PROBLEM
PROBABLE CAUSE
(The most recurring probable cause is listed first)
REMEDY
(Repairs should only be made by a qualified technician)
Inlet injection will not siphon chemical
Check valve in strainer clogged.
Chemical valve not open or clogged.
Strainer not submerged in solution.
Detergent hose cut or kinked.
Clean or replace. Rinse after each use.
Open chemical valve or clean.
Submerge strainer and replenish chemical.
Inspect hose, replace as necessary.
Water is emitted from the chemical
pickup tube
Check-valve malfunctioning.
Repair or replace check-valve.
Downstream injector will not siphon
chemical
Brass knob on injector is closed.
Unit not in low-pressure mode.
Detergent hose cut or kinked.
Strainer plugged or not submerged.
Internal injector parts corroded or stuck.
Outlet water temperature too high.
Open by turning counter clockwise.
Open dual wand or install low-pressure tip.
Inspect hose, replace as required.
Check screen on strainer pickup tube.
Disassemble, clean or replace.
Use with cold water (150° Maximum)
Pressure relief relieving water
Un-loader failure/Coil overheating/Excessive pressure.
Turn machine off, wait a few minutes and restart. If problem
continues, take in for repair.
Burst disk relieving water
Excessive over-pressurizing and system spikes.
Take in for system check.
Battery
Battery keeps losing voltage (For 12v
systems)
Battery voltage low.
RPM too low.
Engine charging system faulty.
Electrodes misadjusted.
Fuel pump pressure too high. Air band too far open.
Burner amp draw too high.
Have battery checked and load test, charge if low and replace if
necessary. Allow water to cool 2 minutes before shutting off
engine.
Engine RPM should be 3600 RPM with no load.
Check engine charging system – must have 16 amp output.
Adjust electrodes to maximum 1/8” gap.
Fuel pump pressure should be approximately 100 to 110 PSI.
Adjust for proper burn.
Check amp draw of burner motor – should be 11 amp or less.
Check amp draw of transformer – should be 4.8 or less.
Water Temperature
Discharge water temperature exceeds
recommended operating temperature
Burner input too high for conditions.
Water flow restricted.
High temperature limit switch faulty or set too high.
Decrease fuel pump pressure and/or fuel nozzle size.
Clean or replace nozzle of proper size. De-scale coil and clear
obstructions.
Replace or reset temperature limit switch.
Discharge water temperature not
reaching maximum operating
temperature
Burner input too low for conditions.
Increase fuel pump pressure and/or fuel nozzle size.
Burner System
– Diesel Fired
Refer to Burner Troubleshooting Chart on following pages
TROUBLESHOOTING GUIDE
15
