Full Product Manual

Operating Instructions and Owner’s ManualMr. Heater MH4B
5
TROUBLESHOOTING INFORMATION:
If Spark electrode does not produce spark.
CHECK
• Sparkelectrodebroken–replace.
• Igniterwiremaynotbeattachedtospark
electrode.--attach
• Igniterwiredamaged–replace.
• Piezoigniterdefective–replacegas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
—INTENTIONALLY LEFT BLANK —