One thing to try is, shutting down the direct power to the unit for approximately 5 minutes, then turn the power back on and retry the unit by turning up the temp on the thermostat, this normally resets the circuit board in the unit. If the problem still continues, you may be having trouble with the pressure switch, also check to see if there is a blockage of the air intake, such as a bees nest, or if you are where there is a lot of snow or ice this will also cause blockage of the air intake and must be cleared for proper operation, and will affect the pressure switch as well. Hope this helps !!!!
Answers & Comments
One thing to try is, shutting down the direct power to the unit for approximately 5 minutes, then turn the power back on and retry the unit by turning up the temp on the thermostat, this normally resets the circuit board in the unit. If the problem still continues, you may be having trouble with the pressure switch, also check to see if there is a blockage of the air intake, such as a bees nest, or if you are where there is a lot of snow or ice this will also cause blockage of the air intake and must be cleared for proper operation, and will affect the pressure switch as well. Hope this helps !!!!