Williams 4505621 Instruction Manual download pdf (Page 14)

Troubleshooting Floor Furnace

SYMPTOM

1. Flame too large.

2. Noisy flame.

3. Yellow tip flame.

4, Floating flame.

5. Delayed ignition.

6. Failure to ignite.

7. Burner won't turn off.

8. Rapid burner cycling.

9. Burner won't turn on.

POSSIBLE CAUSE

A. Pressure regulator set too high.

B. Defective regulator.

C. Burner orifice too large.

A. Too much primary air.

B. Noisy pilot.

C. Burr in orifice.

A. Too little primary air.

B. Clogged burner ports.

C. Misaligned orifices.

D. Clogged drafthood.

A. Blocked venting.

B. Insufficient primary air.

A. Improper pilot location.

B. Pilot flame too small.

C. Burner ports clogged.

D. Low pressure.

A. Main gas off.

B. Defect in gas valve.

C. Defective thermostat.

A. Poor thermostat location.

B. Defective thermostat or wiring.

C. Defective control valve.

A. Poor thermostat location.

B. Defective thermostat.

A. Defective control valve.

B. Defective thermocouple.

C. Defective thermostat.

D. Defective limit switch.

CORRECTIVE ACTION

Reset, using manometer.

Replace.

Replace with correct size.

See Item 1.

Reduce pilotgas.

Remove burr or replace.

Look for obstructions in air path.

Clean ports.

Realign or replace burner.

Clean.

Clean.

Look for obstructions in air path.

Reposition pilot.

Check orifice, increase gas.

Clean ports.

Adjust pressure regulator.

Open manual valve.

Replace.

Replace.

Relocate thermostat.

Replace or repair.

Clean or replace.

Relocate.

Replace.

Replace.

Replace.

Repair or replace.

Replace.

(continued next page)

-14-

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 20

Comments to this Manuals

No comments