: Press the FAN button or wait for the screen to time out to save your settings. 4. Key Features to Test
Verify that the liquid crystal display (LCD) powers up immediately. System Testing and Verification
⚠️ If you are installing this on a fan coil unit, consult the wiring diagram typically found on the machine itself for the specific connections between the control panel and the fan coil's electrical box.
Route the thermostat wires through the hole in the mounting base.
Press and hold the key for about 10 seconds until the display changes.
If hot air comes out in cool mode, you likely have a heat pump with incorrect O/B wiring. Reverse the O/B wire or change the O/B reversing valve polarity in the tech setup.
Once wires are secured (tighten screws to 5-6 in-lbs – snug but not crushing) and DIP switches are set:
Open = Active, Closed = Disabled.
Avoid mounting on exterior walls, near air discharge vents, or in direct sunlight. These factors cause "ghost" temperature readings that lead to inefficient cycling. 3. Setup and Configuration
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Carrier 33tbac01 Installation Manual Top Online
: Press the FAN button or wait for the screen to time out to save your settings. 4. Key Features to Test
Verify that the liquid crystal display (LCD) powers up immediately. System Testing and Verification
⚠️ If you are installing this on a fan coil unit, consult the wiring diagram typically found on the machine itself for the specific connections between the control panel and the fan coil's electrical box. carrier 33tbac01 installation manual top
Route the thermostat wires through the hole in the mounting base.
Press and hold the key for about 10 seconds until the display changes. : Press the FAN button or wait for
If hot air comes out in cool mode, you likely have a heat pump with incorrect O/B wiring. Reverse the O/B wire or change the O/B reversing valve polarity in the tech setup.
Once wires are secured (tighten screws to 5-6 in-lbs – snug but not crushing) and DIP switches are set: System Testing and Verification ⚠️ If you are
Open = Active, Closed = Disabled.
Avoid mounting on exterior walls, near air discharge vents, or in direct sunlight. These factors cause "ghost" temperature readings that lead to inefficient cycling. 3. Setup and Configuration