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Re: My (Rheem)electrical heater is not heating the
Check all your manual reset limits. There are two wires that go to a small disk about the size of a penny. In between those wires is a small button. Press the button firmly. You will have between 2 to 5 of these. There is also a limit switch located on the back wall of the unit that enters in the heat exchanger but it is not resetable that could be bad. You will need to check all of these. They can be jumped temporarily by removing the wires and adding a small wire.
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I'm not familiar with the Rheem Corsair gas furnace, but the filter will be somewhere, filtering the return air. Is the furnace installed as an upflow, down flow or horizontal? Locate the blower door, open it up then work your way back on the duct that is returning air to the blower. Sometimes homes will have a filter return grill in a hallway ceiling. The grill has a couple nuts that can be removed, the grill swings down and houses the filter.
Earl, is this a furnace heater for your house? And are you referring to the blower that distributes the heat throughout the house? And does this unit have a flame exhaust blower? This last blower is a small blower in the unit itself, if it has one you usually can spot it.
terrylove.com > Forums > HVAC Heating & Cooling Mar 7, 2014 - 16 posts - 5 authors
Hi everyone, I'm having a problem with my Broan Electric furnace lately. Sometimes the blower motor doesn't want to switch on. Sometimes it ...
Check to see if your unit has a heat sequencer. This is usually the problem with most furnaces. If it is bad, it will make the fan blower run all of the time. If you are not a electrican, you may want to get a electricin to look at it.
sonds like u have a bad safety switch they r round and have 2 wires on them usually and u can check them by taking the wires off of them and checking continuity thru them there might be one on the blower housing also either that or ur blower relay may be bad and stuck closed
You will likely need to install an isolation relay in the W circuit from the thermostat. Some thermostats rob a small current through the W circuit to power the thermostat. This small current can be enough to start the fan circuit timer. You can test this by disconnecting W at the furnace and allowing the timer to shut down. If the fan shuts off with the W disconnected you can install a simple relay.
The relay coil will be connected to Common on one side and the W from the thermostat to the other. Then you will run a wire from R on the furnace to the relay and from the N.O. Contacts to the W terminal on the furnace. This will kill that signal that is starting the timer and the W can steal it's power through the coil back to common.
Is there a setting on the thermostat for Auto or Fan? If so, make sure it is in the Auto setting. You will have a contactor that turns on the elements and a relay for the fan. Follow the wiring diagram to see which relay energizes the fan then unplug it to see if the fan stops.
look at circuit board and follow wires that come from fan motor, if this is a standard motor black is high and it will be going to a prong that says cool, red is low and it will go to heat, you will have a yellow and a blue that are "parked" remove red park it were the blue is and put blue on heat, if this is a variable speed motor you will have to set dip switches via your equipment manual
no the older rheems had a sequencer for the heat that turned on the blower at the same time that the heat strios are energized. so the first thing that you need to do is figure out the sequencer that is keeping the fan running and get it replaced.
By sealed unit you mean that the burner air comes from outside of the house?
You have checked the heat exchanger for cracks by removing the burners and looking with a mirror and flashlight, correct, or had a service tech so?
The furnace burners have enough air and are burning clean (blue) with just a tip of orange at the end? You bought the house new and the fireplace has never been used? If it has been used to clean smoke for the house for whatwever reason I woudl start by havign the ducts cleaned.
Another possibility I have seen is insolation inside of ductwork breaking down.