If the blower runs, it proves power at the air handler. If warm air flows out of the registers, the aquastat could be out of adjustment or the time delay is malfunctioning. If the blower does not run and there is power to the air handler, a control has burned out or the blower motor needs checking. Do not put fingers or hands in the blower. Aside from sharp edges, it could start up unexpectedly and cause a serious injury.
Many air handlers have a safety switch that shuts off power if the door is removed.
Check that the door is correctly installed. Building Codes and Products are constantly changing. A reliable contractor can translate these changes into safety and comfort for the homeowner looking to build or remodel. At ImproveNet, our architects, contractors, and designers must meet certain standards. To learn more about the ImproveNet Pros, or to begin your home ImproveNet project click here.