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Read this manual carefully before using this air-conditioner. If you still have any 
difficulties or problems, consult your dealer for help. 
The air-conditioner is designed to provide you with comfortable room conditions. Use 
this unit only for its intended purpose as described in this instruction manual.

WARNING

We recommend that this air-conditioner is installed properly by qualified installation technicians in accordance 
with the installation instructions provided with the unit. 
Before installation, check if the voltage of the power supply at installation site is the same as the voltage 
shown on the nameplate. 

You must not carry on any transformation to this product, otherwise, it may possibly 
cause such consequences as water leakage, the breakdown, the short-circuit,  
electric shock, fire, etc.
The work such as piping welding, etc. should be carried out far away from the 
flammable explosive material vessels, including the air-conditioner refrigerant, to 
guarantee the security of the site.
To protect the air-conditioner from heavy corrosion, avoid installing the outdoor unit 
where salty seawater can splash directly onto it or in sulphurous air near a spa. Do 
not install the air-conditioner where excessively high heat-generating objects are 
placed. 

CAUTION Statements

1

DANGER

If the supply cord is damaged, it must be replaced by the factory or its service department 
in case of danger.
The place where this product is installed must have the reliable electrical earth facility and 
protections. Please do not connect the grounding of this product to various kinds of air-
feeding ducts, drain piping,lightning protection facility as well as other piping lines to avoid 
receiving an electric shock and damages caused by other factors. 
Wiring must be done by a qualified electrician. All the wiring must comply with the local 
electrical codes. 
Consider the capacity of the electric current of your electrical meter and socket before 
installation. 
The power wire where this product is installed is supposed to have the independent 
leakage protective device and the electric current over-load protection device which are 
provided for this product.
This appliance  is not intended for use by persons who lack of experience and knowledge, 
unless they have been given supervision or instruction concerning use of the appliance by 
a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance. Means 
for disconnection, which can provide full disconnection in all poles, must be incorporated 
in the fixed wiring in accordance with the wiring rules .

Never use gasoline or other inflammable gas near the air-conditioner, which is very 
dangerous. 
When the air conditioner operation is abnormal, such as burnt smell,deformation, fire, 
smoke,etc., it is forbidden to continue using the air conditioner, the main power switch 
of the air conditioner must be cut off immediately and the agent must be contacted.

Do not turn the air-conditioner on and off from the power main switch. Use the 
ON/OFF operation button.
Do not stick anything into the air inlet and air outlet of both the indoor and outdoor 
units. This is dangerous because the fan is rotating at a high speed. 

WARNING

CAUTION

Summary of Contents for YAKN09BZNWEUH1

Page 1: ...0Hz T1 Cooling Only Model YAKN09BZNWEUH1 YAKN12BZNWEUH1 YEKN18BZNWEUH1 YEKN24BZNWEUH1 YEKN36BZNWEUH1 YEKN42BZMWEUH1 YGKN48BZMWEUH1 YGKN55BZMWEUH1 Model YAJN09BZNWETH1 YAJN12BZNWETH1 YEJN18BZNWETH1 YEJ...

Page 2: ...ditioner 2 Special Remarks 3 Troubleshooting 3 Diagram of Refrigerant Cycle Wiring 1 Refrigerant Flow Diagram 4 2 Electrical Wiring Diagram 4 Installation and Maintenance 1 Safety Notice 5 2 The Tools...

Page 3: ...not connect the grounding of this product to various kinds of air feeding ducts drain piping lightning protection facility as well as other piping lines to avoid receiving an electric shock and damag...

Page 4: ...lected The figures are based on the external views of the standard model Operation instruction will be further specified in remote controller s manual Please read it carefully before using this applia...

Page 5: ...er reducing heating performance When this happens a defrosting system of the air conditioner will operate At the same time the fan in the indoor unit stops or runs at a very low speed in some cases to...

Page 6: ...y valve Heat exchanger Liquid piping Heating cycle Cooling cycle INDOOR UNIT OUTDOOR UNIT Heat exchanger EEV Service valve Outdoor unit Outdoor unit Indoor unit Indoor unit Terminal Terminal Power sup...

Page 7: ...nces other than the specified refrigerant such as air Any presence of air or other foreign substance in the refrigerant circuit causes an abnormal pressure rise or rupture resulting in injury If any r...

Page 8: ...ter Hammer Churn drill Knife or wire stripper Tube expander Inner hexagon spanner Tape measure 3 1 The Initial Check When moving the unit during or after unpacking make sure to lift it by holding its...

Page 9: ...nit power supply wiring and transmission wiring must be kept at least 1 meter away from televisions and radio which prevents image interference and noise in those electrical appliances Noise may be ge...

Page 10: ...the thread locker on the suspension to prevent the nuts from loosening 1 During the installation please cover the unit with the plastic cloth to keep it clean 2 Make sure that the unit is installed le...

Page 11: ...The connection positions of the tube Fig 4 2 The pipe diameter The refrigerant gas pipe The refrigerant liquid pipe 2 As shown in Fig 4 3 screw up the nuts with 2 spanners Fig 4 3 Screw up the nut to...

Page 12: ...ould be insulated because condensation may form there and cause water leakage Drain piping passing indoors Drain sockets Referring the figure below insulate the drain socket and drain hose using the i...

Page 13: ...t The lid of the control box Fig 6 1 Remove the screws on the control box 11 Installation and Maintenance 6 Electrical Wiring When clamping the wiring use the included clamping material as shown in th...

Page 14: ...desired function code to rewrite the parameter values by pressing button and press button to confirm Press button to quit 1 2 3 4 5 V V V V V V V V M T M T M T If you still have any trouble please co...

Page 15: ...hat the wall and the supporting rack is strong enough to hold the weight of the appliance Release the set screws of the electric cover remove the electric cover if the valve cover is there either plea...

Page 16: ...e heat insulation effect Also be sure the condensed drain hose splits away from bundle and drips clear of the unit and the piping The two refrigerant tubes and electrical wire if local codes permit sh...

Page 17: ...e contact local technical service center of our company for further information Narrow pipe Hex wrench Wide pipe Service valve Bonnet of service valve Bonnet of narrow valve Bonnet of wide valve Indoo...

Page 18: ...ck Place the round crimp style terminals on the wires up to the covered part and secure in place When connecting the terminal block using a single core wire be sure to perform curing 3 When transmitti...

Page 19: ...nt possible harm to the environment or human health from uncontrolled waste disposal recycle it responsibly to promote the sustainable reuse of material resources To return your used device please use...

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