Honeywell RTH221 Manuale Proprietario

Troubleshooting

If you have difficulty with your thermostat, please try the following suggestions. 

Most problems can be corrected quickly and easily.

• 

Check circuit breaker and reset if necessary.

• 

Make sure power switch at heating & cooling system is on.

• 

Make sure furnace door is closed securely.

• 

Make sure fresh AAA alkaline batteries are correctly 

installed.

• 

Set system switch to Heat. Make sure the temperature is 

set higher than the Inside temperature.

• 

Set system switch to Cool. Make sure the temperature is 

set lower than the Inside temperature.

• 

Wait 5 minutes for the system to respond.

Make sure heating and cooling temperatures are set to 

acceptable ranges:

• 

Heat: 40° to 90°F (4.5° to 32°C).

• 

Cool: 50° to 99°F (10° to 37°C).

• 

Compressor protection feature is engaged. Wait 5 minutes 

for the system to restart safely, without damage to the 

compressor.

• 

Set the System switch to Heat, and set the temperature 

level above the current room temperature.

• 

Set the System switch to Cool, and set the temperature 

level below the current room temperature.

For assistance with this product, please visit http://yourhome.honeywell.com or 

call Honeywell Customer Care toll-free at 1-800-468-1502.