HearthStone Santa Fe 8761 Owner's Manual page 26

Symptom Possible Cause
3. Pilot burning, no A. Thermostat switch or
gas to main burner, wires defective.
valve knob in the
"ON" position,
thermostat and/or
on/off/t'stat switch
in the "ON"
position.
B. Thermopile may not be
generating sufficient voltage.
C. Plugged burner orifice.
A. Inconsistent, of
4. Pilot and burner
insufficient flame on
come on, but go
thermopile.
out after some
warm-up.
B. Insufficient gas pressure. B. Check line pressure to ensure that the correct inlet
5. Frequent pilot A. Pilot flame may be too
outage problem. low or blowing, (high),
causing the pilot safety to
drop out.
6. Glass fogs A. A normal result of gas
combustion.
7. Blue Flames A. A normal result during the
first 20 minutes.
Corrective Action
A. Check thermostat/wiring for proper connections.
Place jumper wire across terminals at thermostat. If
burner comes on, replace defective thermostat. If not
OK, place jumper across thermostat wires at gas valve.
If burner comes on, tighten connections, or replace
faulty wires.
B. Check thermopile output, using a milli-volt meter. If
the optional on/off kit has not been installed, take the
readings across generator terminals of the gas valve.
TPTH and TP). With the on/off kit, take the readings
across TH and Terminal block (which corresponds to #3
on the switch). Milli-volt reading should be greater than
325 mV. If not, replace the pilot assembly. If the meter
reading is OK, but the burner does not come on, replace
the gas valve.
C. Remove and check burner orifice, clean or replace.
Note: do not use any metal cleaning device, as this may
damage the orifice.
A. Adjust pilot flame size and assure that the flame is
aimed directly at the thermopile.
pressure is present for the type of gas being used. If
propane pressure is inconsistent, check for water
condensation at the regulator.
A. Clean and/or adjust the pilot flame for maximum
impingement on the thermopile and thermocouple.
A. After the heater has warmed up, the glass should
clear.
A. Flames should begin to turn more yellowish after 20
minutes of burning.
B. If the blue color stays; adjust the air shutter for a
proper burn.
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