Heat Controller VMH09SC-1 Manuale utente

Heat Controller, Inc. • 1900 Wellworth Ave. • Jackson, MI 49203 • (517)787-2100 • www.heatcontroller.com

SERVICE MANUAL

Inverter Single Zone

Ductless Mini Split Heat Pump

VMH Series Version C

VMH09SC-1

VMH12SC-1

VMH18SC-1

VMH24SC-1

Service Manual VMH SerieS Heat Controller, Inc.

CONTENTS

1.Safety Precautions ............................................................................................................................. 3

2. Functions ........................................................................................................................................... 8

3. Dimensions ...................................................................................................................................... 10

3.1 Indoor Unit.............................................................................................................................. 10

3.2 Outdoor Unit ........................................................................................................................... 11

4. Refrigerant Cycle Diagram ............................................................................................................. 12

5. Wiring Diagrams.............................................................................................................................. 13

5.1 Indoor Unit.............................................................................................................................. 13

5.2 Outdoor Unit ........................................................................................................................... 14

6. Installation Details........................................................................................................................... 15

6.1 Power Wiring .......................................................................................................................... 15

6.2 Pipe length and elevation....................................................................................................... 16

6.3 Pressure test and evacuation................................................................................................. 17

7. Operation characteristics ............................................................................................................... 18

8. Electronic functions........................................................................................................................ 19

8.1 Abbreviation............................................................................................................................ 19

8.2 Display function ...................................................................................................................... 19

8.3 Main Protection ...................................................................................................................... 20

8.4 Operation Modes and Functions ............................................................................................ 21

9. Troubleshooting .............................................................................................................................. 35

9.1 Indoor Unit Error Display ........................................................................................................ 36

9.2 Diagnosis and Solution........................................................................................................... 36

Heat Controller, Inc. VMH SerieS Service Manual

1. Precaution

1.1 Safety Precaution

To prevent injury to the user or other people and property damage, the following

instructions must be followed.

Incorrect operation due to ignoring instruction will cause harm or damage.

Before service unit, be sure to read this service manual at first.

1.2 Warning

Installation

Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated

circuit.

There is risk of fire or electric shock.

For electrical work, contact the dealer, seller, a qualified electrician.

Do not disassemble or repair the product, there is risk of fire or electric shock.

Always ground the product.

There is risk of fire or electric shock.

Install the panel and the cover of control box securely.

There is risk of fire of electric shock.

Always install a dedicated circuit and breaker.

Improper wiring or installation may cause fIre or electric shock.

Use the correctly rated breaker of fuse.

There is risk of fire or electric shock.

Do not modify or extend the power cable.

There is risk of fire or electric shock.

Do not install, remove, or reinstall the unit by yourself(customer).

There is risk of fire, electric shock, explosion, or injury.

Use caution when unpacking and installing the product.

Service Manual VMH SerieS Heat Controller, Inc.

Sharp edges could cause injury, be especially careful of the case edges and the fins on the

condenser and evaporator.

For installation, always contact the dealer.

There is risk of fire, electric shock, explosion, or injury.

Do not install the product on a defective installation stand.

It may cause injury, accident, or damage to the product.

Be sure the installation area does not deteriorate with age.

If the base collapses, the air conditioner could fall with it, causing property damage, product failure,

and personal injury.

Do not let the air conditioner run for a long time when the humidity is very high and a

door or a window is left open.

Moisture may condense and wet or damage furniture.

Take care to ensure that power cable can not be pulled out or damaged during operation.

There is risk of fire or electric shock.

Do not place anything on the power cable.

There is risk of fire or electric shock.

Do not plug or unplug the power supply plug during operation.

There is risk of fire or electric shock.

Do not touch (operation) the product with wet hands.

There is risk of fire or electric shock.

Do not place a heater or other appliance near the power cable.

There is risk of fire and electric shock.

Do not allow water to run into electric parts.

It may cause fire, failure of the product, or electric shock.

Do not store or use flammable gas or combustible near the product.

There is risk of fire or failure of product.

Do not use the product in a tightly closed space for a long time.

Oxygen deficiency could occur.

When flammable gas leaks, turn off the gas and open a window for ventilation before

turn the product on.

Heat Controller, Inc. VMH SerieS Service Manual

Do not use the telephone or turn switches on or off.

There is risk of explosion or fire.

If strange sounds, or small or smoke comes from product. Turn the breaker off or

disconnect the power supply cable.

There is risk of electric shock or fire.

Stop operation and close the window in storm or hurricane. If possible, remove the

product from the window before the hurricane arrives.

There is risk of property damage, failure of product, or electric shock.

Do not open the inlet grill of the product during operation. (Do not touch the electrostatic

filter, if the unit is so equipped.)

There is risk of physical injury, electric shock, or product failure.

When the product is soaked (flooded or submerged), contact an your dealer.

