Master MH-600T-KFA User Manual

Model Number

DANGER

MH-600T-KFA

KEROSENE FORCED AIR

HEATER

User’s Manual &

Operating Instructions

CONSUMER: READ AND SAVE THESE INSTRUCTIONS

IMPORTANT: Read and understand all of the directions in this manual before assembling,

starting, or servicing the heater. Improper use of this heater can cause serious injury. Keep this manual for future reference. The requirements of local authorities having jurisdiction shall be followed.

GENERAL HAZARD WARNING: Be sure to comply with the instructions and warnings provided with this heater, or death,

serious bodily injury and property loss, damage from the hazards of fire, explosion, burn,asphyxiation, and carbon monoxide poisoning can result. Only persons who can follow and understand these instructions should use or service this heater. If you need heater information such as an instruction manual, labels, etcetera, contact the manufacturer.

Not for use in residential living areas or in non-adequately ventilated

enclosed spaces. For outdoor use. Indoor use permitted for: The

temporary heating of adequately ventilated buildings or structures under construction, alteration or repair.

Fax: 320-251-2922 • Web: www.masterindustrialproducts.com • Email: info@pinnacleclimate.com

1 Industrial Blvd #101, Sauk Rapids, MN 56379 USA • Toll Free (800) 779-3267

NEVER LEAVE HEATER UNATTENDED WHILE BURNING

WARNING

DANGER

CAUTION

DANGER

WARNING

OR WHILE CONNECTED TO A POWER SOURCE

Table of Contents

Safety Information ...................................................................... 2-3

Features ........................................................................................ 3

Unpacking...................................................................................... 4

Assembly .................................................................................... 4-6

Operation .................................................................................... 6-9

Maintenance ............................................................................. 9-11

Wiring Diagram ............................................................................ 11

Exploded View ............................................................................. 12

Parts List ..................................................................................... 13

Troubleshooting Guide ................................................................ 14

Warranty ...................................................................................... 15

FIRE, BURN, INHALATION AND EXPLOSION HAZARD. Keep com-

bustibles such as building materials, paper or cardboard a safe distance away from the heater as recommended by these instructions. Never use the heater in spaces which contain products such as gasoline, solvents, paint thinners, dust particles, volatile or airborne combustibles or any unknown chemicals. This is an unvented portable heater. It

uses air (Oxygen) from the area in which it is used. Adequate

combustion and ventilation air must be provided. Refer to “Ventilation” on page 7.

DO NOT OPERATE THIS HEATER

UNTIL YOU HAVE READ AND

THOROUGHLY UNDERSTAND THESE SAFETY AND OPERATING INSTRUCTIONS. Failure

to comply with the precautions and instructions provided with this heater can result in death, serious bodily injury, property loss or damage from the hazards of fire, soot production, explosions, burns, asphyxiation or carbon monoxide poisoning. Only persons who can read and understand these instructions should use or service this heater.

Safety Information

Indicates an imminently hazardous situation which, if not avoided, WILL result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, COULD result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, MAY result in minor or moderate injury.

This is a kerosene direct-red, forced air heater. Kerosene forced

air heaters are primarily intended for use for temporary heating

of buildings under construction, alteration or repair. Direct-red

means that all of the combustion products of the heater enter the

heated space. This appliance is rated at 98% combustion efciency,

but does produce small amounts of carbon monoxide. Carbon monoxide is toxic.

CARBON MONOXIDE POISONING MAY LEAD TO DEATH!

Humans can tolerate small amounts of carbon monoxide, and precautions should be taken to provide proper ventilation. Failure to provide proper ventilation according to this manual can result in death. Early signs of carbon monoxide poisoning resemble the

u. Symptoms of improper ventilation are: Symptoms of improper

ventilation / carbon monoxide poisoning are:

Headache • Dizziness • Nausea • Dry Mouth Sore Throat •

Burning of Nose and Eyes

For optimal performance of this heater, it is strongly suggested that K-1 kerosene be used. K-1 kerosene has been refined to virtually eliminate contaminants, such as sulfur, which can cause a rotten egg odor during the operation of the heater. However, #1 or #2 fuel oil (diesel fuel) may also be used if K-1 kerosene is not available. Be advised that these fuels do not burn as clean as K-1 kerosene, and care should be taken to provide more fresh air ventilation to accommodate any added contaminants that may be added to the heated space. Use of #1 or #2 fuel oil may result in more periodic maintenance.

