Hi there! I understand you're experiencing issues with the condensate pump for your HVAC system. The Little Giant item #554425 Model # VCMA-20ULS, as well as the Utilitech pump you tried, appear to be having issues with backflow, with air bubbles and big gulps of air coming up the discharge tubing after the pumping process is finished.
Here are some steps you can take to troubleshoot the issue:
- Check the discharge tubing for kinks or clogs, as this can cause backflow issues and air in the discharge.
- Make sure the discharge tubing is properly positioned, with no dips or low points where water can accumulate and cause backflow.
- Inspect the pump for any signs of damage or wear, such as cracks or leaks.
- Check the electrical connections to the pump to ensure they are secure and not causing the issue.
- If you are not confident in performing these checks or troubleshooting the issue, it might be best to call in a professional to take a look and avoid causing any further damage to your HVAC system.
In terms of fixing the issue yourself, you will need the following tools and materials:
- A flashlight or other lighting source
Pros of fixing the issue yourself include saving money on repair costs and having a sense of accomplishment. However, fixing the issue improperly could result in further damage to your HVAC system, which could be costly to repair.