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Premier Ductable Heaters
www.lbwhite.com
Owner’s Manual • Premier 350
26
-- Ignition control module sends 24 volts to the gas control
valve through the high limit switches.
-- Gas control valve opens.
-- Ignition occurs.
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-- Ignition spark is cut off.
-- Gas valve stays open.
-- Room warms to desired temperature.
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-- Gas control closes, burner shuts down.
-- Fan motor continues to run for 1 minute,
cooling the heat chamber.
-- Fan motor stops.
-- Heater shuts off.
-- Process starts again on a call for heat.
Fan Drive Components Troubleshooting
Refer to the following table to identify basic problems, causes and cures associated with V-Belt drive systems.
PROBLEM
CAUSE
CURE
Belt Slips
Pulleys worn (Belts bottoming out in grooves)
Replace pulleys
Oil or grease on belt
Clean pulleys or belt.
Belt Breaks
Improper belt installation
Belt pried over pulleys
using sharp or pointed
tools. Install new belt
properly.
Belt Jumps Pulley
Drive misaligned
Check and realign
Grooves
Dirt entering pulley
Remove belt, clean the
pulleys
Belt hitting belt guard
Realign guard (check
for loose or missing
guard
screws)
Belt Cracking
Dirt or grease on belt or aged belt
Remove dirt or
replace
belt.
Belt Wearing Rapidly
Belt hitting belt guard
Realign guard (check
for loose or missing
guard
screws)
Worn pulleys
Replace pulley
Dirt in pulleys
Remove dirt
IGNITION FAILURE SEQUENCE:
-- Trial for ignition takes approximately 10 seconds.
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ignition trial, the module goes into safety lockout (3
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-- Gas valve closes.
-- Ignition spark shuts off.
-- Fan motor stops.
-- To retry for ignition, the systems must be reset:
-- Turn the thermostat down and then up to call for
heat or unplug heater and plug it back in or
-- Position selector switch to off and then back to on.