CALIFORNIA RESIDENTS: This product contains

chemicals, including lead, known to the State of California to

cause birth defects or other reproductive harm. Wash hands after handling.

MASSACHUSETTS RESIDENTS: Massachusetts

state law prohibits the use of this heater in any building which is used in whole or in part for human habitation. Use of this heating device in Massachusetts requires local fire department

permit (M.G.L.C. 148, Section 10A).

NEW YORK CITY RESIDENTS: The New York City

Fire Code prohibits the storage, handling and use of kerosene

fueled heaters for space heating. Any person violating that

provision may be punished by a fine up to $10,000 and a term of imprisonment of up to 6 months.

- Use this heater only in well ventilated areas! Provide, at heater level, at least a three square foot (2,800 sq. cm) opening of outside air for every 100,000 BTU/hr of heater rating.

- People with breathing problems should consult a physician before using the heater.

- Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble flu-like symptoms such as headaches, dizziness, and/or nausea. If you have these symptoms, your heater may not be working properly.

- Get fresh air at once! Have the heater serviced. Some people

are more affected by carbon monoxide than others. These include pregnant women, those with heart or lung problems, anemia, or those under the influence of alcohol, or at high altitudes.

- NEVER use fuels such as gasoline, benzene, paint thinners,

crankcase drainings, or other oil compounds in this heater (RISK OF FIRE OR EXPLOSION).

2

Risk of indoor air pollution!

Risk of burns / fire / explosion!

NEVER LEAVE HEATER UNATTENDED WHILE BURNING

WARNING

Front

Handle

OR WHILE CONNECTED TO A POWER SOURCE

Safety Information (Continued)

- NEVER refill the heater’s fuel tank while heater is operating or still hot. This heater is EXTREMELY HOT while in operation.

- Keep all combustible materials away from this heater.

- NEVER block air inlet (rear) or air outlet (front) of heater.

- NEVER use duct work in front or at rear of heater.

- NEVER move or handle heater while still hot.

- NEVER transport heater with fuel in its tank.

- If equipped with a thermostat, the heater may start at any time.

- ALWAYS locate heater on a stable and level surface.

- ALWAYS keep children and animals away from heater.

- Bulk fuel storage should be a minimum of 25 ft. from heaters,

torches, portable generators, or other sources of ignition. All

fuel storage should be in accordance with federal, state, or local authorities having jurisdiction.

Features

- Never use this heater in living or sleeping areas.

- NEVER use this heater where flammable vapors may be present.

Risk of electric shock!

- Use only the electrical power (voltage and frequency) specified on the model plate of the heater. Use only a three- prong, grounded outlet and extension cord.

- ALWAYS install the heater so that it is not directly exposed to

water spray, rain, dripping water, or wind.

- ALWAYS unplug the heater when not in use.

Minimum Clearance From Combustibles

MH-600T-KFA

Top

Sides

Front

4 ft. (125 cm)

10 ft. (305 cm)

Front Handle

Shell

Lower Shell

Handle Frame

Rear Shell

Rear

Fan Guard

Fuel Ta nk

Control Panel

Power Cord

Figure 1. Features of Model MH-600T-KFA

3

NEVER LEAVE HEATER UNATTENDED WHILE BURNING

Front Handle

OR WHILE CONNECTED TO A POWER SOURCE

Unpacking

Remove the heater and all of the packaging materials from the shipping carton.

NOTE: Save the box and packaging materials for future storage.

Check the diagram on the following page to be sure that you have all of the parts required to assemble your heater. If you find that any parts are missing, call 800-779-3267 for assistance in receiving the missing components.

Assembly

Handle Frame

Cord Wrap

Screw (L)

Rear Handle

Fuel Tank Flange

Wheel Support Frame

Wheel (Pneumatic)

Flat Washer (L)

Cotter Pin

Nut

Flat Washer (S)

Bushing

Screw (S)

Axle

Fan Guard

Wheel Tube Valve

Figure 2. Assembly of Model MH-600T-KFA

4

Wheel support frame Yes

Handle

CAUTION

Wheels and Axle Yes

Wheel Caps No

Front and Rear Handle Yes

Handle Frame Yes

Cord Wraps Yes

Screws, Nuts, and Washers Yes

Cotter Pins and Bushings Yes

Screws (L) Screws (S)

NEVER LEAVE HEATER UNATTENDED WHILE BURNING

OR WHILE CONNECTED TO A POWER SOURCE

Assembly

Model MH-600T-KFA

Front Handle

Handle Frame

Flat Washers (S) Flat Washers (L)

Nuts

Wheels (Pneumatic)

TOOLS REQUIRED

• MEDIUM PHILLIPS SCREWDRIVER

• OPEN OR ADJUSTABLE WRENCH

• LONG NOSE PLIERS

ASSEMBLING WHEEL & HANDLE

1. Slide axle through wheel support frame. Install wheel bushings, flat washers (S) and wheel on axle.

NOTE: When installing wheels, tube valve should face out from support frame (Figure 2).

