Thelin GNOME - TROUBLESHOOTING GUIDE

GNOME DIRECT VENT GAS HEATER
28
TROUBLESHOOTING
WARNING: All servicing and troubleshooting of gas controls and high voltage circuits should be done by a
qualified service technician.
As a guide to help you understand the functioning and potential problem areas in your heater, use the following
chart. When in doubt, do not hesitate to call your service representative or the gas supplier who furnishes you
with natural gas or propane.
PROBLEM
POSSIBLE CAUSE
Pilot will not light
 A gas shut-off valve is turned off
 The gas control valve is not turned to pilot
 The gas control valve wasn’t pushed in and/or the
igniter wasn’t pushed repeatedly
 Piezzo lighter is not sparking
Main burner does not come on
 The pilot has gone out
 The burner on/off switch is turned off
 The thermostat is disconnected or set too high
Fan does not work or is sluggish
 Cord is unplugged
 Heater is not up to temperature and sensor has not
activated
 Fan needs cleaning
Thermostat does not work
 Pilot has gone out
 On/Off switch is turned to Off
 Thermostat is set too high
Flame is dirty and orange, and glass is sooty
 Logs are not placed properly or something may be
obstructing burn
 Air adjustment may be required by a service
technician
Flames are too short
 Hi/Lo flame adjust knob is turned too low (see
Figure 9)