again.
M18420
CHECKOUT
Heating
1. In conventional systems, the system turns on initial startup, the T8400C and T8401C Thermostats go into a five-minute delay. When using an electric heat thermostat, the fan starts immediately.
3. Press the ▼ key to overshoot the setpoint).
9.
Cooling
CAUTION...
Installation Instructions - Page 7
... ELECTRONIC THERMOSTATS
Fan
1. The fan should shut down. When using an electric heat thermostat, the fan starts and stops with the cooling equipment. 3.
Be sure all equipment responds correctly to raise the temperature setting above the room temperature. In heating, the fan is controlled directly by the heating equipment and may start a few minutes after the heating...
Installation Instructions - Page 8
Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North
35 Dynamic Drive
Golden Valley, MN 55422
Scarborough, Ontario
M1V 4Z9
69-1740 J.S. 6-04
www.honeywell.com/yourhome Automation and Control Solutions
Honeywell International Inc.
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