: Indicate that there are no error codes stored in the memory system. If the pressure level doesnt rise to the setting, the switch will remain open. I'm assuming when you hit it the fuse in the indoor unit blew. How To Read a Carrier Furnace Error Code? A flashing LED can indicate a variety of things. Is gas supply ON? In most cases, the flashing will start, but the furnace will turn off just before it does. I have a Carrier Gas Furnace 58MXA100-20 that isn't working. If you keep manually turning the knob to stop a rinse or wash cycle, something has gone wrong. These error codes are not difficult to investigate. The first number indicates the number of flashes made by the yellow light, while the second the flashes made by the green light. Trying to fix the gas valve yourself can be dangerous, so leave it to the experts. Loose connections are a common source of trouble in electrical appliances because they cause arcing. If the valve is stuck, the furnace wont receive any gas, and the yellow light will illuminate. This is very dangerous. Check the circuit breaker or fuse box to ensure the furnace is getting power and hasnt tripped a circuit breaker. The most common problems with a gas furnace that you can evaluate are: Oil furnace troubleshooting follows a very similar set of procedures as described for gas furnaces. Turn off the power supply to maintain safety. This is all about an ignition problem. Check the circuit breaker or fuse box to ensure the furnace is getting power. HVAC Seer blames clogging on soot, leaves, bird nests, and other forms of debris. Engaging high-fire for a short period allows the carrier furnace to raise indoor temperatures significantly over a short period before it goes back to normal function. Slow amber flashing means that the furnace is operating normally and calling for heat. What it means: Carrier furnace code 31 typically indicates a problem with the high-pressure switch. Keep in mind that whenever the furnace control board shuts the unit down, gas shuts off immediately, the inducer continues running for 15 sec, and if the blower is running, it remains running at low-heat speed or reduces to low-heat speed for selected off delay. Both errors are usually auto-resolved after some time. Another common issue that can cause a system to quit working properly is an excessively dirty filter. This calls for filter checking and cleaning and tightening loose wires. Variable-speed 2-stage electronic condensing furnace (46 pages) To fix the issue, troubleshoot the furnace for low inlet gas pressure, a defective gas valve, low flame carryover, rough ignition, or an ungrounded flame sensor. Personality connector pl5 is either not connected or jumpered wrong. It is also letting you know that the switch for the high limit is not closed. PDF Visit www.carrier.com 58MVC Series 100 TROUBLESHOOTING GUIDE Are you sure the LED is orange? Leave it off for about 30 seconds and then turn it back on. : Indicate a problem with the flame itself. : Are a sign of regular operation with a call for heating. I'm writing this blog to share my experience. What it means: This code usually signifies a limit switch lockout. You dont want a defective carrier furnace to go unnoticed. Then activate the heating system once more. If the yellow light remains on, this could indicate that the furnace is stuck in high fire mode due to a defective gas valve solenoid. Are they clogged? The following is a summary of what each color and the different color combinations represent, depending on the number of flashes.
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