Empire Comfort Systems pmn - Manual (Page 21)

Page 21 15627-4-0806
With proper installation and maintenance, your new Vented Fireplace Heater should provide years of trouble-free service. If you
do experience a problem, refer to Trouble Shooting Guide below. This guide will assist a qualified service person in the diagnosis
of problems and the corrective action to be taken.
1. Spark ignitor will not light pilot after repeated depressing
of piezo ignitor button.
a. Defective ignitor (no spark at electrode)
- Check for spark at electrode and pilot; if no spark and
electrode wire is properly connected, replace ignitor.
b. No gas or low gas pressure.
- Check remote shut off valves from fireplace. Usually there
is a valve near the main. There can be more than one (1)
valve between the heater and main.
- Low pressure can be caused by a variety of situations
such as a bent line, too narrow diameter of pipe, or low
line pressure. Consult with plumber of gas supplier.
c. No LP in tank.
- Check LP (propane) tank. Refill tank.
2. Pilot will not stay lit after carefully following lighting
instructions.
a. Defective thermopile.
- Check that pilot flame impinges on thermopile. Clean
and/or adjust pilot for maximum flame impingement.
- Ensure that the thermopile connection at the gas valve is
tight.
3. Pilot burning, no gas to burner, valve knob "ON", on/off
switch "ON."
a. "On/Off" switch, wall switch, or wires defective.
- Check "on/off" switch and wires for proper connections.
Place jumper wires across terminal at switch - if burner
comes on, replace defective switch. If OK, place jumper
wires across switch wires at gas valve-if burner comes on,
wires are faulty or connections are bad.
b. Thermopile may not be generating sufficient milli-
voltage.
- If the pilot flame is not close enough physically to the
thermopile, adjust the pilot flame.
- Be sure the wire connections from the thermopile at the
gas valve terminals are tight and the thermopile is fully
inserted into the pilot bracket.
- Check the thermopile with a millivolt meter. Take the
reading at TH-TP & TP terminals of the gas valve. The
meter should read 325 millivolts minimum, while holding
the valve knob depressed 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 valve knob to "ON." Place ON/OFF switch to
"ON." Check with millivolt meter at thermopile terminals.
Millivolt meter should read greater than 100 M.V. If the
reading is okay and the burner does not come, replace the
gas valve.
d. Plugged main burner orifice.
- Check main burner orifice for blockage, clean main burner
orifice.
4. Frequent pilot outage problem.
a. Pilot flame may be too high or too low, or blowing (high),
causing pilot safety to drop out.
- Clean and adjust flame for maximum flame impingement
on the thermopile. Follow lighting instructions carefully.
5. The pilot and main burner extinguish while in operation.
a. No LP (Propane) in tank..
- Check LP (Propane) tank. Refill fuel tank.
b. Bad thermopile.
- Replace if necessary.
c. Improper vent cap installation.
- Check for proper installation and freedom from debris or
blockage.
6. Glass soots.
a. Flame impingement on logs.
- Adjust the log set so that the flame does not excessively
impinge on it.
b. Improper air shutter adjustment.
- Adjust the air shutter.
7. Flame lifts off main burner.
a. Insufficient oxygen being supplied.
- Check to make sure vent cap is installed properly and free
of debris. Make sure that vent system joints are tight and
have no leaks.
- Check to make sure that no material has been placed at
the burner base.
TROUBLESHOOTING