What does a relay do in a furnace?
The troubles with faulty relays The electric relay in a furnace is responsible for relaying electrical power to the heating elements and the blower motor inside the furnace cabinet. The heating elements provide the heat to warm the air, and the blower motor sends this warmed air through the ductwork.
Do all furnaces have a fan relay?
Most furnaces and air handlers using a two-speed motor, a high speed for cooling and a lower speed for heating. This setup requires a 6-spade relay. Many newer appliances, particularly gas furnaces operate with a one-speed fan motor in heating and cooling mode; this requires a five spade relay.
What should I do if my heater is not working?
If your heater’s controls seem to be faulty, first unplug the unit and plug it back in to see if that resolves the issue. Next, check the heater’s thermostat (if it has one) and make sure it’s set to the correct setting. Try resetting it to see if that fixes the problem.
How can I tell if my AC relay has a problem?
AC compressor is not turning on. One of the most obvious signs that the AC relay may have a problem is that the compressor is not coming on at all. In most cases, when the AC is turned on you will be able to hear the compressor switch on.
Why is my central heating system not working?
Central Heating Problems. Problem: Certain parts of the house are not heating If your heater is unevenly distributing heat throughout your home, your issue could be attributed to two primary things: dirty air filters and inadequate ductwork. Check your air filters for dust and debris and change them accordingly.
What happens if the AC compressor relay goes out?
Without this relay, the AC compressor will not have power and the AC system will not function. The AC compressor relay is no different then other electrical relays – its electrical contacts will eventually wear or burn out, and the relay must be replaced.
