Tech Tip: F09 Error Causes

Many people often inquire about an F09 Error. Common causes of F09 Errors include: No spark Clean rectification probe Check venting for restrictions or obstructions Condensate backup ...
Read More

Adjusting Manifold Pressure

  I speak with a lot of contractors who have made the catastrophic mistake of tampering with the offset screw of the gas valve to adjust the system’s combustion.  Many mistook this for the throttle...
Read More