Hearth and Home Technologies ST-HVB-CE, RCOR-HVB-CE, PIER-HVB-CE, LCOR-HVB-CE manual 5Troubleshooting

5Troubleshooting

With proper installation, operation, and maintenance the gas fireplace will provide years of trouble-free service. If you do experience a problem, this trouble shooting guide will assist a qualified service person in the diagnosis of a problem and the corrective action to be taken. This troubleshooting guide can only be used by a qualified service technician.

Symptom	Possible Cause	Corrective Action
1. After repeated	a. Defective ignitor.	Check the spark at the electrode and pilot. If no spark and electrode wire is
triggering of the red		properly connected, replace the ignitor.
piezo button, the
	b. Defective pilot or	Using match, light the pilot. If the pilot lights, turn off the pilot and trigger the red or
spark ignitor will not
	misaligned electrode	black piezo button again. If the pilot lights, an improper gas/air mixture caused the
light the pilot.
	(spark at electrode).	bad lighting and a longer purge period is recommended. If the pilot will not light,
		ensure the the gap at the electrode and pilot is 0.3 cm to have a strong spark. If
		the gap is OK, replace the pilot.
	c. No gas or low gas	Check the remote shut-off valves from the fireplace. Usually, there is a valve near
	pressure.	the gas main. There can be more than one (1) valve between the fireplace and the
		main.
	d. No LP in tank.	Check the LP (propane) tank. You may be out of fuel.
2. The pilot will not	a. Defective	Check that the pilot flame impinges on the thermocouple. Clean and/or adjust the
stay lit after carefully	thermocouple.	pilot for maximum flame impingement.
following the lighting
instructions.		Ensure that the thermocouple connection at the gas valve is fully inserted an tight
		(hand tighten plus 1/4 turn).
		Disconnect the thermocouple from the valve, place one millivolt meter lead wire on
		the tip of the thermcouple and the other meter lead wire on the thermocouple
		copper lead. Start the pilot and hold the valve knob in. If the millivolt reading is less
		than 15mV, replace the thermocouple.
	b. Defective valve.	If the thermocouple is producing more than 15 millivolts, replace faulty valve.
3. The pilot is	a. ON/OFF switch or	Check the ON/OFF switch and wires for proper connections. Place the jumper
burning, there is no	wires defective.	wires across the terminals at the switch. If the burner comes on, replace the
gas burner, the valve		defective switch. If the switch is OK, place the jumper wires across the switch wires
knob is in the ON		at the gas valve. If the burner comes on, the wires are faulty or connections are
position, and the		bad.
ON/OFF switch is in
	b. Thermopile may	If the pilot flame is not close enough physically to the thermopile, adjust the pilot
the ON position.
	not be generating	flame.
	sufficient millivoltage.	Be sure the wire connections from the thermopile at the gas valve terminals are
		tight and that the thermopile is fully inserted into the pilot bracket.
		Check the thermopile with a millvolt meter. Take the reading at TH-TP&TP
		terminals of the gas vlave. The meter should read 325 millivolts minimum, while
		holding the valve knob depressed in the pilot position, with the pilot lit, and the
		ON/OFF switch in the OFF position. Replace the faulty thermopile if the reading is
		below the specified minimum.
		With the pilot in the ON position, disconnect the thermopile leads from the valve.
		Take a reading at the thermopile leads. The reading should be 325 millivolts
		minimum. Replace the thermopile if the reading is below the minimum.
	c. Defective valve.	Turn the valve knob to the ON position. Place the ON/OFF switch in the ON
		position. Check the millivolt meter a the thermopile terminals. The millivolt meter
		should read greater than 125mV. If the reading is acceptable, and if the burner
		does not come on, replace the gas valve.
	d. Plugged burner	Check the burner orifice for stoppage. Remove stoppage.
	orifice.
	e. Wall switch or	Follow the corrective action in Symptom and Possible Cause 1.a above. Check
	wires are defective.	the switch and wiring. Replace where defective.

Heat & Glo • PIER/ST/L&RCOR-HVB-CE • 2068-900 Rev. H • 6/07 43