Low Pressure Switch Furnace

The pressure switch fitting may have a restrictor inside do not remove.

Low pressure switch furnace.

It shuts the furnace down if it senses negative pressure created by the draft inducer motor. A pressure switch is designed to sense the negative pressure created by the draft inducer motor during the furnace startup and to shut down the furnace ignition if the air pressure is inadequate. Check the tubing from the inducer. The pressure switch is an indicator of pressure problems in the furnace.

The switch is there to prevent the furnace from running unless the correct venting air pressure is present. This protects your home from dangerous backdrafting which is when exhaust fumes are reintroduced into the system. The source of pressure switch problems can sometimes be a pain to track down. Coleman 32435972000 furnace vent air pressure switch genuine original equipment manufacturer oem part.

Over time your diaphragm can become coated or stiff which reduces its effectiveness. Continue reading below our video of the day. It should be clear. 4 7 out of 5 stars 29.

Which is why i made this video that go. Oem upgraded replacement for goodman furnace vent air pressure switch b13701 26 by goodman. The first method is to measure continuity and resistanc. The diaphragm in your pressure switch is a common location for problems.

4 8 out of 5 stars 54. Other problems that could cause the pressure switch to not open are a dirty blower wheel on the inducer. How to test pressure switch on a furnace. A furnace pressure switch is a safety device located near the draft inducer motor of a gas forced air furnace.

Pressure switches can malfunction due to age which can prevent accurate readings and result in faulty furnace cycling. If the pressure switch is stuck it does not send enough power to the inducer and therefore the ignition sequence does not begin. 4 7 out of 5 stars 90. Rheem climatek gas furnace vent air pressure switch replacement for part 42 24335 02.

Furnace pressure switch troubleshooting. A gas furnace pressure switch closes to allow current to pass through and start the ignition of the furnace. Pressure switches oem parts hvacr parts including air pressure switch 0 60iwc pressure switch kit pressure switch pressure switch air pressure. Also the fittings that the tubing fit into should be clear.