Mr. Heater Official Manual for Water Heater Troubleshooting and Parts - MH9B Model

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calibrated ruby that controls the gas flow.

9Apply 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.

10Make sure the burner tile assembly is completely seated against the reflector.

11Carefully slide burner assembly back into casing assem- bly 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.

12Install 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

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

73424

COVER, REAR

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

11409

REGULATOR

14

73432

OWNER’S MANUAL

 

 

(Required when ordering parts.)

15

73416

CONTROL VALVE

17

73499

PILOT ODS / TIP SWITCH ASSEMBLY

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

26

73422

REGULATOR HOLD DOWN

 

 

 

ACCESSORIES:

ITEM # DESCRIPTION

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

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

F272702 12 ft. PROPANE HOSE ASSEMBLY (Swivel 1”-20Male Throwaway Cyl. Thd. X P.O.L. w/Handwheel)

F273699 Fuel Filter (Replace Annually)

Mr. Heater Portable Buddy

6

Operating Instructions and Owner’s Manual

Image 6
Contents MH9B Contents SpecificationsGeneral Safety Instructions General InformationMr. Heater Portable Buddy Maintenance Accessories Item # Description Troubleshooting InformationParts List Item # DescriptionMr. Heater Portable Buddy Model # MH9B For Information Regarding Service Limited Warranty
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MH9B specifications

The Mr. Heater MH9B is a portable propane heater designed for versatility and efficiency, making it an ideal choice for various outdoor activities and indoor use in well-ventilated areas. With a compact design and powerful heating capabilities, this unit has gained popularity among campers, tailgaters, and those seeking supplemental heat in emergencies.

One of the standout features of the MH9B is its radiant heating technology. The heater emits infrared heat that warms objects and people directly within its vicinity rather than simply heating the air. This leads to efficient energy use and provides warmth almost instantly. The unit is capable of producing up to 9,000 BTUs, making it suitable for spaces up to 200 square feet. Its adjustable heat settings allow users to customize their comfort level, offering a range from 4,000 to 9,000 BTUs per hour.

Safety is a primary consideration in the design of the MH9B. It includes an automatic shut-off feature that activates if the heater tips over, ensuring that users can operate it with peace of mind. Additionally, the unit is equipped with a low-oxygen shut-off system that automatically shuts down the heater when carbon monoxide levels become dangerous, making it a safe option for indoor use in well-ventilated spaces.

The MH9B operates on standard 1 lb propane cylinders, providing a straightforward and practical fuel option. Users can also connect it to larger propane tanks with the right adapter, enhancing its usability for extended outdoor trips. The heater is lightweight, weighing only about 9 pounds, and comes with a built-in handle for easy portability, allowing users to transport it effortlessly from one location to another.

Another notable aspect of the Mr. Heater MH9B is its sturdy construction. The body is made of durable metal, ensuring longevity and the ability to withstand the rigors of outdoor use. The heater's easy-to-use control knobs are designed for quick adjustments, even when wearing gloves, making it user-friendly in various conditions.

In summary, the Mr. Heater MH9B combines innovative heating technology, safety features, portability, and durable construction, establishing itself as a reliable heating solution for both indoor and outdoor applications. Whether enjoying a camping trip or needing emergency warmth, this heater offers the comfort and efficiency to meet diverse needs.