Tempstar Furnace Won T Ignite

If any of these things aren t right you won t get ignition.

Tempstar furnace won t ignite.

To determine if the igniter is faulty remove the igniter and inspect. Check that the thermostat has power to it if your furnace won t turn on. If you have hot surface ignition the ignitor may be broke. The pilot light or ignition sensor is usually the most common issue when your furnace will not ignite.

Remove the front panel and look for the ignitor sensor. If it s an intermittent pilot system there may be other things going on to where no ignition sequence is taking place. If the igniter is not cracked use a multimeter to test the igniter for continuity. Take the aluminium pilot tube off the gas valve start up and see if gas actually comes out of the pilot fitting and if you have 24v on the 2 blue wires the igniter may be bad that should cause the mini igniter to glow when it gets 24v.

Answered by a verified hvac technician. Check that the thermostat is on. If the igniter fails or cracks the furnace won t heat. Set the temperature you would like for test purposes just set about 10 degrees hotter than the current temperature to see if the furnace turns on.

A faulty or dirty ignition or sensor is a relatively easy fix so follow these steps and you may be able to solve the problem yourself. It kicks on repeatedly but won t ignite. Refer to your user manual to locate the ignitor. Ignitor won t light tempstar nug5125bkb1 gas furnace.

To fix the furnace that won t start turn off the power to the furnace and turn off the gas. Check that the thermostat is in the heating mode of operation. It is usually located near where the flames shoot out of the burners.