| Problem |
Observed |
Possible Cause |
Solution |
| Motor starts, unit will not ignite. |
No spark. |
Igniter wire not connected. |
Remove top and reconnect. |
| |
|
Improper igniter gap. |
Readjust to .050/.055. 1/8"
|
| |
|
Faulty transformer. |
Replace. |
| |
|
Faulty spark plug/igniter cracked. |
Replace. |
| |
Spark is present. |
No fuel or bad fuel. |
Drain use fresh fuel.. |
| |
|
Pump pressure incorrect. |
Adjust pressure to specs. |
| |
|
Fuel filter blocked. |
Replace. |
| |
|
Seal leak pump/motor.. |
Check, repair or replace.. |
| |
|
Restricted or worn nozzle. |
Clean or replace. |
| |
|
Cracked or disconnected hose. |
Replace or reinstall. |
| |
Runs with cover off. |
Dents in cone or cover deflect air flow through burner. |
Repair or replace parts. |
| |
|
Fan blade bent, pitch off. |
Replace fan. |
| |
|
Nozzle warm |
replace nozzle |
| |
|
|
|
| Motor does not run or runs at slow speeds. |
Spark is present. |
Broken rotor or blades. |
Replace rotor, blades and nylon insert drive. |
| |
|
Improper rotor clearance. |
Adjust to specs. |
| |
|
Dirt on rotor face. |
Clean or replace. |
| |
|
Faulty motor bearing. |
Replace motor. |
| |
|
Open motor winding. |
Replace motor |
| |
|
Faulty capacitors. |
Replace capacitor. |
| |
|
Blade on motor bent or hitting housing. |
Repair dents or replace parts. |
| |
No spark. |
Low voltage to heater |
Check electrical supply source and cord for a minimum of 105VAC. |
| |
|
Bad igniter assembly. |
Replace. |
| Motor does not start. |
External causes. |
Broken or frayed wires on cord. |
Repair or replace cord. |
| |
|
Faulty in-line thermostat. |
Repair or replace.. |
| |
|
Low voltage supply. |
Check electrical supply source and cord for a minimum of 105VAC. |
| |
Internal causes. |
Faulty high limit switch. |
Test and replace if necessary. |
| |
|
Reset button not reset fully. |
Completely push in or replace. |
| |
|
Bad circuit board. |
Repair or replace. |
| |
|
Bad motor capacitor |
Replace |
| Heater ignites and burns but than shuts off in less than a minute. |
Safety control trips out. |
Faulty or dirty photocell. |
Clean or replace. |
| |
|
Faulty safety control/printed circuit board. |
Replace. |
| |
Unusual order or burning of eyes. |
Dirty photocell. |
Clean photocell and check for correct pump pressure. |
|
|
Poor fuel flow from low pressure. |
Adjust correct air pressure. |
| |
|
Air filters restricted or dirty. |
Clean or replace. |
| |
|
Restriction in nozzle or burner head. |
Clean nozzle and burner or replace. |
| |
|
Fuel cap not vented. |
Clean or replace. |
| Heater runs for 30 minutes then puffs and shuts off. |
Not running. |
Transformer going bad. |
Replace. |
| Frequent plug fouling or delayed ignition. |
Starts hard. |
Spark plug location. |
Adjust location per specs. |
| |
|
Wrong or dirty fuel. |
Drain and replace with clean, correct fuel. |
| Cannot adjust air pressure. |
Smokes or burns eyes poor heat. |
Worn nozzle. |
Replace. |
| |
|
Air leak. |
Check air lines for cracks. |
| |
|
O-ring missing between filter plate and compressor plate. |
Replace. |
| |
|
Air line fitting or filter body loose. |
Tighten. |
| |
|
Plugged nozzle. |
Clean or replace. |
| |
|
Defective nozzle seal/O-ring. |
Replace. |
| |
|
Dirty output filter. |
Replace. |
| |
|
Dirty seat or ball in relief valve assembly. |
Clean relief valve and seat. |
| |
|
Spring in relief valve stuck or defective. |
Replace spring. |
| |
|
Worn or broken rotor or vanes. |
Replace rotor and vanes. |
| |
|
Hose barb on pump cracked |
Replace |
| Runs indoors but not out doors in cold weather |
Not running. |
Water in fuel. |
Drain replace fuel and fuel filter. |
| |
|
Improper fuel. |
If weather is below zero degrees,(-18C), kerosene should be used as only fuel. It may also be necessary to add a de-icer. |
| |
|
Low air pressure. |
Adjust pressure. Clean or replace air filters. Check for air leaks or restriction in fuel and air lines. |
| |
|
Incorrect nozzle or spark plug adjustment. |
Adjust nozzle spacing. Check spark plug alignment. |
