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Troubleshooting - Mr. Heater MR HEATER MH4B Operation And Owner's Manual

Base camp heater

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TROUbLESHOOTING INFORMATION:
If Spark electrode does not produce spark.
CHECK
Spark electrode broken – replace.
Igniter wire may not be attached to spark
electrode.
Igniter wire damaged – replace.
Piezo igniter defective – replace regulator valve
assembly.
If Spark electrode produces spark but pilot does not light.
CHECK
No gas to heater – re-install or replace gas
cylinder.
Pilot is blocked from spider web or dirt – clean
pilot, see MAINTENANCE.
If Pilot flame does not stay lit when button is released.
CHECK
"Pilot/Ignition" button not held long enough
to purge air from line.
Pilot flame not surrounding thermocouple –
clean pilot, see MAINTENANCE.
Pilot Assembly defective – replace.
Tip switch wires disconnected – connect
tip switch (check off switch and off switch
wiring).
If Main burner does not ignite.
CHECK
Main burner orifice is blocked – clean burner,
see MAINTENANCE.
If Heater keeps shutting "OFF" during normal operation.
CHECK
Pilot is blocked – clean pilot, see
MAINTENANCE.
Provide minimum fresh air opening of 4 square
inches (example 2" x 2" opening).
Tip over switch activated from bumping heater.
Re-light
Mr. Heater MH4B | Base Camp MH4BC
—INTENTIONALLY LEFT bLANK —
5
Operating Instructions and Owner's Manual

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