Why does my carrier furnace shut off generally at night with error code 13 or 33? More context in the link
Error code 13:
- Cause: High limit switch tripped, indicating the furnace is overheating.
- Possible solutions: Check air filter, clean blower wheel, verify thermostat settings, ensure proper air flow.
Error code 33:
- Cause: Pressure switch open, indicating insufficient air flow.
- Possible solutions: Check air filter, clean condensate drain, verify blower motor operation, ensure proper ductwork.
Additional tips:
- Reset the furnace by turning off the power switch for a few minutes.
- Check for any loose or disconnected wires.
- Inspect the flame sensor for any dirt or debris.
- Call a qualified HVAC technician if the issue persists.
Related Questions
- What should I do if the flame sensor is dirty? Clean it with a soft cloth or lightly vacuum it.
- Can I replace the air filter myself? Yes, it is typically easy to access and replace.
- How often should I have my furnace serviced? Annual maintenance is recommended.
- What are the signs of a failing furnace? Strange noises, reduced heating efficiency, frequent breakdowns.
- How long does it take to fix a furnace error code? It depends on the issue, but most repairs can be completed within a few hours.
Hot Sale Products
- Carrier Infinity Series Thermostat
- Carrier Performance Series Furnace
- Carrier Comfort Series Air Conditioner
- Carrier Healthy Climate Air Purifier
- Carrier Edge Series Heat Pump
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