Trouble Shooting Guide - COZY BFT101 Installation And Operation Instructions Manual

SYMPTOM
No spark at ODS
Spark but no ignition
at ODS
ODS will not remain
lit when control
knob is released
ODS lights but main
burner does not
Delayed ignition
Flashback
Heater shuts off during
normal operation

TROUBLE SHOOTING GUIDE

(for qualified serviceman)
POSSIBLE CAUSES
1. Ignitor wire off ODS or Piezo.
2. Ignitor wire shorting out on casing.
3. Defective piezo ignitor.
4. Wrong gap from electrode.
1. No gas to heater.
2. Air in gas line.
3. Blocked ODS orifice.
1. Safety interlock system activated.
2. Control knob not held in long
enough.
3. Control knob not in "PILOT"
position.
4. Thermocouple loose at gas valve.
5. Defective thermocouple.
6. Defective gas valve.
7. Air in line.
1. Control knob not in "ON" position.
2. Burner orifice blocked.
3. Gas supply pressure low.
4. Weak thermocouple.
5. Defective gas valve.
1. Low gas supply pressure.
2. Burner orifice blocked.
3. Low manifold pressure.
4. ODS not in correct location.
1. Improper orifice burner alignment.
2. Gas supply pressure low.
1. Blocked ODS.
2. Low gas supply presure.
3. Not an adequate supply of
combustion and ventilation air.
4. Heater located in drafty area.
CORRECTIVE ACTION
1. Check and re-attach ignitor wire.
2. Move ignitor wire.
3. Replace Piezo ignitor.
4. Set gap at 3/16".
1. Check and turn on gas.
2. Hold in pilot knob to bleed air from gas line.
3. Blow out ODS with low pressure air hose.
1. Wait five minutes between re-ignition
attempts.
2. Press in control knob, light ODS and hold
control knob in for one minute.
3. Turn control knob to "OFF" then without
pushing down turn knob counterclockwise
knob down completely at this point.
4. Tighten thermocouple into gas valve.
5. Replace thermocouple (hand tighten plus
1/4 turn with wrrench).
6. Replace gas valve.
7. Bleed all air from gas line.
1. Turn control knob to "ON".
2. Clean burner orifice with low pressure
air hose.
3. Check supply pressure. Call gas supplier.
4. Replace ODS.
5. Replace gas valve.
1. Check supply pressure. Call gas supplier.
2. Clean burner orifice with low pressure
air hose.
3. Check and replace regulator if necessary.
4. Make sure ODS is properly mounted to
burner bracket.
1. Correct alignment.
2. Check supply pressure. Call gas supplier.
1. Clean ODS. See maintenance section.
2. Check supply pressure. Call gas supplier.
3. See "Provisions for adequate combustion
and ventilation air" on Page 4 of
instructions.
4. Re-locate heater.
Page 15
until knob stops turning. Push