Sunpak® Infrared Heaters
13
Basic Trouble Shooting Guide
Problem Possible Causes
No Spark to Pilot
• Voltage under 6 VDC
• Improper spark gap (3/16” or .188”)
• Loose ground wire
• Broken Electrode
• Faulty Ignition Module
Burner Won’t Light
• Air in gas line
• Low gas pressure
• Bad Gas Valve
• Manual Gas Valve turned “OFF”
Insufficient Gas Flow
Manual gas valve not fully “ON”. Turn valve handle to full
“ON” position.
• Burner orifice plugged. Remove heater top, remove burner
orifice (½” hex wrench) and thoroughly clean. Spiders ofte
orifice in the hole and make a web, blocking the orifice
Inconsistent Operation
• Variable gas pressure
(improperly sized gas line)
• Variable Voltage
• Wind exceeding 10 mph
• Tip angle exceeding 30 degrees
• Debris inside burner
• Erratic winds
Deterioration of Front Grill
• Sunpak heater must be installed in such a manner
as to allow the products of combustion or hot
gases to vent out the top of the heater. When
operating normally, only radiant heat passes
through the front grill. If conditions exist which force
hot gases through the front grill of the heater, the
installation must be altered to correct the condition.
Rumbling Burner Noise
• Rumbling burner noise, flare out of burner, and
losses of radiant heat are all symptoms of a
damaged infrared burner. These symptoms may
occur any time after the heater has warmed up.
Under these conditions the burner has been
damaged and must be replaced. Discontinue use
of the heater until heater is repaired.
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