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A (1) Turn down the damper
(2) Properly reduce the air volume and increase the inlet air temperature
(3) Take measures to increase the exhaust gas temperature
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A (1) Do a good job of chimney insulation
(2) Reset the set value of the temperature control
(3) Reduce the air distribution volume
(4) Reduce the height of the chimney
(5) Increase furnace temperature
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A (1) The high/low gas pressure switch fails;
(2) Process air pressure switch failure;
(3) The air pressure of the project is too low;
(4) The interlock circuit is broken.
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A (1) The ignition transformer is burnt out;
(2) The high-voltage wire is damaged or falls off;
(3) The gap between the relative dimensions of the ignition rod is too large or too small;
(4) The electrode is broken or shorted to the ground;
(5) The spacing is not appropriate;
(6) The ignition transformer is burnt out.
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A (1) Restore gas pressure
(2) Clean the burner
(3) Recovery of combustion air
(4) When the air coefficient is large, reduce the air ratio. If the diameter of the fire hole is too small, change the position of the fire hole or increase the fire hole
(5) Replace the flame detector
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A (1) Gas pressure drop
(2) The top of the burner is dirty
(3) Insufficient combustion air
(4) Burner flame leakage
(5) Main detector failure
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A 1. Gas shortage
2. Combustion is insufficient air
3. Burner flame out
4. Large air coefficient
5. The flame detector is malfunctioning
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A 1. Resumption of gas supply
2. Recovery combustion air
3. Reduced air ratio
4. Replace the flame detector
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A 1. No gas
2. Gas excess
3. Small flame valve not open
4. The ignition electrode discharge to the ground or the two-stage electric discharge is weak
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A 1. Resumption of gas supply
2. Gas ratio adjustment
3. Repair the wiring from the controller to the ignition solenoid valve or replace the solenoid valve and controller
4. Reinstall the ignition electrode or replace it with a new one.
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A 1. External flame detected on standby
2. Too much light inside the burner
3. UV short circuit
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A 1. Eliminate external light sources
2. Furnace cooling
3. Clean furnace carbon deposits
4. Replace the UV
