Bosch furnace error no blockage

When a customer suspects that there is no blockage in their furnace, they should first clean the furnace manually. The customer should take a long metal rod and poke it into the furnace’s flue. If they notice any obstacles in the way, they should use a fireplace brush to get rid of them.

As soon as they are done doing this, one of two things will happen: either the error will dissipate, or there will be no change in behaviour. However, if you then notice that the error reappears after cleaning your furnace, you know that there is a blockage somewhere else that needs to be solved by an expert technician.

No blockage is the error which appears if you try to turn the motor on and it doesn’t start. It can happen with a new furnace too.

Typically, this problem is solved by removing the power cord from the power supply and then plugging it back in again. If that fails, contact Bosch for possible solutions.

The furnace will continue to operate but without the ability to heat the home.

In the event of this error, first, check for blockages: inspect the filter and clean if needed, check for kinks in the exhaust venting system, and verify that there is a complete seal on the outdoor air intake near ground level.