Rheem furnace troubleshooting

Having won universal respect, the company Rheem became the market leader of heating and water heaters. It is one of the few brands that span multiple areas of production of furnaces, as well as many accessories and components for them. Rheem troubleshooting system will help in case of breakage of furnaces of the brand. It is represented below in form of a useful table.

Odor, soot and smoky fire1. Insufficient combustion air
2. Lack of proper draft
3. Cracked/plugged heat exchanger
4. Burner not adjusted properly with combustion kit
5. Improper setting of barometric draft control
6. Oil leaks
7. Wrong nozzle size, or nozzle worn or partially clogged
8. Improper setting of electrodes
9. Plugged oil filter
10. Fuel pump cutoff valve not cutting off
11. Nozzle or electrodes improperly positioned
12. Leakage on return side of air distribution system
13. After drip, reflected heat, or impingement of flame
14. Improper or distorted end cone
15. Air leakage into oil pump supply line
16. Burner blower air inlet restricted or burner blower wheel dirty
17. Restricted flue
Delayed ignition1. Cracked, dirty or loose electrodes
2. Electrodes not property adjusted
3. Incorrect nozzle
4. Improper primary air adjustment
5. Faulty ignition transformer
6. Water in fuel oil
7. Incorrect pump pressure
8. Furnace not properly set*up
9. Air leakage into oil supply line
Burner will not operate1. Open switch
2. Open fuse or circuit breaker
3. Burner motor overload open
4. Thermostat improperly set
5. Burner primary control safety open
Burner motor runs but does not fire1. Oil supply insufficient
2. Faulty oil pump
3. Broken oil pump drive coupling
4. Coke deposits on electrodes
5. Air in oil supply line
6. Restricted oil supply line
7. Clogged nozzle
8. Restricted oil line filter
9. Leak in oil line
10. Failed ignition transformer
11. Electrodes not property set
12. Dirty fire detector
Pulsations1. Improper nozzle
2. Inadequate draft
3. Air in oil line
4. Clogged flue
5. Furnace not properly set*up
6. Partially clogged pump strainer or oil line filter
7. Nozzle plugged
8. Nozzle too far forward in air tube
9. Barometric damper set wide open
Cad cell not functioning1. Requires direct view of flame
2. External light effecting cell operation
3. Remove cad cell and check with an ohmmeter:
a. With cad cell covered, the resistance should be over 100K ohms
b. With cad cell exposed to room light, the resistance should beunder 1.5 K ohms
Low CO?1. High draft through furnace
2. Improper primary air adjustment
3. Damaged combustion chamber
4. Faulty nozzle
5. Incorrect oil pressure
6. Draft regulator improperly set
7. Incorrect fuel/air mixture
High stack temperatures1. Damaged combustion chamber
2. Furnace not set*up with combustion kit
3. Undersized return air
4. Overfired furnace
5. Dirty heat exchanger
6. High draft, barometric damper not properly set
7. Excessive temperature rise
8. Air shutter adjustment open too much.
High smoke reading1. Lack of combustion air
Burner motor runs but does not fire2. Inadequate overfire draft
3. Incorrect oil pressure
4. Dirty burner blower wheel
5. Incorrect nozzle
6. Faulty oil pump
7. Dirty oil
8. Burner motor not obtaining full speed
9. Damaged combustion chamber
10. Flame impingement
11. Incorrect fuel/air mixture
Poor draft • overfire and stack1. Improperly sized chimney or not enough chimney height
2. Holes or cracks in chimney
3. Restricted chimney
4. Too many 90 degree elbows in vent pipe
5. Outside chimney too cool
6. Cool flue gases
7. Barometric damper not properly set. sticking or in wrong location
8. Oil furnace and fireplace chimney interconnected
9. Heat exchanger passages plugged
10. Overfired furnace
11. Improper air shutter adjustment
Noisy Operation1. Bad coupling alignment
2. Air in oil supply line (use only good flare fittings)
3. Tank hum on two*pipe system and inside tank