Error code flashes five times. Book says Rollout switches are bad. I have replaced all swithces and flame sensor. Furnace does same thing. Ignites and shut down after 10 seconds, flashes 5 times. Anyone Know my problem.
You probably have a cracked heat exchanger which is causing the rollout switches to trip.even the tiniest of cracks will cause the fan to blow the flame back into the unit and cause them to trip. check the heat exchanger for even the tiniest of cracks if so replace it. and be sure to have a carbon monoxide alarm in your home.
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turn a/c power off. place a jumper wire between both sides of switch, leaving wire attached on both sides. power on, set thermo to heat, if furnace stay lit after test, replace rollout switch. If furnace shuts down after short time it's not the rollout. please remove jumper after test.
just to be sure this is a gas fired furnace? - what make and model?
behind most not all are sensors behind or near the blower fan - these little buggers are easily missed if you have one - jumper the wires and see if it fires if it does this sensor need replacing -
look at the furnace and turn it on to see if the flames come on. Watch and see if they stay on for a period of time. If they come on then go out you may have a dirty flame sensor, if it goes out and then relights it may be a high limit switch getting weak. hope this helps.
Your furnace is off on a safety limit. Look for small thermal disks around the burner area they will have a usually red switch in the center and 2 wires coming into it. Reset this and watch furnace run. These are called rollout switches and they trip when you have flame rollout. SO WATCH IT RUN. If you have flame rollout you will most likely have a cracked heat exchanger if so you will need a new heat exchanger or new furnace. Next the number of flashes is important on some furnaces it will tell you what part is faulty. Count the flashes then on one of the furnace covers is the wiring diagram it will tell you what the flashes mean otherwise you can tell me and Ill help you out, WHen you reset the power on the furnace does it try to heat tell me what all happens when you shut the switch off then back on. when you turnit back on make sure the stat is calling for heat,
The heat exchanger is a bear to change. depending on the age of the unit it might be more practical to replace the unit. However unless you trust this service tech I'd get a second opinion, because it is rare that a heat exchanger will crack, plus by law he or she should have shut the furnace down do to carbonminoxde. Especially rare in Coleman Evcon series units.
Your centrifical swith is stuck open on your blend motor. I found that removing the blend motor housing and spinning the stuck motor (from setting over the summer) will get you out of a bind ,.but you may end up needing this centrifical switch (locatedon the bottom of the blend/fresh air intake) motor replaced.