Coaire CIC-09M1Z User manual

MODEL : CIC-09M1Z CIH-09M1Z
CIC-12M1Z CIH-12M1Z
CIC-18M2Z CIH-18M2Z
CIC-24M2Z CIH-24M2Z
SERVICE MANUAL

Content
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Content
1Precaution......................................................................................................................... 1
1.1 Safety Precaution................................................................................................................................... 1
1.2 Warning .................................................................................................................................................. 1
2Function............................................................................................................................ 4
3Dimension......................................................................................................................... 5
4Specification..................................................................................................................... 7
5Refrigerant cycle diagram ............................................................................................. 10
6Operation limits.............................................................................................................. 11
7Wiring diagram ............................................................................................................... 12
8Installation details .......................................................................................................... 22
8.1 Wrench torque sheet for installation .................................................................................................... 22
8.2 Connecting the cables ......................................................................................................................... 22
8.3 Pipe length and the elevation .............................................................................................................. 22
8.4 Air purging of the piping and indoor unit .............................................................................................. 23
8.5 Pumping down (Re-installation)........................................................................................................... 25
8.6 Re-air purging (Re-installation)............................................................................................................ 26
8.7 Balance refrigerant of the 2-way, 3-way valves................................................................................... 27
8.8 Evacuation ........................................................................................................................................... 28
8.9 Gas charging........................................................................................................................................ 29
9Electronic function......................................................................................................... 30
9.1 Electronic control working environment............................................................................................... 30
9.2 Proper symbols and their meaning...................................................................................................... 30
9.3 Function ............................................................................................................................................... 31
9.4 Protection ............................................................................................................................................. 31
9.5 Fan only mode ..................................................................................................................................... 32
9.6 Cooling mode....................................................................................................................................... 32
9.7 Dehumidifying mode ............................................................................................................................ 33
9.8 Heating mode....................................................................................................................................... 33
9.9 Defrosting mode(available for heating mode) ..................................................................................... 34
9.10 Auto mode.......................................................................................................................................... 35
9.11 Force cooling function........................................................................................................................ 35
9.12 Sleep mode(Economic mode) ........................................................................................................... 36
9.13 Auto restart function ........................................................................................................................... 37
9.14 Turbo mode........................................................................................................................................ 37
9.15 Ionizer (air clean) function ................................................................................................................. 37
9.16 Follow me function ............................................................................................................................. 37
10 Model and Parameters................................................................................................... 39
11 Troubleshooting ............................................................................................................. 41
11.1 Display board ..................................................................................................................................... 41
11.2 Troubleshooting.................................................................................................................................. 42
11.3 Diagnostic chart.................................................................................................................................. 43
11.4 Resetting phenomenon often occurs during operation...................................................................... 45

Content
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11.5 Indoor fan speed out of control . ........................................................................................................ 45
11.6 Temperature sensor error................................................................................................................... 46
11.7 Over current protection of the compressor occurs 4 times................................................................ 46
11.8 EEROM error...................................................................................................................................... 46
11.9 Outdoor unit protects.......................................................................................................................... 47
11.10 Indoor unit communication error. ..................................................................................................... 47
12 Characteristic of temperature sensor .......................................................................... 48

Service manual
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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 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
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.

Service manual
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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.
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.