Prodott Overview
The Lux Pro PSDH121B is a non-programmable thermostat designed specifically for heat pump systems. It supports 2 heat and 1 cool stages, providing reliable temperature control for your home. This model features a large, easy-to-read backlit display and simple temperature adjustment controls.

Quddiem view of the Lux Pro PSDH121B Non-Programmable Thermostat, showing the digital display and control buttons.
Karatteristiċi Ewlenin
- Setup ta' malajr: Designed for easy installation and immediate use.
- Dejjiema: Constructed with durable materials for extended reliability.
- Mod tat-Test: Temporarily disables the compressor delay for testing purposes.
- Limiti tat-temperatura: Allows setting high and low temperature boundaries.
- Vertical or Horizontal Orientation: Flexible mounting options to suit your space.
- Display Kbir Backlit: Ensures clear visibility of temperature readings and settings.
- Mode and Fan Control: Intuitive controls for system mode (Heat, Cool, Off, Emer) and fan operation (Auto, On).
- Simple Temperature Adjustment: Easy-to-use UP and DOWN buttons for setting desired temperature.
- Kontroll tal-Kalibrazzjoni: Jippermetti l-irfinar tal-qari tat-temperatura.
- Temperature Swing Adjustability: Offers 9 levels of temperature swing for customized comfort.
- Compressor Delay: Features a selectable 2 or 5 minute compressor delay.
- Fahrenheit or Celsius Selection: User-selectable temperature display unit.

Diagram illustrating key features such as horizontal/vertical mount, dual power, large backlit display, and 5-year warranty.
Kompatibilità tas-Sistema
The LUX PSDH121B thermostat is designed for use with single-stage heat pump systems that include auxiliary and/or emergency heat. These systems are typically known as 2-stage sħana, 1-stage sistemi ta 'pompa tas-sħana kesħin.
Sistemi Kompatibbli:
- Heat Pump without Auxiliary Heat (24V)
- Heat Pump with Auxiliary Heat (24V)
Mhux Kompatibbli Ma':
- 24V Cooling Only Systems
- Linja Voltage (120-240V) Systems
- Portable Space Heaters
- Plug-in Air Conditioners

Visual representation of compatible and incompatible HVAC systems for the PSDH121B thermostat.
Installazzjoni u Setup
Kontenut tal-Pakkett:

The package includes the Lux Pro PSDH121B Thermostat, 2 ST screws, 2 wall anchors, a wire label, and this instruction manual.
Dijagramma tal-Wiring:
Refer to the following diagram for typical wiring of a heat pump system with auxiliary heat, also wired as emergency heat. Ensure to use either "B" or "O" terminal, but not both, depending on your heat pump's changeover valve type.

Detailed wiring diagram for connecting the PSDH121B thermostat to a typical heat pump system with auxiliary/emergency heat.
Immuntar:
The thermostat can be mounted in either a vertical or horizontal orientation. Use the provided screws and wall anchors for secure installation.
Istruzzjonijiet Operattivi
Aġġusta tat-Temperatura:
Uża l- UP (▲) u 'L isfel (▼) arrow buttons located below the display to increase or decrease the desired temperature setting.
Għażla tal-Modalità tas-Sistema:
The system mode switch allows you to select between different operating modes:
- Kessaħ: Activates the cooling function.
- MITFI: Itfi kemm it-tisħin kif ukoll it-tkessiħ.
- SĦANA: Jattiva l-funzjoni tat-tisħin.
- EMER (Emergency Heat): Activates the emergency heating system, typically used when the primary heat pump is not functioning.
Selecting Fan Mode:
The fan mode switch controls the fan operation:
- AUTO: Il-fann jaħdem biss meta s-sistema tat-tisħin jew tat-tkessiħ tkun qed taħdem b'mod attiv.
- FUQ: The fan runs continuously, regardless of heating or cooling calls.

Illustration of the temperature adjustment buttons and mode/fan switches on the thermostat.
Manutenzjoni
Sostituzzjoni tal-batterija:
The thermostat requires 2 AA batteries for operation. When the battery indicator appears on the display, replace the batteries promptly to ensure continuous operation. To replace, gently pull the thermostat body away from the wall plate to access the battery compartment.
Tindif:
Imsaħ il-barra tat-termostat b'ċarruta ratba uamp drapp. Tużax tindif jew solventi li joborxu.
Issolvi l-problemi
| Problema | Kawża Possibbli | Soluzzjoni |
|---|---|---|
| L-ebda wiri jew skrin vojt | Batteriji mejta jew bla enerġija. | Replace batteries. Check circuit breaker for HVAC system. |
| Is-sistema ma tirrispondix għas-settings tat-termostat | Incorrect wiring, system mode, or fan mode. | Verify wiring connections. Ensure correct system mode (Heat/Cool/Emer) and fan mode (Auto/On) are selected. |
| Il-qari tat-temperatura jidher mhux preċiż | Thermostat location or calibration issue. | Ensure thermostat is not exposed to direct sunlight or drafts. Use calibration control if available (refer to advanced settings). |
| Heat pump short cycles or runs too frequently | Compressor delay setting or temperature swing. | Adjust compressor delay (2 or 5 minutes) or temperature swing settings to allow for longer cycles. |
Speċifikazzjonijiet
| Brand | LUX |
| Isem tal-Mudell | PSDH121B-010-FBA |
| Dimensjonijiet tal-Prodott | 1"D x 3.5"W x 4.7"H |
| Tip ta' Kontrollur | Imbotta Buttuna |
| Kulur | Abjad |
| Użi Speċifiċi Għall-Prodott | Pompa tas-Sħana |
| Tip ta' Kontroll tat-Temperatura | Diġitali |
| Teknoloġija tal-Konnettività | Bil-fili |
| Komponenti Inklużi | PSDH121B-010 Mechanical Non-Programmable Thermostat |
| Sors tal-Enerġija | AC DC |
| Piż tal-oġġett | 0.09 Lira (1.44 uqija) |
| Voltage | 24 Volts |
| Materjal | Plastik |
| Tip ta 'Wiri | Diġitali |
| Daqs tal-Iskrin | 2 Pulzier |
| Metodu ta' Kontroll | Mess (Buttuni) |
| Tip ta 'Immuntar | Mount Wall |
| Dawl ta' wara | Iva |
| Batteriji Meħtieġa | 2 batteriji AA |
| UPC | 021079031214 |
| Manifattur | EME Delaware |
| Data L-Ewwel Disponibbli | 5 ta’ Mejju, 2005 |
Garanzija u Appoġġ
Informazzjoni dwar il-garanzija:
The Lux Pro PSDH121B Thermostat comes with a 5-year limited warranty. For detailed warranty terms and conditions, please refer to the documentation included with your product or contact LUX customer support.
Appoġġ għall-Klijent:
For technical assistance, troubleshooting, or warranty claims, please contact LUX customer support. Visit the official LUX websit għal informazzjoni ta' kuntatt u riżorsi addizzjonali.
Note: Always ensure to consult a qualified HVAC professional for complex installations or repairs.