There is risk of fire or electric shock.

Use caution that water could not enter the product.

There is risk of fire, electric shock, or product damage.

Ventilate the product from time to time when operating it together with a stove, etc.

There is risk of fire or electric shock.

Turn the main power off when cleaning or maintaining the product.

There is risk of electric shock.

When the product is not be used for a long time, disconnect the power supply plug or

turn off the breaker.

There is risk of product damage or failure, or unintended operation.

Take care to ensure that nobody can step on or fall onto the outdoor unit.

This could result in personal injury and product damage.

CAUTION

Always check for gas (refrigerant) leakage after installation or repair of product.

Low refrigerant levels may cause failure of product.

Install the drain hose to ensure that water is drained away properly.

A bad connection may cause water leakage.

Service Manual VMH SerieS Heat Controller, Inc.

Keep level even when installing the product.

To avoid vibration of water leakage.

Use two or more people to lift and transport the product.

Avoid personal injury.

Do not install the product where it will be exposed to sea wind (salt spray) directly.

It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins,

could cause product malfunction or inefficient operation.

Operational

Do not expose the skin directly to cool air for long periods of time. (Do not sit in the

draft).

This could harm to your health.

Do not use the product for special purposes, such as preserving foods, works of art, etc.

It is a consumer air conditioner, not a precision refrigerant system.

There is risk of damage or loss of property.

Do not block the inlet or outlet of air flow.

It may cause product failure.

Use a soft cloth to clean. Do not use harsh detergents, solvents, etc.

There is risk of fire, electric shock, or damage to the plastic parts of the product.

Do not touch the metal parts of the product when removing the air filter. They are very

sharp.

There is risk of personal injury.

Do not step on or put anything on the product. (outdoor units)

There is risk of personal injury and failure of product.

Always insert the filter securely. Clean the filter every two weeks or more often if

necessary.

Heat Controller, Inc. VMH SerieS Service Manual

A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or

damage.

Do not insert hands or other object through air inlet or outlet while the product is

operated.

There are sharp and moving parts that could cause personal injury.

Do not drink the water drained from the product.

It is not sanitary could cause serious health issues.

Use a firm stool or ladder when cleaning or maintaining the product.

Be careful and avoid personal injury.

Replace the all batteries in the remote control with new ones of the same type. Do not

mix old and mew batteries or different types of batteries.

There is risk of fire or explosion.

Do not recharge or disassemble the batteries. Do not dispose of batteries in a fire.

They may burn of explode.

If the liquid from the batteries gets onto your skin or clothes, wash it well with clean

water. Do not use the remote of the batteries have leaked.

The chemical in batteries could cause burns or other health hazards

Service Manual VMH SerieS Heat Controller, Inc.

2. Function

When the power supply is

interrupted and then restored, the

unit automatically restarts at the

previous function setting.

Maintains the room temperature according

to the set temperature

The mode can be change by the room temperature

The louver can be set at the desired position or

swing up and down automatically

The function is usually used in rainy

days in springtime or damp areas

The fan is turned to low speed in both

cooling and heating

The unit will decide the louver direction according

to operation mode

Turbo, high, med, low, breeze

Restart is for approx. 3 minutes

Prevents condensate from freezing on evaporator

by sensing the evaporator pipe temperature

in cooling mode

Room temperature sensor

Pipe temperature sensor

Indoor unit

Operation by remote controller

Sensing room temperature

Room temperature control

Anti-freeze protection in cooling

Time Delay Safety control

Indoor fan speed control

Two-direction air vane

Sleep mode auto control

Independent dehumidification

Air flow Direction control

Auto mode

Temp. Compensation

Auto defrost

Anti-cold function

Self-diag. function

Auto-restart function

Timer function

Ionizer

Prevent the cold wind at the

beginning of unit start.

Self clean

Indoor golden fin

Follow me

Ionizer

Indoor golden n

Heat Controller, Inc. VMH SerieS Service Manual

Protects the valves and prevents water from dripping.

3 minute time delay between ON/OFF operation.

Outdoor unit

Compressor delay

Hydrophilic aluminum fin

Energized in the heating mode except

when in defrost.

Anti-rust cabinet

Valve protection cover

4 way valve control

Made from electrolytic zinc steel and

anti-rust coated components.

Low noise air flow system

Bird tail propeller fan makes the outdoor unit run more

quietly.

Discharge pipe temperature protection

Operates down to 5°F(15°C)

Crankcase heater chassis heater for some full DC

inverter outdoor units

Service Manual VMH SerieS Heat Controller, Inc.

3. Dimension

3.1 Indoor Unit

Model

Dimension (mm)

W H D

B-VMH09SC

B-VMH12SC

845

(33.3in)

286

(11.3in)

165

(6.5in)

B-VMH18SC

B-VMH24SC

1080

(42.5in)

320

(12.6in)

200

(7.9in)

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