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Technical Services Manager
North Alabama District
The CTB (central terminal board) is a board that is often replaced unnecessarily. A CTB is simply a junction board since there aren’t any logics or relays on the board to fail. Below we will cover the steps for checking the CTB:
2. Check for 24VAC on the ECON plug pin 1 blue wire – this is an output to the ECON
3. Check for 24VAC on the ECON plug pin 2 gray wire – this is a return wire from ECON.
Note: if you don’t have 24VAC, you will need to check the ECON PLUG in filter section or wire.
4. Check for 24VAC on the CLO1/COMP1 Plug pin 4. If you read 24VAC here, this will indicate there isn’t an issue with the ECON Section.
5. Check for 24VAC on pin 6 of the CLO1 PLUG
Note: if you don’t read 24VAC here, you have a pressure switch open.
Follow the information provided and you will be able to determine the cause of a compressor malfunction or if a compressor is not starting during a cooling call.
April 2024 Veto Pro Pac Promotion Check out the video and resources below to take advantage of our April Veto bag promotion.
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Black History Month takes place between February 1st and March 1st every year. It’s a time to celebrate and observe the accomplishments,
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| Anniston | (256) 241-3026 | 105 E D St, Anniston, AL 36201 |
| Auburn | (334) 734-8011 | 2295 1st Ave, Opelika, AL 36801 |
| Birmingham | (205) 250-7714 | 516 31st St N, Birmingham, AL 35203 |
| Dothan | (334) 836-1035 | 205 Wedgewood Dr, Dothan, AL 36303 |
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| Hardeeville | (843) 867-2143 | 132 Red Oaks Ln, Ridgeland, SC 29936 |
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(800) 282-4911
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| Company | Web Address | Description | |
 | Airzone | www.airzoneinc.com | Custom and Underfloor Air Handlers |
 | Aladdin Metal Products | www.aladdinmetalproducts.com | Curb Adapters and Roof Curbs |
 | Aprilaire | www.aprilaire.com | Indoor Air Quality Products |
 | Autani | www.autani.com | Building Automation and Controls |
 | Bard | www.bardhvac.com | Heat Pumps,Gas/Electric, and Wall Mounted Air Conditioners |
 | Bryant | www.bryant.com | Commercial, Industrial, Residential Heating & A/C Products and Controls |
 | Carrier | www.commercial.carrier.com | Commercial and Residential Heating & A/C Products |
 | Data Aire | www.dataaire.com | Precision Air Control for Data Processing Centers |
| DXair | www.dxair.com | Pool dehumidification systems | |
| First Company | www.firstco.com | Fan Coil Units | |
 | Global Plasma Solutions | www.gpshvac.com | Air Purification and Bi-Polar Ionization |
| Gree | www.greeusa.com | PTACs | |
| Hayes Fluid Controls | www.haysfluidcontrols.com | Hose Kits and Control Valves | |
| iAire | www.myiaire.com | Commercial Air Purification using ionization with energy savings | |
| IslandAire | www.islandaire.com | PTACs, Vertical Units, Water Source Heat Pumps | |
| i-Vu | www.commercial.carrier.com | Building Automation and Controls | |
| Magic Aire | www.magicaire.com | Fan Coil Units | |
| Micro Metl | www.micrometl.com | Roof Curbs, RTU Accessories, & ERVs | |
| Modine | www.modine.com | Gas-Fired Unit Heaters, Duct, Furnaces, Hot Water Cabinet Unit Heaters, Makeup Air, and Dedicated Outdoor Air Systems | |
| Network Thermostat | www.networkthermostat.com | Internet Thermostats, Wifi Themostats, Ethernet Thermostats | |
 | Payne | www.payne.com | Residential Heating & A/C Products |
 | Rawal Devices | www.rawal.com | Continuous Capacity Modulation and Dehumidification for DX Systems |
 | Renew Aire | www.renewaire.com | Fixed-Plate ERVs |
 | Totaline | www.totaline.com | Compressors, Parts, and Supplies |
 | United CoolAir | www.unitedcoolair.com | Modular All-Indoor HVAC Systems |
| Warren Technology | www.warrenhvac.com | Electric Heaters | |
| Wilo Pumps | www.wilo-usa.com | Pump Systems for HVAC and Water Supply and Sewage |
