System switch – Honeywell PRO TH3000 Series User Manual

Page 7

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5

69-1776EFS—01

PRO TH3110D / TH3210D

ENGLISH

M29417

The

SYSTEM switch can be set to control

your heating or cooling system, depending
on the season.
• Cool: Cooling system control.
• Off: All systems are off.
• Heat: Heating system control.
• Em Heat: Emergency & Auxiliary Heat

control. Compressor is locked out.
(Select models only.)

System switch

Set

SYSTEM switch to control the

heating or cooling system.

CAUTION: EQUIPMENT DAMAGE HAZARD.
Do not operate cooling system when outdoor
temperature is below 50°F (10°C).

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