Kaisai R ON-OFF series User manual

SPLIT WALL-MOUNTED TYPE
R ON-OFF SERIES

CONTENTS
1. Precaution .................................................................................................................................................... 1
1.1 Safety Precaution..........................................................................................................................1
1.2 Warning.........................................................................................................................................1
2. Function........................................................................................................................................................ 6
3. Dimension .................................................................................................................................................... 9
3.1 Indoor Units...................................................................................................................................9
3.2 Outdoor Units...............................................................................................................................11
4. Refrigerant Cycle Diagram ....................................................................................................................... 12
5. Wiring Diagram .......................................................................................................................................... 13
5.1 Indoor Units.................................................................................................................................13
5.2 Outdoor Units..............................................................................................................................15
6. Installation details...................................................................................................................................... 19
6.1 Wrench torque sheet for installation...........................................................................................19
6.2 Connecting the cables................................................................................................................19
6.3 Pipe length and the elevation .....................................................................................................20
6.4Air purging with vacuum pump....................................................................................................21
6.5 Pumping down (Re-installation)..................................................................................................22
6.6 Re-air purging (Re-installation)...................................................................................................23
6.7 Balance refrigerant of the 2-way, 3-way valves.......................................................................... 24
6.8 Evacuation ..................................................................................................................................25
6.9 Gas charging...............................................................................................................................26
7. Operation characteristics ......................................................................................................................... 27
8. Electronic function.................................................................................................................................... 28
8.1 Abbreviation ................................................................................................................................28
8.2 Display function...........................................................................................................................28
8.3 Main Protection...........................................................................................................................29
8.4 Operation Modes and Functions.................................................................................................30
9. Troubleshooting......................................................................................................................................... 42
9.1 Indoor unit error display..............................................................................................................42
9.2 Diagnosis and Solution...............................................................................................................43

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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, or an Authorized
service center.
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 fore 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.
Be caution when unpacking and installing the product.
Sharp edges could cause injury, be especially careful of the case edges and the fins on the

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condenser and evaporator.
For installation, always contact the dealer or an Authorized service center.
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 could 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.
Do not use the telephone or turn switches on or off.

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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 Authorized service
center.
There is risk of fire or electric shock.
Be 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 could 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.
Keep level even when installing the product.

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It can avoid vibration of water leakage.
Do not install the product where the noise or hot air from the outdoor unit could damage
the neighborhoods.
It may cause a problem for your neighbors.
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.
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

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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
The designs, and information in this book are subject to change without notice for product improvement.

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2. Function

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Maintain the room temperature in accordance
with the setting 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.
Turbo, high, med, low, breeze.
Prevent the water being frozen on evaporator by sensing
the evaporator pipe temperature in cooling mode
Room temperature sensor.
Pipe temperature sensor.
Indoor units
Operation by remote controller
Sensing by room temperature
Room temperature control
Anti-freezing control in cooling
Time Delay Safety control
Indoor fan speed control
Sleep mode auto control
Independent dehumidification
Air flow Direction control
Auto mode
Flexible wiring connection
Self-diag. function
Auto-restart function
Timer function

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It protects the valves and prevents water from dripping.
Outdoor units
Power relay control
Valve protection cover
Made from electrolytic zinc steel sheet and anti-rust coated components.
Low noise air flow system
Anti-rust cabinet

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3. Dimension
3.1 Indoor Units
Figure 1:
Figure 2:

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Figure 3:
Figure Models W D H
Figure 1 7k,9k 710 189 250
Figure 2 18k 930 198 275
Figure 3 21k,24k 1036 230 315

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3.2 Outdoor Units
Model W H D B C F
7k 685 430 260 460 276 57
9k 700 535 235 458 250 60
18k 760 590 285 530 290 63
21k(MOP-21H-QB6W) 820 330 595 523 340 50
21k,24k 845 695 335 560 335 73

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4. Refrigerant Cycle Diagram
For heat pump models:

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5. Wiring Diagram
5.1 Indoor Units
KSR1-07HRN1-QC2(A) KSR1-09HRN1-QC2(A) KSR1-18HRN1-QB8

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KSR1-21HRN1-QB8W KSR1-21CR-QB6W KSR1-21HR-QB6W KSR1-24HRN1-QB8W

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5.2 Outdoor Units
KOK1-07HN1-QC2 KOA1-09HN1-QC2

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KOE-18HN1-QB8

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KOF-21HN1-QB8W K0F2-21C-QB6W KOP-21H-QB6W

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KOF2-24HN1-QB8W