180-CL2118-SP v1.00
May 22, 2018
Page 51
Clarity CL2118 SP
TROUBLESHOOTING
Please check to make sure the instructions are followed exactly before attempting trouble shooting of the appliance.
TROUBLESHOOTING AND SERVICING OF GAS AND ELECTRICAL DEVICES OF THE APPLIANCE
SHOULD ONLY BE CONDUCTED BY A QUALIFIED SERVICE TECHNICIAN
.
PROBLEM
POSSIBLE CAUSE
ACTION
The main burner does not ignite
when called for.
The gas valve may not be on.
•
Check that the gas control knob is in the “ON” position.
Problem with gas valve.
•
Use a DC voltmeter to measure the voltage across the
TPTH and TP terminals. Main operator voltage: Open
circuit ≥ 325mV Closed circuit ≥ 100mV
•
If voltage is not present, check the control circuit for proper
operation.
•
If proper control system voltage is present, replace the gas
control.
Spark will not light the pilot after
repeatedly pressing the spark
ignitor.
Defective piezo ignitor.
•
Check connections to ignitor.
•
If ignitor connections are good but no spark, replace
ignitor.
Broken spark electrode.
•
Check for broken ceramic insulation, replace electrode if
broken.
Misaligned spark electrode.
•
If spark is not arcing from electrode to pilot, loosen the
screws on the pilot base adjust and tighten.
Pilot will not remain lit.
Problem with thermocouple
circuit.
•
Check for proper connection of the thermocouple to the
rear of the valve. If loose, fully tighten.
•
Check pilot for full fl ame impingement around
thermocouple. If fl ame is too small, check gas pressure,
adjust pilot rate screw, check pilot head for damage.
•
Check thermocouple voltage at valve. It must be greater
than 5 mV. If low, replace thermocouple.
Air in gas line (pilot dies while
knob is depressed).
•
Bleed line.
•
Check gas line pressure.
•
Contact dealer
Burners will not remain lit.
Problem with thermopile
circuit.
•
Check gas line pressure.
•
Check for fl ame impingement on thermopile. If low, see
“Pilot will not remain lit”.
•
Check thermopile for minimum of 300 mV when burner is
switched on.
•
Check wiring to thermostat for breaks.
Flame lifting
Leak in vent pipe
•
Check for leaks in vent connections.
Improper vent confi guration
•
Check vent confi guration with manual.
Terminal may be recirculating
fl ue gases
•
Check to see if terminal is on correctly.
•
May need to install high wind termination cap.
•
Contact dealer.
Glass fogs up
Normal Condition: after the appliance warms up the glass will clear.
**Due to additives in gas, glass may get hazy during operation** Clean as needed.
Blue Flames
Normal during start up: fl ames will yellow as the fi replace heats up.
Flames are burning “dirty” or
sooting
Flame impingement
•
Check log positioning.
•
Increase primary air by opening the venturi shutter and/or
by opening the vent restrictor. See also “Burners will not
remain lit.”
