1. Introduction
This manual provides essential instructions for the installation, operation, and maintenance of your Amana PHWT-A200 Accessory Thermostat. This device is designed to integrate with Amana Packaged Terminal Units (PTUs) to provide precise temperature control and enhanced user comfort. Please read this manual thoroughly before installation and operation to ensure proper function and safety.
The Amana PHWT-A200 thermostat allows users to easily adjust heating and cooling settings, manage fan operation, and monitor room temperature for optimal environmental control within spaces equipped with compatible Amana PTUs.
2. Safety Information
- Professional Installation Recommended: Installation of this accessory involves electrical wiring. It is strongly recommended that installation be performed by a qualified HVAC technician or licensed electrician to prevent electrical shock, property damage, or injury.
- Disconnect Power: Always disconnect power to the Packaged Terminal Unit (PTU) at the main service panel before installing, servicing, or removing the thermostat. Failure to do so can result in electrical shock or equipment damage.
- Electrical Codes: All wiring must conform to local and national electrical codes.
- Proper Use: Use this thermostat only for its intended purpose as an accessory for compatible Amana PTUs.
- Avoid Moisture: Do not expose the thermostat to water or excessive moisture.
3. Package Contents
Upon opening the package, verify that all components are present:
- Amana PHWT-A200 Accessory Thermostat
- Mounting Hardware (screws, wall anchors)
- User Manual (this document)
4. Installation and Setup
Important: Ensure power to the PTU is disconnected before proceeding with installation.
4.1 Mounting the Thermostat
- Choose an appropriate location on an interior wall, away from direct sunlight, drafts, or heat sources that could affect temperature readings.
- Carefully separate the front cover of the thermostat from its base plate.
- Position the base plate on the wall and mark the drilling locations for the mounting screws.
- Drill pilot holes and insert wall anchors if necessary.
- Secure the base plate to the wall using the provided mounting screws.
4.2 Wiring Connections
Refer to the wiring diagram provided with your Amana PTU and the PHWT-A200 accessory for specific connection points. Generally, the thermostat will connect to the low-voltage control terminals of the PTU. Ensure all connections are secure and correctly matched.
- Connect the thermostat wires to the corresponding terminals on the PTU.
- Double-check all connections for accuracy before proceeding.
4.3 Final Assembly and Power-Up
- Once wiring is complete, carefully reattach the front cover of the thermostat to its base plate.
- Restore power to the Amana PTU at the main service panel.
- The thermostat display should illuminate, indicating successful power-up.
- Perform an initial test by setting the thermostat to both heating and cooling modes to ensure the PTU responds correctly.
5. Operating Instructions
The Amana PHWT-A200 thermostat features a clear digital display and intuitive buttons for easy operation.
Figure 1: Front view of the Amana PHWT-A200 Thermostat, showing the digital display and control buttons. The display shows '72' and 'COOL'. Buttons include 'HEAT COOL', 'Up Arrow', 'Down Arrow', and 'Fan'.
5.1 Display Overview
- Large Digits: Indicate the current room temperature or the setpoint temperature.
- Mode Indicator: Displays the active operating mode (e.g., "COOL", "HEAT").
5.2 Control Buttons
- HEAT/COOL Button: Press this button to cycle through the available operating modes: Heat, Cool, and Off.
- Up Arrow (▲) Button: Press to increase the temperature setpoint.
- Down Arrow (▼) Button: Press to decrease the temperature setpoint.
- Fan Button (🗨): Press to cycle through fan settings (e.g., Auto, On). In Auto mode, the fan runs only when heating or cooling is active. In On mode, the fan runs continuously.
5.3 Setting the Temperature
- Press the HEAT/COOL button to select your desired operating mode (Heat or Cool).
- Use the Up Arrow (▲) or Down Arrow (▼) buttons to adjust the temperature setpoint to your preferred level. The display will show the setpoint as you adjust it, then revert to the current room temperature after a few seconds.
6. Maintenance
6.1 Cleaning the Thermostat
To maintain optimal performance and appearance, periodically clean the exterior of the thermostat.
- Wipe the surface with a soft, damp cloth.
- Do not use abrasive cleaners, solvents, or chemical sprays, as these can damage the plastic and electronic components.
- Ensure no moisture enters the internal components.
6.2 Battery Replacement (If Applicable)
Some thermostat models may use batteries for power or memory backup. If your PHWT-A200 model requires batteries, a low battery indicator will typically appear on the display. Refer to your specific model's instructions for battery type and replacement procedure. Always use fresh, high-quality batteries.
7. Troubleshooting
If you encounter issues with your Amana PHWT-A200 thermostat, refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| No display or unresponsive buttons. | No power to the PTU or thermostat. Incorrect wiring. Dead batteries (if applicable). |
|
| PTU not responding to thermostat settings. | Incorrect mode selected. Wiring issue. PTU malfunction. |
|
| Inaccurate temperature reading. | Thermostat location affected by drafts, direct sunlight, or heat sources. |
|
If problems persist after attempting these solutions, contact a qualified HVAC technician for assistance.
8. Specifications
- Model Number: PHWT-A200
- ASIN: B082MQ3M1H
- Package Dimensions: 5.31 x 4.92 x 1.46 inches
- Item Weight: 7.2 ounces
- Compatibility: Designed for Amana Packaged Terminal Units (PTUs)
- Date First Available: March 3, 2022
9. Warranty and Support
For specific warranty information regarding your Amana PHWT-A200 Accessory Thermostat, please refer to the documentation included with your original Amana Packaged Terminal Unit or contact Amana customer support directly. Warranty terms and conditions may vary.
For technical support or service inquiries, please contact your authorized Amana dealer or visit the official Amana website for contact information.