2. Place flat washers (L) and cotter pins on axle ends and bend cotter pins with long nose pliers to secure.

Cotter Pins

Cord Wraps

Figure 3. Component Identication

Bushings

Rear

WheelSupport Frame

Axle

4. Place heater on wheel support frame. Make sure air inlet end

(rear) of heater is over wheels. Align the holes on fuel tank

flange. Insert screws through handles (front and rear), fuel tank flange, and wheel support frame as shown in Figure 2 and attach nut finger tight after each screw is inserted.

5. After all screws are inserted, tighten nuts firmly.

Do not operate heater without support frame fully assembled.

5

NEVER LEAVE HEATER UNATTENDED WHILE BURNING

WARNING

CAUTION

OR WHILE CONNECTED TO A POWER SOURCE

Operation

KEROSENE (K-1)

For optimal performance of this heater, it is strongly suggested that K-1 kerosene be used. K-1 kerosene has been refined to virtually eliminate contaminants, such as sulfur, which can cause a rotten egg odor during the operation of the heater. However, #1 or #2 fuel oil (diesel fuel) may also be used if K-1 kerosene is not available. Be advised that these fuels do not burn as clean as K-1 kerosene, and care should be taken to provide more fresh air ventilation to accommodate any added contaminants that may be added to the heated space. Use of #1 or #2 fuel oil may result in more periodic maintenance. Using diesel fuel can cause excess soot production. DO NOT use any fuel that is not approved above.

NOTE: Kerosene should only be stored in a blue container that is clearly marked “Kerosene.” Never store kerosene in a red container. Red is associated with gasoline.

Electrical System Protection: This heater’s electrical system is protected by a fuse that protects it and other electrical components from

damage. Fuse is located inside of an in-line “FUSE BARREL”. If your

heater fails to operate, check this fuse first and replace as needed.

Flame-Out Sensor: Utilizes a photocell to monitor the flame in burn chamber during normal operation. It will cause the heater to shut off should the burner flame extinguish.

FUELING YOUR HEATER

IMPORTANT: REGARDING FIRST IGNITION OF HEATER. The first

time you light the heater, it should be done OUTDOORS. This allows

the oils, etc. used in manufacturing the heater to burn off outside. The initial burn must last at least 10 minutes.

VENTILATION

- NEVER store kerosene in the living space. Kerosene should be stored

in a well ventilated area outside the living area.

- NEVER use fuel such as, benzene, alcohol, white glass, camp stove

fuel, paint thinners, or other oil compounds in this heater. THESE ARE VOLATILE FUELS THAT CAN CAUSE A FIRE OR EXPLOSION.

- NEVER store kerosene in direct sunlight or near a source of heat.

- NEVER use kerosene that has been stored from one season to the

next. Kerosene deteriorates over time. OLD KEROSENE WILL NOT BURN PROPERLY IN THIS HEATER.

- Use K-1 kerosene in this heater. A suitable substitute is #1 fuel.

OVERVIEW OF HEATER DESIGN Fuel System: This heater is equipped with an electric magnet

pump that forces fuel through the fuel line connected to the fuel intake, and then through a nozzle in the burner head. This fuel is then sprayed into the combustion chamber in a fine mist.

“SureFire Ignition”: The electronic ignitor sends voltage to a specially designed spark plug. The spark plug ignites the fuel and air mixture.

The Air System: The heavy duty motor turns a fan that forces air into and around the combustion chamber. Here, the air is heated and then forced out the front of the heater.

THE SAFETY SYSTEM Temperature Limit Control: This heater is equipped with a

Temperature Limit Control designed to turn the heater off should the internal temperature rise to an unsafe level. If this device activates and turns your heater off, it may require service. Once the temperature falls below the reset temperature, you will be ale to start your heater.

THE HEATER IS ON LEVEL GROUND WHEN FUELING, AND NEVER OVERFILL THE FUEL TANK.

