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11. TROUBLE SHOOTING
Problem Possible Cause Solution
Spark will not arc to the pilot after
repeated pressing of spark ignitor
Defective piezo ignitor Check connections to ignitor
-If ignitor connections are good but there is no
spark-replace ignitor
Broken spark electrode -Check for broken ceramic insulation
replace, electrode if broken
Miss-aligned spark electrode -If spark is not arcing from the electrode to pilot-
adjust by loosening screws on pilot base.
Adjust away from burner and re-tighten
Pilot will not remain lit Problem with thermocouple circuit -Check for proper connection of thermocouple
to rear of valve. If loose, tighten lightly
-Check pilot for full flame impingement around
thermocouple. If the pilot is to small - Check
gas pressure, adjust pilot rate screw, check pilot
head for blockage.
-Check thermocouple voltage at rear of valve-
must be greater than 5 mV. If low , replace
thermocouple.
Air in gas line - (Pilot flame dies while
knob is depressed.)
-Bleed line.
-Check gas line pressure.
-Contact dealer.
Burners will not remain lit Problem with thermopile circuit -Check gasline pressure.
-Check for flame impingement on thermopile, if
low see “Pilot will not stay lit”
-Check thermopile for a Minimum of 300 mV
when burner switched on.
-Check wiring to thermostat for breaks.
BV only: - Check for spillage at draft hood that
may trip spill switch.
Flame lifting - Leak in vent pipe
- Improper vent configuration
- Terminal may be recirculating flue
gases
-check for leaks in vent connections
-check vent configuration with manual
-check to see if terminal is on correctly
-May need to install high wind termination cap
-contact dealer.
BV only: insufficient air for
combustion
- Air tight house
- A Vacuum in room due to other air
moving device
- supply make up air to the unit.
Glass fogs up Normal conditions - after the appliance warms up glass will clear
** Due to additives in gas, glass may get hazy during normal use**
Clean when needed.
Blue flames
Normal during start - flame will yellow as the appliance heats up.
Flames are burning “dirty” or Sooting Flame impingement -check log position
-increase primary air by opening venturi
shutters
see also “Burners will not stay lit”
14