Chigo 38B User manual

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CHIGO
Service mannal
Room airconditioner
Split Wall-Mounted Type
NOTE:
Beforeservicingtheunit,pleasefirstreadtheservice
manual and then contact with your service center if
meetproblem

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Table of Contents
1、Summary ………………………………………………………………………………………………………………3
2、Model explaining …………………………………………………………………………………………………….4
3、Installation……………………………………………………………………………………………………………..4
4、Exploded view and part list………………………………………………………………………………………..8
5、Operation principle………………………………………………………………………………………………….8
6、Parameter………………………………………………………………………………………………………………9
7、Wiring diagrams……………………………………………………………………………………………………...13
8、PCB principle chart……………………………………………………………………………………………….....17
9、PCB function …………………………………………………………………………………......17
10、Troubleshooting………………………………………………………………………………....30

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1. Summary
1.1 indoor unit
Model38B model85
1.2 outdoor unit
9000BTU 12000～18000 BTU
22000BTU 24000～26000 BTU
model KFR-25GW/AGX1c(38B) KFR-35GW/AGX1c(38B) KFR-51GW/BGX1c(38B) CS-70H3A-T38AS
indoor unit 790×270×180 790×270×180 940×270×180 1080×335×245 Net
Dimension outdoor unit 700×225×500 795×255×510 795×255×510 870×310×700
model CS-25C3A-V85AY1 CS-35H3A-M85AH4 CS-51H3A-P85AH4A CS-61H3A-P85AE2
indoor unit 745×250×195 800×280×190 900×292×215 900×292×215 Net
Dimension outdoor unit 795×255×500 795×255×510 795×255×510 850×285×605
model KFR-70GW/X1c(S85A)
indoor unit 1080×335×245 Net
Dimension outdoor unit 870×310×700

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2、Model explaining
c
Improve an ordinal number
Divide the body outdoors box a body code
External appearance characteristic code
Separately the body indoor machine(or whole type) style code
Code of refrigerant type：no code - R22；C-R407c、A-R410a
Power type：1:115v/60Hz 2:220V/60Hz；3:220-240V/
50Hz；4:240V/50Hz；
Main function code: c-Cold breeze type;H-Hot pump type;A-Hot
pump the type take assistance electricity to heat;E-The electricity
heat
Capacity code: x1000W
Separately the body pit code inside the indoor machine(or whole
type)
Structure form code
Special craft code:Q-Deal with contact quickly;S-Soft start;d-
Outside tube in addition to frost
The weather type code(T1 type code abridge)
"C" CHIGO brand
Such as: CS-25C3A-V85AY1
T1 climate type,wall split type air conditioner, cooling capacity is 2500W，power is 220V～/50Hz/1PH，
refrigeration is R410A,the kernel of indoor unit is fresh 98，the pattern no. is 85，first time design, outdoor
unit is 1HP of 2003 year。
Indoor unit modle is：CS-25C3A-V85A，outdoor unit model is：CS-25C3A-Y1。
3. Attention of installation
3.1 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.
3.2 Warning
﹥Installation
■Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit.

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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 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 windows 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. 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.

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■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.
To 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 pr 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 operated.
There are sharp and moving parts that could cause personal injury.

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■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.
3.3 Installation details
■Wrench torque sheet for installation
Outside diameter Torque
mm inch Kg.m
φ6.35 1/4 1.8
φ9.52 3/8 4.2
φ12.7 1/2 5.5
φ15.88 5/8 6.6
φ19.05 3/4 6.6
■Connecting the cables
The power cord of connect should be selected according to the following specifications sheet.
Grade
Unit 7K 9K 12K 18K 24K 28K
mm2 1.0 1.0 1.5 2.5 2.5 2.5
■Pipe length and the elevation
Standard length Max. Max. Additional
Capacity Pipe size
(m) Elevation Elevation refrigerant
Btu/h GAS LIQUID B (m) A (m) (g/m)
9K-12K 3/8’’ (φ9.52) 1/4’’ (φ6.35) 3.5 5 10 30
18K-22K 1/2’’ (φ12.7) 1/4’’ (φ6.35) 4 10 15 30
24K-28K 5/8’’ (φ15.88) 3/8’’ (φ9.52) 5 15 20 65

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