Consumers consider gas fireplaces superior to traditional fireplaces because they lack indoor air pollutants and soot. Gas fireplaces are also safe and need little maintenance. Minor gas fireplace repair and maintenance is something the home handyman can safely perform.
Pilot Light
A faulty pilot light is a common problem in gas fireplaces. They sometimes refuse to remain lit or they burn low. This is caused by several things. First, the draft spill switch may be open. This can be resent manually or with the auto reset. Or, the chimney is bringing in a draft which is blowing the flame out. This can be remedied by checking the vent cap for down draft causing damage. Also, check for obstructions around the opening of the chimney. These can push wind down the chimney. You could also have a weak thermopile generator if your pilot light has problems. The original thermopile will last for up to 5 years before it needs replacing. To tell if the generator has the correct voltage, you can test it with a voltmeter. A correct functioning generator should have a 500 millivolt 0.5 VDC reading.
Main Burners
The burners are a source of concern for gas fireplace owners. Sometimes they are slow to come on or they don’t start. This problem is caused by the gas valve having a low voltage of 500 or less. To resolve this, you should check the connection to the thermopile generator. A poor connection can cause a drop in the voltage and steal power from the gas valve. Soldering any loose connections or tightening loose wires onto the screw terminal board should remedy this problem.
Chimney
Soot collecting in the chimney or fireplace can cause a breathing hazard. Soot collection is caused by a poor air gas ratio. To keep the flame from burning too rich in primary air, the air intake and burners must be cleaned of dirt. Or, try opening the shutter of the burner inlet and making the needed adjustments. Adjusting the gas manifold will also correct the problem. But, this is a task for a qualified repairman. They will use combustion testing equipment to make sure the levels are correct.
You should inspect and maintain a gas fireplace annually to avoid problems. An annual inspection should include cleaning the pilot and burners, checking the gas pilot safety system to insure proper ignition and combustion, and checking the combustion venting and chimney draw. Routine gas fireplace repair and maintenance can be performed safely by the homeowner. It is necessary for your fireplace to function properly for years to come.