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ENGLISH

16

OPERATION TIPS

The following events may occur during normal operation.

1.  Protection of the air conditioner.

 Compressor 

protection

 

  The compressor cannot restart for 3 minutes after it stops.

 

 

Anti-cold air (Cooling and heating models only)

 

  The unit is designed not to blow cold air on HEAT mode, when the indoor heat exchanger is in one of the  

 

following three situations and the set temperature has not been reached.

 

 

A)   When heating has just starting.

 

 

B)   Defrosting.

 

 

C)   Low temperature heating.

 

  The indoor or outdoor fan stop running when defrosting (Cooling and heating models only).

 

 

Defrosting (Cooling and heating models only)

 

  Frost may be generated on the outdoor unit during heat cycle when outdoor temperature is low and humidity 

 

 

is high resulting in lower heating ef

fi

 ciency of the air conditioner.

 

  During this condition air conditioner will stop heating operation and start defrosting automatically.

 

  The time to defrost may vary from 4 to 10 minutes according to the outdoor temperature and the amount of  

 

frost buildup on the outdoor unit.

2.  A white mist coming out from the indoor unit.

 

  A white mist may generate due to a large temperature difference between air inlet and air outlet on COOL  

 

mode in an indoor environment that has a high relative humidity.

 

  A white mist may generate due to moisture generated from defrosting process when the air conditioner  

 

restarts in HEAT mode operation after defrosting.

3.  Low noise of the air conditioner

.

 

  You may hear a low hissing sound when the compressor is running or has just stopped running.

 

 

This sound is the sound of the refrigerant 

fl

 owing or coming to a stop.

 

  You can also hear a low “squeak” sound when the compressor is running or has just stopped running. 

 

 

This is caused by heat expansion and cold contraction of the plastic parts in the unit when the temperature  

 is 

changing.

 

  A noise may be heard due to louver restoring to its original position when power is 

fi

 rst turned on.

4.  Dust is blown out from the indoor unit.

  This is a normal condition when the air conditioner has not been used for a long time or during 

fi

 rst use of the 

unit.

5.  A peculiar smell come out from the indoor unit.

 

This is caused by the indoor unit giving off smells permeated from building material, from furniture, or smoke.

6.  The air conditioner turns to FAN only mode from COOL or HEAT (For cooling and heating models only) 

mode.

 

When indoor temperature reaches the temperature setting on air conditioner, the compressor will stop automatically, 
and the air conditioner turns to FAN only mode. The compressor will start again when the indoor temperature rises 
on COOL mode or falls on HEAT mode (For cooling and heating models only) to the set point.

7.

  Dripping water may generate on the surface of the indoor unit when cooling in a high relatively humidity (relative 

humidity higher than 80%). Adjust the horizontal louver to the maximum air outlet position and select HIGH fan 
speed.

8.  Heating mode (For cooling and heating models only)

 

The air conditioner draws in heat from the outdoor unit and releases it via the indoor unit during heating operation. 
When the outdoor temperature falls, heat drawn in by the air conditioner decreases accordingly. At the same time, 
heat loading of the air conditioner increases due to larger difference between indoor and outdoor temperature. If a 
comfortable temperature cannot be achieved by the air conditioner, we suggest you use a supplementary heating 
device.

9. Auto-restart function

 

Power failure during operation will stop the unit completely.

 

For the unit without Auto-restart feature, when the power restores, the OPERATION indicator on the indoor unit 
starts 

fl

 ashing. To restart the operation, push the ON/OFF button on the remote controller. For the unit with Auto-

restart feature, when the power restores, the unit restarts automatically with all the previous settings preserved 
by the memory function.

10. Lightning or a car wireless telephone operating nearby may cause the unit to malfunction.

 

Disconnect the unit with power and then re-connect the unit with power again. Push the ON/OFF button on the 
remote controller to restart operation.

J287-EN.indd   16

J287-EN.indd   16

07.03.2006   9:30:19 Uhr

07.03.2006   9:30:19 Uhr

Summary of Contents for RMHC 18

Page 1: ...al MODELS RMHC 18 30 MINISPLIT HIGH WALL AIR CONDITIONER EN 035M80159 000 The units comply with one or more of the following marks see unit for details J287 EN indd 1 J287 EN indd 1 07 03 2006 9 30 07 Uhr 07 03 2006 9 30 07 Uhr ...

Page 2: ...h superior qual ity service culture and distinctive technology R410A Outdoor RMJCxxFA GAA Indoor RMKCxxFA JAR Safety Precautions 3 Part Names 4 Manual Operation 5 How the Air Conditioner Works 5 Optimal Operation 6 Preparation Before Installation 6 Installation Procedure 9 Maintenance 15 Operation Tips 16 Trouble Shooting Guide 17 Technical Specification 18 Declaration of Conformity 19 J287 EN ind...

Page 3: ...rous and can cause injury Installation and maintenance of this air conditioning system should only be carried out by trained and qualified personnel After unpacking please check the unit carefully for possible damage Before undertaking any work on the unit make sure that the power supply has been disconnected WARNING CAUTIONS Do not store or unpack the unit in a wet area or expose to rain or water...

Page 4: ...TEMPERATURE indicator Displays the temperature settings when the air conditioner is operational 4 OPERATION indicator This indicator flashes after power is on and illuminates when the unit is in operation 5 TIMER indicator This indicator illuminates when TIMER is set ON OFF NOTE All the pictures in this manual are for explanation purpose only They may be slightly different from the air conditioner...

Page 5: ...oner will automatically increase cooling or decrease heating 1 C per hour The set temperature will be steady 2 hours later The fan speed will be automatically controlled DRYING OPERATION The dry mode will automatically select the drying operation based on the difference between the set temperature and the actual room temperature The temperature is regulated while dehumidifying by repeating turning...

