Honeywell RTH221B Use and Care Manual download pdf (Page 9)

RTH2300/RTH221

7 69-2727ES—02

M33612

Heat Off Cool Auto On

Fan

Heat Off Cool

Auto On

Fan

Set

Hold

Run

Select the system setting

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.

Set SYSTEM switch to control the

heating or cooling system.

CAUTION: EQUIPMENT DAMAGE

HAZARD. To prevent possible

compressor damage, do not operate

cooling system when outdoor

temperature is below 50°F (10°C).

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