COMMBOX-600
The COMMBOX-600 is a "Plug and Play" controlled power distribution panel for frost protection, ice and snow melting applications. Specification Sheet Installation Manual

Choose a category
Wiring
Browse guides and FAQs for Wiring.
Miscellaneous questions
Browse guides and FAQs for Miscellaneous questions.
Preparing for your project
Browse guides and FAQs for Preparing for your project.
Programming
Browse guides and FAQs for Programming.
Troubleshooting
Browse guides and FAQs for Troubleshooting.
Questions & Answers
Select a category to filter the available help articles.
1 Can I use the Commbox or Resibox with single phase electric?
The BOX system can be used with single-phase electric power. Click "Read More" for details.
Learn more2 How many Mats or Amps can I connect to the CommBox?
The CommBox-600 is equipped with four (4) 50Amp 3-Phase relay contactors. This means that at 2-phase, you can connect up to 200 Amps worth of power, but at 3-phase, you can connect 150A per contactor.…
Learn more3 What are the amperage capabilities of each Box at each voltage?
The amperage capacity of the Resibox is 120A and for the Commbox it is 230 Amps. The Resibox has (4) of the 30A/2-pole contactors rated 120-277V for a total of maximum 120A load capacity. Click…
Learn more4 Do Warmup outdoor controls have GFEP protection?
Are you planning an outdoor heating project? Learn more about GFEP protection in different Warmup outdoor snow melting controls here.
Learn more5 What is the largest breaker allowed by code to power a snow melting system?
If you have a large outdoor snow melting project you may be wondering what the largest size breaker you can use is. Read more here.
Learn more6 Can one AirSense be used with two CommBoxes?
Out of the box, no. Each ‘box’ will need its own sensor to trigger. Click "Read More" for more details.
Learn more7 How long should I program my CommBox to melt snow?
It will vary depending on the depth of the cable in the material (concrete, pavers or asphalt) and the voltage input into the cable (280-240-277). Click "Read More" for details.
Learn more8 Will any third party sensor work with the CommBox or ResiBox?
The CommBox and Resibox have been programmed to work with a variety of third-party sensors. Click "Read More" for details.
Learn more9 Do I need to provide a transformer to wire in 3-phase?
To wire in 3-phase you need 3-phase supply power. Click "Read More" for details.
Learn more10 Programming your COMMBOX-600
The COMMBOX-600 is a “Plug and Play" controlled power distribution panel for frost protection, ice and snow melting projects. When receiving a signal from the sensor(s)m the contactors are activated, energizing your heating system. DIP…
Learn more11 What do each of the COMMBOX DIP Switches Mean?
Click "Read More" for further information.
Learn more12 Where are the DIP switches located on the COMMBOX-600?
The four DIP switches are located on the back of the thermostat unit on back of the door as shown in picture. Click "Read More" for details.
Learn more13 What does COMMBOX error code “SensErr 1” mean?
Error 1 “SensErr 1” will appear when there is a communication error with one (or more) snow sensors. Click "Read More" for details.
Learn more14 What does COMMBOX error code “SensErr 2” mean?
Error 2 “SensErr 2” will appear when the upper limit sensor is not connected or has short-circuited. Click "Read More" for details.
Learn more15 What Does the HI/LO Error message mean on my COMMBOX?
The HI/LO error message means that the ambient sensor readings (on snow sensor) are out of reliable measuring range. Click "Read More" for details.
Learn moreStill need help?
Our support team is here to help you.