3
69-1963EFS
Fig. 1. Thermostat wiring diagram.
Check Out Thermostat
!
Turn on the power to the heating system.
!
Turn setting knob all the way clockwise
; listen for clicking sound as switch makes contact.
Electric heater should begin operation.
!
Turn knob all the way counterclockwise
; listen for clicking sound as switch breaks contact.
Electric heater should shut off.
Setting Thermostat
!
Begin with setting knob at 70°F (20°C) on the scale.
!
If this setting is not satisfactory after at least two hours of operation, turn setting knob up to
raise the temperature, or down to lower the temperature. Move knob only a degree each time.
Troubleshooting
Your Honeywell thermostat requires little or no attention. Most problems can generally be traced to
the following:
Symptom
Checkout
Action
No heat.
Make sure power is on at main
service panel. Turn the
temperature setting knob fully
clockwise .
Heater should start to warm up within two minutes. If not,
contact qualified electrician to check thermostat and
heater.
Improper connections to
thermostat.
With power to circuit OFF, tighten all wiring connections.
Repair any frayed or broken wires.
Other.
Contact a qualified electrician for assistance.
Heater never turns off.
Turn temperature setting knob
fully counterclockwise
.
Heater should start to cool within minutes. If not, turn off
power at the main service panel, and contact qualified
electrician.
Thermostat setting and
thermometer reading
disagree.
Thermostat affected by drafts or
radiant heat.
Contact electrician to change the location. The thermostat
should be about 5 ft (1.5m) above the floor and on an
inside wall.
L1 (HOT)
L2
1
1
3
2
4
4
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
BREAKS ON POSITIVE OFF.
EXPOSED UNUSED LEADWIRES TO BE PROPERLY INSULATED.
THERMALLY ACTIVATED—BREAKS ON TEMPERATURE
RISE. MAKES ON TEMPERATURE FALL.
L2
L1
L1
T2
T1
T1
CT410A
CT410B
3
ELECTRIC
HEATER
CAUTION:
SPECIAL SERVICE CO/ALR SOLDERLESS CONNECTORS MUST
BE USED WHEN CONNECTING WITH ALUMINUM CONDUCTORS;
OTHERWISE, A FIRE HAZARD CAN RESULT.
TO
ELECTRIC
HEATER
M23412
1
2
3
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