Therma-Stor Products Group Ultra-Aire 100V owner manual Refrigerant Charging, Fan Replacement

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FOR HVAC INSTALLER AND HOMEOWNER

No dehumidification, compressor does not run but fan runs with fan switch and ventilation timer OFF and humidity control turned to ON.

1.Defective compressor run capacitor (Sec. 5.6). 2.Loose connection in compressor circuit (See Fig. 4). 3.Defective compressor overload (Sec. 5.6A). 4.Defective compressor (Sec. 5.6).

5.Defrost thermostat open (Sec. 5.8).

Fan runs with fan switch and ventilation timer OFF, but compressor cycles on & off.

1.Low ambient temperature and/or humidity causing unit to cycle through defrost mode.

2.Defective compressor overload (Sec. 5.6A). 3.Defective compressor (Sec. 5.6).

4.Defrost thermostat defective (Sec. 5.8). 5.Dirty air filter(s) or air flow restricted.

Fan does not run with fan switch in either position. Fan does not run with ventilation timer activated. Compressor runs briefly but cycles on & off with humidity control turned to ON.

1.Loose connection in fan circuit (See Fig. 4). 2.Obstruction prevents fan impeller rotation. 3.Defective fan.

4.Defective fan relay.

Fan runs with fan switch ON. Fan does not run with ventilation timer activated.

1.Defective ventilation timer.

2.Time not correct on ventilation timer. 3.Ventilation timer set to manual & switched OFF.

Evaporator coil frosted continuously, low dehumidifying capacity.

1.Defrost thermostat loose or defective (Sec. 5.8). 2.Low refrigerant charge

3.Dirty air filter(s) or air flow restricted. 4.Excessively restrictive ducting connected to unit.

Unit not providing ventilation. Ventilation timer notoperating correctly.

1.If timer is not functioning correctly, reset timer and reprogram (Sec. 3.5)

2.Check control wire connections (check connections at damper also)

3.Defective fresh air damper (Sec. 5.9)

7.4 Refrigerant Charging

If the refrigerant charge is lost due to service or a leak, a new charge must be accurately weighed in. If any of the old charge is

left in the system, it must be recovered before weighing in the new charge. Refer to the unit nameplate for the correct charge weight and refrigerant type.

7.5 Fan Replacement

The centrifugal fan has a PSC motor and internal thermal overload protection. If defective, the complete assembly must be replaced.

1.Unplug the power cord.

2.If an outlet duct is connected to the unit, remove it. 3.Remove the cabinet side.

4.Remove the 3 screws attaching the electrical box located in front of the fan to the base.

5.Disconnect the fan leads. Black from the fan relay and white from the run capacitor.

6.Pull the oil tubes out of the fan motor.

7.Remove the nuts & bolts holding the fan outlet flange to the cabinet end and remove the fan.

8.Reassemble the new fan by reversing the above procedure.

7.6 Compressor/Capacitor Replacement

This compressor is equipped with a two terminal external overload and a run capacitor, but no start capacitor or relay (See Figure 4).

CAUTION-ELECTRICAL SHOCK HAZARD: Electrical power must be present to perform some tests. These tests should be performed by a qualified service person.

7.6A Checking Compressor Motor Circuits

Perform the following tests if the fan runs but the compressor does not with the fan switch OFF and the humidity control ON.

1.Unplug the unit, remove the cabinet side and the electrical connection cover on the compressor top.

2.Plug in the unit and turn the humidity control to ON. Check for

110volts from compressor terminal R to overload terminal

3using an AC voltmeter. If voltage is present, go to step

3.If no voltage, there may be a loose connection in the compressor circuit. Test each component for continuity. See the appropriate section if a defect is suspected.

3.Unplug the unit, then disconnect the red and yellow wires from compressor terminals R & S. Using an ohmmeter, check continuity between the points listed below.

4.Compressor terminals C and S:

No continuity indicates an open start winding. The compressor must be replaced. Normal start winding resistance is 3 to 7 ohms.

5.Compressor terminals C and R:

No continuity indicates an open run winding. The compressor must be replaced. Normal run winding resistance is .5 to 2 ohms.

