Why is my Aprilaire Thermostat heat pump blowing cool air in heat mode?
If your heat pump is blowing cool air in heat mode, or warm air in cool mode, with your Aprilaire Thermostat, check System Setting #12 (Reversing Valve). You can also try changing the System Mode to Cool, and set the temperature level below the current room.
General| Thermostat Type | Digital |
|---|---|
| Programmability | 7-day programmable |
| Humidification Control | Yes |
| Dehumidification Control | Yes |
| Ventilation Control | Yes |
| Air Filtration Control | Yes |
| Humidity Control | Yes |
| Temperature Control | Yes |
| Indoor Humidity Display | Yes |
| Outdoor Temperature Display | Yes (with optional sensor) |
| Type | Programmable |
| Display | Touchscreen |
| Power Source | 24 VAC |
| Stages | 2 Heat / 2 Cool |
| Power Method | Hardwired |
| Connectivity | Wi-Fi (optional) |
| Warranty | 5 years |
Details general features of the Aprilaire 8400 series thermostats, including display and access.
Provides instructions on how to locate and identify the specific model number of your thermostat.
Explains the controls and display elements for non-programmable thermostat models.
Explains the controls and display elements for programmable thermostat models.
Instructions on how to select system modes like HEAT, COOL, AUTO, OFF, and EM-HEAT.
Guide on adjusting the desired temperature setting using the UP and DOWN buttons.
Details on choosing fan modes: ON, AUTO, and CIRC for air circulation.
Instructions for battery replacement and using the reset button for factory defaults.
Step-by-step guide to setting the current time and day on the programmable thermostat.
Explanation of the four daily schedule sections (WAKE, LEAVE, RETURN, SLEEP) and their purpose.
How the Progressive Recovery feature adjusts heating/cooling to reach set temperatures on time.
Instructions for modifying start times and temperatures for WAKE, LEAVE, RETURN, and SLEEP events.
How to temporarily or permanently override programmed temperature settings.
Information on how to register your Aprilaire thermostat for warranty purposes online or by mail.
To Next Page