Provide a fresh air opening of at least 3 square feet. (2,800 sq. cm.) for each 100,000 BTU/Hr. rating. Provide extra fresh air if more heaters are being used.

TO START HEATER

1. Fill fuel tank with K-1 kerosene.

2. Attach fuel cap.

3. Plug power cord into three-prong, grounded extension cord,

Extension Cord Wire Size Requirements:

• 6 to 10 feet long, use 14 AWG conductor.

• 101 to 200 feet long, use 12 AWG conductor.

• 201 to 300 feet long, use 10 AWG conductor.

• 301 to 400 feet long, use 8 AWG conductor.

• 401 to 500 feet long, use 6 AWG conductor.

4. Push “OPERATION BUTTON” (see Figure 5). Power indicator

NEVER REFUEL THIS HEATER WHILE IT IS HOT OR OPERATING. FIRE OR EXPLOSION COULD RESULT.

NEVER FILL THE FUEL TANK INDOORS. ALWAYS FILL THE TANK OUTDOORS. BE SURE THAT

Risk of indoor air pollution. Use heater only in well ventilated areas.

and plug the extension cord into a three-prong 120V grounded outlet. The extension cord must be at least six feet long.

lamp and room temperature display will light and heater will start. Push the up and down arrow keys on the control panel to adjust the thermostat settings.

6

NEVER LEAVE HEATER UNATTENDED WHILE BURNING

CAUTION

WARNING

OR WHILE CONNECTED TO A POWER SOURCE

Operation (Continued)

Combustion Chamber

Room Temperature

Power Lamp

Fuel Tank

Operation Button

If heater does not start, the thermostat setting may be too low.

Push “TEMP CONTROL UP ARROW” to higher setting to start

heater. If heater still does not start, see Troubleshooting Guide on page 14.

NOTE: The major electrical components of this heater are protected by a circuit breaker (fuse) mounted to the power switch. If

your heater fails to start, check this rst and replace as necessary.

You should also check your power source to insure that proper voltage and frequency are being supplied to the heater.

TO STOP HEATER

Never unplug heater while heater is running.

Heater must go through cooling cycle. The cooling cycle cools the combustion chamber. Damage to heater can occur if combustion chamber is not cooled. Do not restart heater until cooling cycle is complete.

1. Push “OPERATION BUTTON” (see Figure 5). This will cause heater ame to go out. The motor will continue to run during the

cooling cycle. This allows the fan to cool the combustion cham-

ber. When the cooling cycle (approx. 2 minutes) is nished, the

motor will stop. Do not unplug heater until cooling cycle is

nished.

2. Disconnect heater from power source.

3. To temporarily stop heater, set thermostat at a temperature lower than air around heater. Heater will cycle back on if air temperature around heater matches thermostat setting.

Fan

Control Panel

Motor

Figure 4. Overview of Heater Design

Fuse Barrel

Model MH-600T-KFA

Internal Shut-

off Temp. +/-10

Fuse

TO RESTART HEATER

1. Wait until cooling cycle is nished after stopping heater.

2. Repeat steps under TO START HEATER.

Degrees

Reset Temp.

+/-10 Degrees

DO NOT restart heater until cooling

cycle is nished.

176°F / 80°C

149°F / 65°C

Temp Control Buttons

Operation

Button

Figure 5. Control Panel

7

NEVER LEAVE HEATER UNATTENDED WHILE BURNING

(Bottom-Front of Fuel Tank)

OR WHILE CONNECTED TO A POWER SOURCE

Operation (Continued)

LONG-TERM STORAGE OF HEATER

1. Remove drain nut from rear bottom side of fuel tank by un-

screwing nut and drain. See Figure 6.

2. Using a small amount of kerosene, swirl and rinse the inside of the tank.

NEVER MIX WATER WITH KEROSENE, as it will cause rust inside the tank. Pour the kerosene out, making sure that you remove it all.

IMPORTANT: Do not store kerosene over summer for use during next heating season. Using old fuel may damage heater.

3. Reinstall drain bolt as follows:

i. Insert bolt’s seal head fully into drain hole so that ange is

ush to tank’s bottom. See Figure 6.

ii. Insert seal cap fully into head hole so that cap ange is ush

to head ange. See Figure 6.

Drain Bolt

Figure 6. Drain Bolt Reinstall

Drain Nut

8

NEVER LEAVE HEATER UNATTENDED WHILE BURNING

Photocell

WARNING

OR WHILE CONNECTED TO A POWER SOURCE

Maintenance

Never service heater while it is plugged in or while hot!

