Friedrich RT4 - Manual (Page 10)

8
caution!: Do not switch system to cool if the outdoor temperature is below 50°F (10°C). This can damage the
air conditioning system and may cause personal injury.
Action: Set the Mode switch to Cool. Press the button until the temperature setting is 3°F below the room
temperature.
Result: The A/C system and fan should turn on.
Action: Set the Mode switch to Off.
Result: The A/C should turn off (there may be a fan delay).
Action: Set the Mode switch to Heat. Press the button until the temperature setting is 3°F above the room
temperature.
Result: The heating systems and fan should turn on (there may be a time delay depending on your system).
Action: Set the Mode switch to Off.
Result: The heating system should turn off (there may be a fan delay).
Action: Set the Fan switch to On (continuous indoor fan operation).
Result: The blower fan should turn on.
Action: Set the Fan switch to Auto.
Result: The blower fan should turn off.
If the above test was successful, you have a proper installation.
If not:
Double check that wires are securely connected and are connected to the proper terminals. Consult the
troubleshooting section (see Page 10).
A Quick Test