Honeywell TL5110 Digital Non-programmable Thermostat Manual

Honeywell TL5110 Digital Non-programmable Thermostat Manual

This thermostat can be used to control an electric heating system such as a baseboard heater, a radiant ceiling, a radiant floor, a con- vector, etc.

Honeywell TL5110  Temperature Display and Setting

The thermostat normally  displays the actual (ambient) temperature.

  • To view the setpoint temperature, press once on either of the temperature adjustment buttons. The icon  appears during the setpoint display.

To change the setpoint temperature, press the appropriate but- ton until the desired value is displayed.

Honeywell TL5110 Specifications

  • Supply: 120/240 VAC, 50/60 Hz
  • Minimum load: 2 A (resistive only)

500 W @ 240 VAC

250 W @ 120 VAC

  • Maximum load: 12.5 A (resistive only)

3000 W @ 240 VAC

1500 W @ 120 VAC

  • Display range: 0 to 50°C (32 to 122°F)
  • Setpoint range: 5 to 30°C (40 to 85°F)
  • Storage: -20 to 50°C (-4 to 120°F)
  • Approval: c UL us

Honeywell TL5110 Troubleshooting




Thermostat is hot.

This is normal. Under normal operation, the thermostat housing can reach a temperature between 35 °C (95 °F) and 40 °C (104 °F).



Displayed tempera- ture is wrong.

Correct if any the following conditions applies:

  • The thermostat is exposed to airdraft.
  • The sticker on the thermostat’s screen has not beenremoved.
  • The thermostat is located near or above a heat source such as a lightdimmer.


Display disappears and reappears after a few minutes.

The thermal protection device on the heater has temporarily opened. This can happen if the heater is obstructed by furniture or curtain and has overheated, or if the heater’s thermal pro- tection device is too sensitive.

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Honeywell TL5110 Manual

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