NOTE: USE ORIGINAL EQUIPMENT REPLACEMENT PARTS.

Use of third-party or other alternate components will void warranty and may cause unsafe operating conditions.

FUEL TANK

- Flush every 200 hours of operation or as needed (See page 8).

AIR FILTERS:

The Air Intake Filter should be replaced or washed with soap and water and dried thoroughly every 500 hours of operation, or less, depending on conditions. The Output and Lint Filters should be replaced every 500 hours of operation or less, depending on conditions.

NOTE: Use of diesel may require additional maintenance.

FAN BLADES

CLEAN EVERY SEASON OR AS NEEDED.

1. Remove upper shell.

2. Use Allen wrench to loosen set screw which holds fan blade to

motor shaft.

3. Slip fan blade off motor shaft.

4. Clean fan blade using soft cloth moistened with kerosene or

solvent.

5. Dry fan blade thoroughly.

6. Reinstall fan blade to motor shaft.

7. Place fan hub ush with end of motor shaft.

8. Place set screw on at end of shaft.

9. Tighten screw rmly (40-50 inch pounds/ 4.5-5.6 N-m). Rein-

stall upper shell

Nozzle

Figure 7. Nozzle Replacement

13. Attach spark plug wire to spark plug

14. Attach fuel line to burner head and tighten rmly.

15. Replace upper shell.

16. Attach ignitor wire to spark plug.

17. Attach fuel and air line hoses to burner head.

18. Reinstall fan blade and upper shell.

Spark Plug

NOZZLE

Remove dirt in nozzle as needed.

1. Remove upper shell.

2. Remove fuel line B from burner assembly by using wrench.

3. Remove burner head from burner assembly.

4. Remove lead wire from spark plug.

5. Remove spark plug from burner head.

6. Carefully remove nozzle from burner head using socket

wrench.

7. Blow compressed air through face of nozzle (this will remove

any dirt).

8. Inspect nozzle for damage. If damaged or clogged, replace

nozzle.

9. Make sure plug is in place on burner head.

10. Reinstall nozzle into burner head and tighten rmly (175-200

inch-pounds).

11. Reinstall spark plug in burner head.

12. Attach burner head to combustion chamber.

SPARK PLUG

CLEAN AND REGAP EVERY 600 HOURS OF OPERATION OR REPLACE AS NEEDED.

1. Remove upper shell.

2. Remove spark plug wire from spark plug (See Figure 8).

3. Remove spark plug from burner head using medium Phillips screwdriver.

4. Clean and regap spark plug electrodes to 2.5 mm gap (0.1”).

5. Reinstall spark plug into burner head.

6. Attach spark plug wire to spark plug.

7. Reinstall upper shell.

9

Nozzle

Figure 8. Spark Plug Replacement

Figure 9. Photocell

Fuel

NEVER LEAVE HEATER UNATTENDED WHILE BURNING

OR WHILE CONNECTED TO A POWER SOURCE

Maintenance (Continued)

Burner Assembly

Fuel Filter

Fuel Cover

Photocell

Figure 10. Removing Fuel Filter

PHOTOCELL

CLEAN PHOTOCELL ANNUALLY OR AS NEEDED.

1. Remove upper shell.

2. Remove fan (See FAN BLADES, page 9).

3. Remove photocell from its mounting bracket (see Figure 9).

4. Clean photocell lens with cotton swab.

TO REPLACE:

1. Remove side cover near Operation switch.

2. Disconnect wires from Operation switch and remove photocell.

3. Disconnect wires from circuit board and remove side cover.

4. Install new photocell and attach wires to circuit board.

5. Replace switch wires to operation switch and side cover.

6. Replace fan and upper shell.

FUEL FILTER

CLEAN TWICE PER HEATING SEASON OR AS NEEDED.

1. Open rear shell.

2. Remove lter cover by unscrewing four screws (see Figure 10).

3. Remove fuel lter from fuel cover.

4. Wash fuel lter in clean kerosene.

5. Replace fuel lter and fuel cover.

Fuel lter A on fuel cap

1. Remove fuel cap (See Figure 11).

2. Take out fuel lter with clean kerosene.

3. Wash fuel lter with clean kerosene.

4. Replace fuel lter on fuel tank.

5. Replace fuel cap on fuel tank.

Fuel Cap

Gasket

Fuel Filter A

Figure 11. Fuel Filter A

PUMP PRESSURE ADJUSTMENT

1. Remove rear shell.

2. Remove fuel line A from fuel pump by using wrench.

3. Place pressure gauge at outlet of fuel pump.

4. Adjust pump pressure by turning pressure adjustment screw (see Figure 12 on page 11).

i. Turn screw clockwise to increase pressure. ii. Turn screw counterclockwise to decrease pressure.

