Trouble shooting guide – Bonide Fog Rx Insect Fogger User Manual
Page 6

5
18. DO NOT incinerate cylinders or insecticide vessel. Propane cylinder vessels
should be disposed of properly when empty.
Trouble Shooting Guide
Symptom
Probable Cause
Corrective Action
No fog - Burner works
1)
Spray tip and/or end of
heater coil obstructed or 
clogged 
1)
Remove Spray tip and check for 
blockage. Clean spray tip to remove 
blockage. With spray tip removed, use 
a pipe cleaner to clear out carbon 
build-up that may be inside the burner 
coil. Replace spray tip and tighten 
securely. 
2) Pump plugged
2)
Remove Insecticide Vessel. With 
fogger on its side, carefully remove 
Plastic Pump Assembly Cover (be 
aware of spring & bearing inside cover) 
from fogger. Insert a small wire into 
hole in bottom of Pump Assembly 
(clearing any blockage). Carefully 
replace Plastic Pump Assembly cover 
with spring & bearing inside. 
3) Piston cup worn
3)
See parts & service on next page
4) Improper fogging material
4)
Use only insecticide for thermal 
fogging 
No fog-burner not 
working 
1)
Propane cylinder empty
1)
Replace propane cylinder
2)
Propane tank attached
improperly
2)
Check to see if propane cylinder is 
properly attached 
3)
Burner assembly fails to
light or will not stay lit
3)
Check igniter. Test lighting unit using 
a match. 
Dripping
1)
Spray tip loose
1)
Tighten spray tip securely
2)
Excessive insecticide output
2)
Decrease your pumping rate.
3)
Not at operating temperature
3)
Wait 60 seconds before pumping
Poor fog quality
1)
Improper fogging material
1)
Use only Bonide insecticide
2)
If fog is thin or yellowish
pumping rate is too low
2)
Increase your pumping rate.
3)
If fog is wet and dripping.
3)
Decrease your pumping rate
Flare up or un-
controlled burning 
1)
Fogger pointed toward the
ground
1)
Always operate your fogger level with 
ground. New propane bottles may be 
more likely to flare. 
2)
Insecticide ignited
2)
Stop pumping immediately. Turn 
propane valve off. Flame will stop after 
excess insecticide is eliminated 
Piezo ignitor will not 
spark 
Ignitor broken or worn out
Replace ignitor