Page 6: ...TALLATION Before doing any work check the interior power supply cord and the main breaker capacity are sufficient and the installation area is sufficient and complies with the requirements Check that the power supply available agrees with nameplate voltage Electrical work wiring and cables must be performed in compliance with national and local wiring codes and standard Do not use the extension ca...

Page 7: ... Liquid side ø 6 35 Parts you must purchase Gas side ø 9 53 ø 12 7 5 Remote controller 2x1 6 Mounting screw ST2 9x10 2x2 7 Remote controller holder 2x1 8 Seal 2x1 9 Drain elbow 1x1 90 370 680 895 345 655 625 Model 18 21 Model 27 30 330 350 920 583 355 320 820 830 8 Loop a connective cable Model 18 21 Model 18 21 J287 EN indd 7 J287 EN indd 7 07 03 2006 9 30 12 Uhr 07 03 2006 9 30 12 Uhr ...

Page 8: ...must be marked relative number A1 A2 and B Model 27 30 NOTE At least two of A B C aspect are free from blocking The air conditioner can be connected only to a supply with system impedance no more than 0 26 ohm In case necessary please consult your supply authority for system impedance information Cautions on remote controller installation Before installation operate the remote controller to determ...

Page 9: ...gram To connect in the D E and F direction pipes will need to be extended Bend pipes carefully to avoid flattening or obstructing them if the pipes are bent incorrectly the indoor unit may be unstable on the wall Carefully arrange pipes so that pipes do not stick out of the rear plate of the indoor unit Never modify the unit by removing any of the safety guards or by passing any of the safety inte...

Page 10: ...ainst the mounting plate until the fixing prongs click into place in the retainers provided to that effect Drainage line Interconnection cable Note The condensate evacuation line should be taped to the refrigerant lines with vinyl tape a Access plate for the condensate drainage pump detection condensate pump is available as an accessory Condensate drainage line Vinyl tape a Drain hose Drain hose i...

Page 11: ... on the gauge then wait for 15 minutes If the needle moves there is a leak in the system Make the necessary adjustments or repairs and repeat this procedure until the needle no longer moves Open the service valves and top up the refrigerant charge if necessary This unit is shipped complete with a charge of R410A refrigerant that will be sufficient for an interconnecting piping length of 7 5 meters...

Page 12: ...es and do not deform or smash on the surface of cables NOTE Remark per EMC Directive 89 336 EEC For to prevent flicker impressions during the start of the compressor technical process following installation conditions do apply 1 The power connection for the air conditioner has to be done at the main power distribution The distribution has to be of a low impedance normally the required impedance re...

Page 13: ... 1Ph 50Hz L N 1 2 N 3 4 1 2 N 3 4 1 2 N 3 4 1 2 N 3 4 1 2 N 3 4 1 2 N 3 4 L N Indoor unit Outdoor unit A2 Unit A1 Unit Outdoor Power Supply 220 240V 1Ph 50Hz B Unit Indoor Power Supply 220 240V 1Ph 50Hz L L N N L L N N L L N N L L N N L L N N L L N N L L N N L N Indoor Unit A1 Unit A2 Unit B Unit A1 A2 B Outdoor Unit Power Supply 220 240 V 50Hz Power Supply 220 240 V 50Hz Power Supply 220 240 V 50...

Page 14: ...of indoor unit reaches 55 C outdoor unit will turn off external unit fan but still keep compressor running 2 Condition to stop defrosting Units will switch back to heating mode when either of the following conditions is met a Unit has been running at defrosting mode for 10 minutes b T3 20 o C Remark T3 is coil temperature of outdoor units NOTE The supply voltage must be consistent with the rate vo...

Page 15: ...of the unit 2 Stop the air conditioner and disconnect power Remove the batteries from the remote controller 3 The outdoor unit requires periodic maintenance and cleaning Do not attempt to do this yourself Contact your dealer or servicer Checks before operation Check that the wiring is not broken off or disconnected Check that the air filter is installed Check if the air outlet or inlet is blocked ...

Page 16: ...condition when the air conditioner has not been used for a long time or during first use of the unit 5 A peculiar smell come out from the indoor unit This is caused by the indoor unit giving off smells permeated from building material from furniture or smoke 6 The air conditioner turns to FAN only mode from COOL or HEAT For cooling and heating models only mode When indoor temperature reaches the t...

Page 17: ...ely 3 Wait while unit has enough time to cool the room D The compressor run continuously 1 Thermostat adjustment too low in heating mode or too high in cooling mode 2 Faulty fan 3 Refrigerant charge too low leak 4 Air or incondensables in refrigerant circuit 1 Check Thermostat setting 2 Check condenser air circulation 3 Find leak repair and recharge 4 Remove charge evacuate and recharge E The comp...

Page 18: ... 34 Outdoor 56 56 58 58 Indoor Unit Power Supply V Ph Hz 220 240 1 50 Ph 1 1 1 1 Fan Air flow Hi Mi Lo m3 h 500 430 370x2 500 430 370 600 520 420 500 430 370x3 500 430 370 600 520 420 Input Power W 39 5x2 39 5 44 39 5x3 39 5 44 Running Current A Dimension Height mm 250 250 265 250 250 265 Width mm 710 710 790 710 710 790 Depth mm 195 195 193 195 195 193 Weight kg 8 8 9 8 8 9 System Operation Contr...

Page 19: ...ate drain the refrigerant oil from each system into a suitable container and dispose of according to local laws and regulations governing disposal of oily wastes 3 Packaged unit can generally be removed in one piece after disconnection as above Any fixing down bolts should be removed and then unit lifted from position using the points provided and equipment of adequate lifting capacity Reference M...

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