Mr. Heater MH9BX Operating Instructions And Owner's Manual page 8

NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
SYMPTOM
• Spark electrode does not produce spark.
CAUSE
1. Spark electrode broken.
2. Igniter wire may not be attached to spark electrode,
ground wire may not be attached to frame.
3. Igniter wire damaged.
4. Piezo igniter is defective.
SYMPTOM
• Spark electrode produces spark but pilot does not light.
CAUSE
1. No gas to heater.
2. "PILOT" position not properly aligned.
3. Pilot is blocked with foreign debris.
SYMPTOM
• Pilot flame does not stay lit when knob is released.
CAUSE
1. Improper pilot lighting.
2. Pilot flame not surrounding thermocouple.
3. Pilot Assembly is defective.
4. Tip switch wires are disconnected.
SYMPTOM
• Main burner does not ignite.
CAUSE
1. Main burner orfice is blocked.
SYMPTOM
• Heater keeps shutting "OFF" during normal operation.
CAUSE
1. Pilot is blocked.
2. Inadequate fresh air opening.
3. Tip over switch activated from bumping heater.
4. Regulator defective.
5. Internal contamination.
• For additional assistance or information, please call Technical services.
Mr. Heater | Portable Buddy Radiant Heater
REMEDY
1. Replace ODS (Oxygen Depletion Sensor).
2. Attach igniter wire or ground wire.
3. Replace igniter wire.
4. Replace gas valve assembly.
REMEDY
1. Install disposable cylinder or connect hose and filter
where required and turn on valve at remote cylinder.
2. Turn gas control knob to "PILOT" position and depress.
3. Clean pilot. See MAINTENANCE section.
REMEDY
1. Make sure that the control knob is completely depressed
in the "PILOT" position and held long enough to purge air
from lines.
2. Clean pilot, see MAINTENANCE.
3. Replace Pilot Assembly.
4. Connect tip switch wires.
REMEDY
1. Clean burner - see Maintenance.
REMEDY
1. Clean pilot. See MAINTENANCE section.
2. Provide minimum fresh air opening of 9 square inches
(example 3" x 3" opening).
3. Re-light.
4. Replace regulator.
5. Replace control valve and regulator.
8
Operating Instructions and Owner's Manual