RTH221
RTH221 is Programmable Thermostat User Guide manufactured by Honeywell.
feature that helps prevent damage to the pressor of your air conditioning system. Because damage can occur if the pressor is restarted too soon after shutdown, this feature forces the pressor to wait five minutes before restarting. During the wait time, the message Cool On flashes on the screen. When the safe wait time has elapsed, the message stops flashing and the pressor turns on.
Programmed schedule
2.
2.1 Using the schedule
Press the Run button to follow the programmed schedule. You can have up to four periods in one day. Each period can be programmed with a different temperature setting.
Wake Leave Return Sleep
Morning temperature Daytime temperature Evening temperature Night temperature
To program a period, you need to set its start time and its two temperature settings (one when the thermostat is in cooling mode and another one when it is in heating mode). The same period and settings are repeated...
