Trane unit Electric
2006-12-08 00:20:08 · 5 answers · asked by Anonymous in Home & Garden ➔ Maintenance & Repairs
Understanding your forced-air furnace
During normal operation, the burner on the furnace starts up, warming the heat exchanger and the air in and around the heat exchanger. When the air is warm, a fan control starts the fan to distribute the warm air into your home. This delay is built in so the fan does not start immediately and blow cold air on your feet.
When the room air near the thermostat is warmed to the set point, the thermostat turns the burner off. The fan continues to run until it has removed the heat from the heat exchanger. When the heat exchanger is cool, the fan limit control turns the fan off.
Hope this helps!
2006-12-08 00:57:19 · answer #1 · answered by Beamer 4 · 0⤊ 3⤋
First – let me clarify that Beamer is an absolute moron! You ask about electric and he answers gas – thanks for the help moron!
Two likely scenarios depending on what you have…
If you have a heat pump (which I suspect you do), the indoor thermostat likely has two stages of heat. The first stage called for would be to try to produce heat from the outdoor heat pump. If the outdoor unit is not working (or not keeping up with demand), the thermostat will kick in the electric heat strips on your indoor fan coil to satisfy the thermostat.
A typical delay for a thermostat is 10 minutes of outdoor heat pump run time before starting up the electric heat in the fan coil. This could easily match the scenario you are experiencing. Most heat pump thermostats have an EMERGENCY or AUXILLARY heat setting which will bypass the outdoor heat pump altogether and just use indoor heat strips to satisfy the heating demand. If you have this on your thermostat, simply select this setting and see if the 10 to 15 minute problem goes away. If so, you need your outdoor heat pump professionally serviced.
The second scenario is you have a straight electric furnace….
Electric furnaces use sequencers to delay-on the various heating elements when there is a call for heat. If they were to all come on simultaneously, there would be a dimming of lights in the home. To prevent this, each of the elements are “staged” on.
Suppose you have four elements total. The sequencer stages on element #1 (producing heat), delays two minutes and stages on element #2 (producing more heat), delays two more minutes and stages on element #3 (producing even more heat), then brings on the last element after another 2 minute delay. This arrangement works great – when it works (and no dimming of the house lights occur).
Now, suppose element #1 died last year – you would never know. Suppose element #2 died this year – likely you would even notice. Suppose element #3 died today – now you have six minutes of staging occurring before your start to feel heat from element #4. Getting close to your described problem huh? In this case – again your electric furnace needs professionally serviced. Thankfully elements are cheap.
FYI: A fan coil/heat pump scenario uses the same sequencing steps when there is a call for backup electric heat.
2006-12-08 11:55:16 · answer #2 · answered by frogpaws 2 · 1⤊ 0⤋
That's a good brand. Probably the reason is the duct work has to heat up also and it will take a few minutes for it to become as warm as the air coming through it.
2006-12-10 08:48:41 · answer #3 · answered by redbass 4 · 0⤊ 0⤋
Mine does the same in fact it will blow heat and then cold air till the thermometer kicks the heat on again. I am watching for logical answers to this one thanks for asking
2006-12-08 00:23:58 · answer #4 · answered by fortyninertu 5 · 0⤊ 0⤋
i'm assuming you're utilising organic gas, propane or heating oil. if so, examine your pilot gentle. If this is not igniting, the unit gained't come on. have you ever had your thermostat replace presently? if so, it ought to were stressed out incorrectly.
2016-11-30 07:45:08 · answer #5 · answered by ? 3 · 0⤊ 0⤋