13 is limit circuit lockout, in which case your furnace would try and restart after 3 hours. The limit circuit is there to protect the furnace from overheating if there is insufficient airflow through the heat exchanger taking the heat away from the furnace and pushing it into your ductwork.
 LIMIT CIRCUIT LOCKOUT — Lockout occurs if the limit or flame rollout switch is open longer than 3 minutes or 10 successive limit trips occured during high-heat. Improper limit switch or no limit gasket. Dirty filter or restricted duct system.
Additionally, what does limit circuit open mean? Usually an open limit is due to a airflow problem which causes the heater to heat up and trip a limit, do you have a clean air filter?? or it could be worse and the heater may have rolled out due to a bad heat exchanger, in either case, have a licensed repairman come out to look at the heater.
Likewise, people ask, is there a reset button on a carrier furnace?
Press and release the raised red button at the center of the flame roll-out switch to reset the furnace. You can press the reset button up to three times before troubleshooting the furnace’s internal components or calling for repair service; allow 30 minutes between each reset.
Can you bypass furnace limit switch?
First, turn the power off to the furnace. If you have an ohmmeter, you can measure the resistance across the switch. If the temperature is below the setpoint, the resistance across the switch should be zero. If you do not have an electrical meter, you can temporarily bypass the switch and see if the furnace works.
How do you troubleshoot a carrier furnace?
Troubleshooting Carrier Furnace Problems Check the thermostat and make sure it set in the “heat” position. Make sure the unit is getting power. Inspect the fan. Check the SSU switch on your heater if the device is still not producing adequate heat. Change the furnace filter. Inspect the return air grilles.
What does a furnace limit switch do?
What Does a Limit Switch Do? The limit switch is a device that has two functions: first, it won’t allow the fan to turn on until the air generated inside your furnace is warm enough and second, it acts as a kill switch to the burner should the air temperature around the heat exchanger become too hot.
What is a redundant gas valve?
What is a redundant gas valve? A redundant gas valve has two or three valve operators physically in series but wired in parallel with one another. This built in safety feature allows any operator (pilot or main) to block gas from getting to the main burner.
What is a flame rollout switch?
The rollout switches are placed as a safety device around the burner area to sense the hot flame or hot exhaust thus shutting down the furnace so you do not get a fire or get carbon monoxide poisioning. If your rollout switch is having to be reset please call a service company to check your furnace out.
Where is the reset button on a Bryant furnace?
How to Find My Furnace Motor Reset Button Turn off the power to the furnace at the circuit breaker. The circuit breaker is clearly marked. Lift up the blower compartment cover to access the blower wheel and blower motor. Look for a small red or yellow button on the side of the blower motor. Press the reset button down if it has popped up.
Can you reset a limit switch?
Consult your instruction manual before resetting your furnace’s limit switch. The function of your furnace limit switch is to tell the fan when to turn off and on depending on the temperature in the home. It’s possible to reset the switch at home when necessary by following a few simple steps.
What causes a high limit switch to trip?
When a high limit switch gets tripped due to overheating, that contributes to wearing out the switch faster. One of the most common causes of furnace overheating is a clogged furnace filter.
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