L.B. White 250 Norseman - Manual (Page 14)

Troubleshooting Information
PROBLEMS CAUSES REMEDIES
1. Pilot will not light. * Fuel supply valves closed. * Open fuel supply valves.
* Pilot button not fully depressed. * Depress pilot button completely.
* Pilot orifice is plugged. * Clean or replace pilot orifice. (DO NOT insert sharp
instruments in orifice holes, blow out with compressed
air.)
* Screen at inlet of pilot orifice is * Remove screen and clean or replace screen.
plugged.
* Restriction in gas hose or * Remove hose or pilot line from heater and blow
pilot line. out with compressed air or replace if necessary.
* Air in gas line. * Push in pilot button (normally 30 seconds is
sufficient) on pilot valve to purge air from
line (usually necessary at time of installation).
* Pilot safety gas control is defective * Replace entire pilot safety control valve.
2. Pilot lights but will not * Restriction in gas hose or pilot line. * See remedy for same cause in Problem #1.
stay lit when pilot
button is released.
* Insufficient time allowed for pilot * Hold in pilot button for 30 seconds to allow proper
light to heat up thermocouple. warm up.
* Loose thermocouple. * Tighten thermocouple at gas control and at pilot bracket.
* Defective thermocouple. * Replace thermocouple.
* Pilot orifice is plugged. * See remedy for same in Problem #1.
* Defective pilot safety control valve. * Replace entire pilot safety control valve.
* Improper gas pressure. * Set pressure according to pressure on dataplate.
3. Main burner will not * Main burner valve closed on heater. * Open all valves.
light.
* Pilot light not lit. * Light the pilot.
* Burner orifice plugged. * Clean the burner orifice.
4. Burner flame lifting * Fuel pressure set too high. * Set pressure according to pressure on dataplate.
off burner.
* Blockages in burner orifice or at * Clean suspected area with soft brush, dry cloth,
primary air inlets of burner. or compressed air.
5. Heater does not seem * Gas supply valves not fully open. * Open valves completely.
to be delivering
maximum heat output. * Burner orifice plugged. * Clean burner orifice with compressed air or replace.
* Low fuel supply pressure. * Consult propane gas supplier. Cylinder or tank needs
replacement or refill. Regulator needs adjustment.
Check for use of proper regulation and fuel gas.
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