Monessen Hearth Direct Vent Gas Insert IDV490NVC - Manual (Page 38)

38 57D0016
TROUBLESHOOTING
OBSERVED PROBLEM
Piezo ignitor will not light the
pilot after repeated pressing of
piezo ignitor.
Pilot will not stay lit.
Burner will not light when valve
and burner switch are both on.
Glass fogs up
Blue flames
Sooting
POSSIBLE CAUSE
1. Defective ignitor
2. Misaligned spark electrode
1. Defective thermocouple.
Loose thermocouple
2. Air in gas line
3. No gas
1. Defective switch
2. Defective thermopile
3. Thermostat set too low/defective
1. Normal condition
1. Normal during start up
1. Flame impingement
REMEDY
1. Check connections to ignitor. Replace
ignitor if ignitor connections are good,
but there is no spark.
2. Check for spark arcing from the elec-
trode to pilot. Adjust and retighten.
1. Check for proper connection of thermo-
couple to rear of valve.
2. Bleed line. Contact dealer
3. Check shutoff valve and gas supply
(LPG tank)
1. Check switch connections. Jump wires
at switch.
2. Check connections to valve. Contact
dealer.
3. Turn up thermostat to start unit. Check
thermostat connections.
1. Allow appliance to warm up. Glass will
clear. Additives in the gas may dirty
glass. Clean glass when cool.
1. Flames will yellow as appliance
heats up.
1. Check log position. Open shutters to
increase primary air.
Note: All troubleshooting items are listed in order of operation.
W
ARNING
Turn appliance OFF and allow to cool
before servicing. Only a qualified
service person should service and
repair the heater.
W
ARNING