Troubleshooting; Parts List - Mr. Heater Portable Buddy MH9B Operating Instructions And Owner's Manual

8 Inspect and clean pilot (mounted to bracket) by using a
vacuum or apply air pressure through the holes in the
pilot indicated by the arrows in Figure 2.
warning: Never use needles, wires, or similar cylin-
drical objects to clean the pilot to avoid damaging the
calibrated ruby that controls the gas flow.
9 Apply air pressure (max. 30 psi.) into ceramic tile of
burner assembly and the venturi tube (with cone on
end, ref. item #21) to remove dust, lint or spider webs.
10 Make sure the burner tile assembly is completely seated
against the reflector.
1 1 Carefully slide burner assembly back into casing as-
sembly making sure to center reflector flange with the
casing opening and hold in place while installing burner
assembly screw in the bottom of the heater.
12 Install wire guard by gently bending and inserting into
the (4) holes in the front cover.
trOuBlesHOOting inFOrMatiOn:
If Spark electrode does not produce spark.
CHECK
• Spark electrode broken – replace.
• Igniter wire may not be attached to spark
electrode, ground wire may not be attached to
frame - attach.
• Igniter wire damaged – replace.
• Piezo igniter defective – replace.
If Spark electrode produces spark but pilot does not light.
CHECK
• No gas to heater – install disposable cylinder or
connect hose and turn on valve at remote cylinder.
• "PILOT" position not properly aligned – turn gas
control knob to "PILOT" position and depress.
• Pilot is blocked from spider web or dirt – clean
pilot, see MAINTENANCE.
If Pilot flame does not stay lit when knob is released.
CHECK
• Control knob in "PILOT" position not completely
depressed or held in long enough to purge air from
lines.
• Pilot flame not surrounding thermocouple – clean
pilot, see MAINTENANCE.
• Pilot Assembly defective – replace.
•
Tip switch wires disconnected – connect.
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 9 square
inches (example 3" x 3" opening).
• Tip over switch activated from bumping heater. Re-
light
6
Mr. Heater | Portable Buddy
accessOries:
iteM # descriptiOn
F273701 5 ft. PROPANE HOSE ASSEMBLY (Swivel
1"-20 Male Throwaway Cyl. Thd. X P.O.L. w/
Handwheel) (Recommended use with fuel filter.)
F273702 12 ft. PROPANE HOSE ASSEMBLY
(Swivel 1"-20 Male Throwaway Cyl. Thd. X P.O.L. w/
Handwheel) (Recommended use with fuel filter.)
F272702 12 ft. PROPANE HOSE ASSEMBLY
(Swivel 1"-20 Male Throwaway Cyl. Thd. X P.O.L.
Handwheel) (Recommended use with fuel filter.)
F273699 Fuel Filter
(Replace Annually)
F273704 10 ft. BUDDY-SERIES HOSE ASSEMBLY
(Fuel filter not required)
Operating Instructions and Owner's Manual