31
Alpine TR42 Direct Vent Gas Fireplace
SERVICE INFORMATION
NOTE: Before troubleshooting the gas control system, be sure the external gas shut off is in the “ON” position
.
WARNING: TO PREVENT INJURY OR PROPERTY DAMAGE, REMOVE THE GLASS PANEL FROM THE
APPLIANCE BEFORE DOING ANY WORK ON THE GAS CONTROL SYSTEM. FAILURE TO DO SO COULD
RESULT IN GAS BUILD-UP AND EXPLOSION.
GAS SYSTEM TROUBLESHOOTING
PROBLEM
POTENTIAL-
CAUSES
CORRECTIVE ACTION
Spark igniter will
not light pilot.
Piezo wire loose
Defective Piezo ignitor
Piezo wire grounding out
Electrode is grounding out
Electrode is sparking at wrong
location
•
Check for spark at electrode and pilot. If no spark, disconnect
wire at electrode, put wire to ground, and try igniter again. If still
no spark follow the Piezo wire to Piezo igniter to see where
grounding may be occurring. Position electrode into pilot so gas
may be able to contact spark.
Pilot will not stay
lit after carefully
following lighting
instructions
Defective thermopile
Defective thermocouple
Thermopile / thermocouple
grounding out.
Loose thermopile leads
TP-THTP on valve
Defective automatic gas valve
•
Check pilot flame, must impinge on thermopile and thermocouple
•
Clean and/or adjust pilot so pilot is enveloped around thermopile
and thermocouple.
•
Be sure wire connections at gas valve terminals are tight and
thermopile and thermocouple are fully inserted into pilot bracket
•
Check switch wires to make sure they are not grounding
•
Check thermopile with millivolt meter. Take reading at
thermopile terminals of valve TP-TPTH. Should read 250
millivolts minimum while thermopile has pilot flame on it.
•
With the pilot ignited, turn valve knob to on. Take reading at TP-
TPTH with on/off switch in on position. Reading should be
100mv or greater. If reading is OK and pilot does not hold,
replace the gas valve.
Pilot burning, no gas
to burner.
Valve knob is on
Wall switch is on
Valve wire connections are
loose
Valve wires are defective
•
Check two way switch / wall switch for proper connections.
Jumper wire across terminals at wall switch. If burner comes on,
replace switch.
•
If okay, jumper wire at valve (TH-THTP). If unit turns on, replace
wires or check for loose connections.
Frequent pilot out-
age problems
Pilot flame may be too low or
blowing high causing the pilot
safety to drop out
Wall switch wires may be
grounding out.
Thermopile or thermocouple
may be grounding out.
Caution:
Any safety screen or guard removed for servicing an appliance must be replaced prior to
operating the appliance
•
Clean and adjust pilot for maximum flame impingement
on thermopile and thermocouple.
•
Trace wires from valve to wall switch for possible dam-
age or grounding against appliance or gas supply. Trace ther-
mopile wires from valve to thermopile for possible grounding
against the appliance or gas valve.
