Heat & Glo Fireplace ST-38HV-AU - Manual (Page 28)

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3.5 TROUBLESHOOTING - ST-38HV-AU
With proper installation and maintenance, your new heater should provide years of trouble-free service. If
you do experience a problem, refer to the Troubleshooting Guide below. This guide will assist a qualified
service person in the diagnosis of problems and the corrective action to be taken.
SYMPTOM
I. Spark Ignitor will not light pi-
lot after repeated triggering
of red button.
II. Pilot will not stay lit after care-
fully following lighting in-
structions.
POSSIBLE CAUSE
A. Defective ignitor (no spark at
electrode).
B. Defective pilot or misaligned
electrode (spark at electrode).
C. No gas or low gas pressure.
A. Defective thermocouple.
CORRECTIVE ACTION
1. Check for spark at electrode and
pilot; if no spark and electrode
wire is properly connected, re-
place ignitor.
1. Using a match, light pilot. If pilot
lights, turn off pilot and trigger
the red button again. If pilot
lights, an improper gas/air
mixture caused the bad lighting
and a longer purge period is
recommended. If pilot will not
light - check gap at pilot - should
be 1/8 inch (3.2mm) to have a
strong spark.
If OK, replace pilot.
1. Check unit's shut-off valve and
remote shut off valves from
heater. Usually there is a valve
near the main. There can be
more than one (1) valve between
the heater and main.
2. Low pressure can be caused by
a variety of situations such as a
bent line, too narrow diameter of
pipe or even low line pressure.
Check for kinked lines. If none,
consult with plumber or gas sup-
plier.
1. Check pilot flame. Must impinge
on thermocouple. Clean and or
adjust pilot for maximum flame
impingement on thermocouple.
2. Be sure wire connections from
thermocouple at gas valve termi-
nals are tight and thermopile is
fully inserted into pilot bracket.