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Tracy RamseySep 10, 2025
Why does my COZY Furnace have a floating flame?
- DDonna McleanSep 12, 2025
A floating flame is caused by blocked venting. Clean the flue passageways to remove the blockage.
To Next PageTo Next PageWhy does my COZY Furnace have a floating flame?
A floating flame is caused by blocked venting. Clean the flue passageways to remove the blockage.
What causes too much heat from my COZY Furnace?
Too much heat can be caused by the combination control valve sticking open, which means you should replace the combination control valve.
What causes a COZY Furnace burner to not turn off?
If your furnace burner won't turn off, it could be due to a defective or sticking automatic valve, which would require replacing the valve. Another potential cause is excessive gas pressure (the supply gas pressure must not exceed 1/2 psi or 14” w.c.). If this is the case, contact the utility supplying the gas to correct the situation.
What causes incorrect gas input in my COZY Furnace?
Incorrect gas input can occur if the gas input hasn't been checked, so re-check it. Also, a clogged orifice can cause this issue. If the orifice is clogged, carefully clean it out with a smooth wood toothpick, being careful not to enlarge or distort it in any way.
What to do if the sparker won't light the pilot on my COZY Furnace?
If the sparker isn't lighting the pilot, first check the wire connections. If the connections are secure, the pilot flame might be too lean. Ensure the valve is in the 'on' position and check for any pilot restrictions. Also, make sure the manual reset switch is engaged by pushing the button.
How to reduce the flame size on my COZY Furnace?
A flame that is too large can be caused by a defective operator section of the gas valve, in which case you should replace the complete valve. Alternatively, the burner orifice may be too large; check with your local gas company for the proper orifice size and replace it if necessary. Also, if the furnace is installed above 2,000 feet, consult the orifice chart.
Why does my COZY Furnace have a yellow tip flame?
A yellow-tipped flame may be due to clogged main burner ports; clean them, but do not enlarge them. Another cause could be a clogged draft hood, so clean the draft hood. Also, check for dust or lint at the air mixer opening.
Why is my COZY Furnace flame so noisy?
A noisy flame can stem from several causes. The pilot could be noisy; try reducing the pilot gas with the adjusting screw on the combination gas control valve. If the noise is a whistle or resonance, there might be a burr in the orifice; remove the burr or replace the orifice, being careful not to enlarge it. Finally, excessive gas input can cause a noisy flame.
How to troubleshoot not enough heat from COZY Furnace?
If your COZY furnace isn't producing enough heat, it could be undersized for the space, especially if the room or dwelling has been enlarged. Have a professional calculate the heat loss and compare it to the appliance output (approximately 70% of the input). You can get this information from your gas company or installer. If the appliance is indeed undersized, consider replacing it with a correctly sized unit. Also, ensure the supply pressure is correct.
Why won't my COZY Furnace burner turn on?
Several factors can prevent your burner from turning on. First, ensure the gas valve is in the 'on' position. Check for 24 Volts to the valve. The thermostat might be defective, so inspect the wall thermostat. Check for 115 Volt Line Voltage by jumping the fan switch (the fan will come on). Also, verify if the auxiliary limit switch or blocked flue switch is open and push the red button to close it. Finally, the gas valve itself may be defective, requiring replacement.
General| Brand | COZY |
|---|---|
| Model | CF403D-H |
| Category | Wall Furnaces |
| Language | English |
