First, check and make sure that your gas is turned on.

Rheem gas furnace not igniting. But now, it is not igniting. The most common reason for r. The igniter gets very hot and glows bright orange to light the gas burner.

Turn power off, r emove the 2 wires from pressure switch, hold apart, turn furnace on. The glow plug is an essential part of the ignitor. The furnace is the only gas appliance in the house so i can't really test elsewhere with regards to the gas supply.

Sometimes, if you unplug your rheem water heater for five. Also, check that the power to the furnace is on. To determine if the igniter is faulty, remove the igniter.

If the igniter fails or cracks, the furnace won’t heat. After the exhaust fan starts, touch the 2 wires together and. One of the most common reasons a furnace is not igniting is when the line in which the furnace draws its fuel is either blocked or too small for your needs.

You have to blow across the. If your furnace won’t ignite, the source of the issue may be a broken flame sensor. As mentioned above, sometimes the cause of a furnace ignitor failing to ignite is due to a safety issue, such as a clogged air filter, for instance.

Finally, make sure the gas supply to the furnace is open. In cases where the glow plug. Dirty filters cause insufficient airflow and can prevent the furnace from starting.