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Ultra-Aire 100V Installer’s & Owner’s Manual

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Contents Air Filtration DehumidificationFresh Air Ventilation Serial NoTable of Contents Safety Precautions Safety PrecautionsInstallation For Hvac Installer onlySpecifications Intended Application for Ultra-Aire4C Ducting for Fresh Air Quiet Installation ControlsHumidity/Fan Control Panel Fan/Filter Switch Ventilation Timer and Humidity Control PanelHumidity Control Adjustment Ventilation TimerHigh Efficiency Air filter DEH 3000 Digital Control 2A Install Instructions 2B WiringDEH 3000 Digital Control Installation Instructions Dehumidification 2C Auxiliary relay operation2D Dehumidifier lockout/activation AC sensor Engage A/C during dehumidification2F Testing 2E Location3C On/Off Setting For Hvac Installer and Homeowner3B Setting 3D Setting Clock TimeFor Hvac Installer only and Homeowner 3F Fan Setting and OperationOperation 3H Intermittent or Programmed Ventilation 3I Temperature Cutout Programming 3J Default SettingsMaintenance ServiceRefrigerant Charging Fan ReplacementCompressor/Capacitor Replacement 6A Checking Compressor Motor Circuits6C Replacing a Compressor, Nonburn Out Remote Controls6B Replacing a Burned Out Compressor 7A Humidity Control7B Programmable Ventilation Timer Defrost ThermostatElectric Ventilation Damper ULTRA-AIR 100V Electrical Schematic ULTRA-AIRE 100V Pictorial Electrical Diagram ULTRA-AIRE 100V Service Parts List QTYULTRA-AIRE 100V Optional Parts List 28 30 33 29 30 33 36ULTRA-AIRE 100V External Insulation KIT ULTRA-AIRE 100V Control Panel Installation ULTRA-AIRE 100V Dehumidifier Limited Warranty PO Box 8680 Madison, WI Phone 608-222-5301 Fax

Ultra-Aire 100V specifications

The Ultra-Aire 100V by Therma-Stor Products Group is a powerful and efficient ventilating dehumidifier designed to tackle excess moisture in residential spaces. Known for its compact design and advanced technology, the Ultra-Aire 100V is an ideal solution for basements, crawl spaces, and high humidity areas.

One of the main features of the Ultra-Aire 100V is its high extraction capacity. With the ability to remove up to 100 pints of moisture per day, it effectively manages humidity levels, helping to prevent mold growth, mildew, and structural damage. This unit is equipped with an energy-efficient compressor that ensures optimum performance while minimizing energy consumption, making it an environmentally friendly choice for homeowners.

In addition to its powerful dehumidification capabilities, the Ultra-Aire 100V incorporates innovative technologies for enhanced functionality. The unit is designed with a built-in digital humidity control system, allowing users to set their desired humidity level with precision. The humidity control automatically adjusts the unit's operation, ensuring consistent moisture levels throughout the home.

Another key characteristic of the Ultra-Aire 100V is its convenience in installation and operation. The unit can be ducted into existing HVAC systems or operated as a standalone unit, providing flexibility to fit various home configurations. Its compact size also makes it easy to install in tight spaces, such as crawl spaces and attics, without sacrificing performance.

For added convenience, the Ultra-Aire 100V features a user-friendly interface. The digital display provides clear visibility of the current humidity level and operational status, while the built-in timer allows for programming operational schedules. This means homeowners can set the dehumidifier to run during specific times, optimizing performance and energy usage.

Durability is another hallmark of the Ultra-Aire 100V. Constructed with high-quality materials, this unit is built to withstand the challenges of damp environments, ensuring long-lasting performance. Additionally, its advanced filtration system captures airborne particles, improving indoor air quality by removing allergens and dust.

In conclusion, the Therma-Stor Products Group Ultra-Aire 100V stands out as a reliable dehumidification solution. With its high extraction capacity, energy-efficient operation, user-friendly controls, and durable build, this dehumidifier is an excellent choice for homeowners seeking to maintain a healthy and comfortable indoor environment. Whether combating humidity in a basement or managing moisture in a crawl space, the Ultra-Aire 100V proves to be an indispensable tool for humidity control.
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