Mr. Heater MH9B owner manual Troubleshooting Information, Parts List, Ref. #, Item #, Description

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.

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.

•Tip over switch activated from bumping heater. Re-light

PARTS LIST:

SEE BACK PAGE FOR PARTS ORDERING INFORMATION

REF. #	ITEM #	DESCRIPTION
1	73234	PIEZO IGNITER
2	73236	WIRE, IGNITER
3	73237	WIRE, GROUND
4	73405	COVER, RH PLASTIC
5	73418	KNOB, FUEL CONTROL
6	73423	COVER, FRONT
7	S73485	COVER, REAR WITH LABEL
8	73426	COVER, LH PLASTIC
9	73428	(2) BASE SUPPORT TUBES
10	73449P	GUARD, WIRE
11	73452	HANDLE TUBE
12	98959	SCREW, BURNER MT.
13	11410	REGULATOR
14	S73484	OWNER’S MANUAL
		(Required when ordering parts.)
15	73416	CONTROL VALVE
16	73404	PILOT ASSEMBLY
17	73403	TIP SWITCH
18	73413	ORIFICE, BURNER

19........... 71113 ........... O-RING, BURNER ORIFICE

20........... 73446 ........ COMPLETE BURNER ASSEMBLY (Includes assembled items 21- 25)

21........... 73458 ......... PLENUM, BURNER

22........... 73429 ......... (2) CLIP, BUNER TILE

23........... 73433 ......... GASKET, BURNER TILE

24	73439	BURNER TILE
25	73460	REFLECTOR, BURNER

ACCESSORIES:

ITEM # DESCRIPTION

F273701 5 ft. PROPANE HOSE ASSEMBLY (Swivel 1”-20 Male Throwaway Cyl. Thd. X P.O.L. w/ Handwheel)

F273702 12 ft. PROPANE HOSE ASSEMBLY (Swivel 1”-20 Male Throwaway Cyl. Thd. X P.O.L. w/ Handwheel)

F273699 Fuel Filter

Mr. Heater Portable Buddy 6 Operating Instructions and Owner’s Manual