COZY BFT202 and Installation And Operation Instructions Manual - Page 15

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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 use by a qualified installer or service technician)

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