5. Set pump pressure to 128 PSI by turning screwdriver (directions continued on following page).

Pump pressure gauge is not supplied.

10

NEVER LEAVE HEATER UNATTENDED WHILE BURNING

Pump

OR WHILE CONNECTED TO A POWER SOURCE

Maintenance (Continued)

PUMP PRESSURE ADJUSTMENT (Continued)

8. Stop heater (See OPERATION, page 7).

9. If accessory pressure gauge is being used, remove pressure gauge.

10. Replace fuel line, and plug in end of lter cover.

NOTE: Use only original equipment replacement parts. Use of alternate or third party components will void any warranty and may cause unsafe operating conditions.

NOTE: If heater does not ignite when heater is turned on, please

turn AIR VENT SCREW counter clockwise to release air, then turn OPERATION SWITCH back on.

Wiring Diagram

Adjusting

Screw

Figure 12. Pump Pressure Adjustment

11

NEVER LEAVE HEATER UNATTENDED WHILE BURNING

OR WHILE CONNECTED TO A POWER SOURCE

Exploded View

5

6

4

2

1

3

12

NEVER LEAVE HEATER UNATTENDED WHILE BURNING

OR WHILE CONNECTED TO A POWER SOURCE

Parts List

# Description MH-400T-KFA

1 PCB Assembly 70-027-0800

2 Fuel Cap Assembly 70-006-0200

3 Pneumatic Wheel 70-041-0110

4 Photocell 70-016-0150

5 Nozzle 70-015-0750

6 Fan Motor Assembly 70-021-0800

13

Problem Possible Cause Solution

Heater Ignites, but main PCB shuts off after a short period of time.

Lamp ickers and LED display

shows “E1”.

Heater will not operate or motor runs for a short time.

Lamp ickers and LED display

shows “E1”.

Fan does not operate when heater is plugged in and power switch is in the “ON” position. The lamp is

ickering or and LED display shows

“E1” or “E2”.

Lamp is ickering and LED display

shows “E3”.

Lamp is ickering and LED display

shows “E4”.

NEVER LEAVE HEATER UNATTENDED WHILE BURNING

OR WHILE CONNECTED TO A POWER SOURCE

Troubleshooting Guide

1. Incorrect pump pressure.

2. Dirty fuel lter.

3. Nozzle is dirty.

4. Photocell lens is dirty.

5. Photocell not installed properly..

6. Improper electrical connection between main PCB and photocell.

7. Photocell is defective

1. No kerosene in the fuel tank.

2. Incorrect pump pressure.

3. Corroded spark plug or incorrect plug gap.

4. Dirty fuel lter.

5. Dirty nozzle.

6. Moisture in fuel tank.

7. Improper electrical connection between transformer and circuit board.

8. Ignitor wire not connected to spark plug.

9. Defective ignitor.

1. Thermostat is set too low.

2. Broken electrical connection between main PCB and motor.

1. Thermostat switch has failed.

2. Short circuit

1. Sensor disconnected 1. Check limit control thermostat and/

1. Adjust pump pressure (see page 10).

2. Clean / replace fuel lter (see page 10).

3. Clean / replace Nozzle (see page 9).

4. Clean / replace photocell (see page 10).

5. Adjust photocell position (see page 10).

6. Check wiring connections (see wiring diagram on page 11).

7. Replace photocell (see page 9).

1. Fill tank with fresh kerosene.

2. Adjust pump pressure (see page 10).

3. Clean / replace spark plug (see page 9).

4. Clean / replace fuel lter (see page 10).

5. Clean / replace nozzle (see page 9).

6. Rinse fuel tank with clean, fresh kerosene (see page 8).

7. Inspect all electrical connections (see wiring diagram on page 11).

8. Re-attach ignitor wire to spark plug (see page 9).

9. Replace ignitor.

1. Rotate thermostat to a higher setting

2. Inspect all electrical connections (see wiring diagram on page 11).

1. Replace thermostat switch (see wiring diagram on page 11).

2. Inspect all electrical connections (see wiring diagram on page 11).

or check sensor connection

Lamp is ickering and LED display

shows “E5”.

Master MH-600T-KFA User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual