Instructions Book
Contents
1. When interlocked only When not interlocked with an indoor unit Fresh Master Transmission line Remote controller PAR 21MAA PAR F27MEA Of ri lo STANDBY DAILY AUTO OFF CHECK 4 ia CERI pa p Sa CHEDE FINIE TEST RUN LINI C ERRDRCODE NoTAVAILABLE Selecting operation Button Used to switch between cooling fan and heating Temperature adjustment Button Used to set the temperature Setting is made in units of 1 C Every time is pressed the temperature goes up by 1 C Every time is pressed the temperature goes down by 1 C Checking test run Button Used only during checking test run Never use this button during nor mal operation Filter Button Pressed to reset the filter sign ENGLISH Display section DAILY D ON OFF AUTO OFF cox D REMAINDER E CA Litt Lilt ERROR CODE For purposes of explanation all the displays on this page are shown in their lit condition This configuration does not occur in the actual unit Current starting ending time Display When the time switch button is pressed the current time starting time and ending time are displayed for 10 seconds During timer operation the next starting time or ending time is always displayed Centralized control Display Displayed when control is executed by a separately sold cen2. 33 5 34 5 54 P32 11 44 12 56 GUF 100RD4 2 20 480 505 1 000 278 4 12 4 26 38 39 92 P63 The values given in the table for the noise level reflect the levels measured at a position 1 5 meters immediately below the unit in an anechoic chamber The noise at the air outlets at a 45 angle 1 5 meters in front is about 5 6 dB A higher than the values given in the table The above values apply during Lossnay ventilation when the fan speed is set to high speed Capacity in is heat recovery capacity by Lossnay core Cooling Heating capacity indicates the maximum value at operation under the following condition Cooling Indoor 27 C DB 19 C WB Outdoor 35 C DB 24 C WB Heating Indoor 20 C DB 13 8 C WB Outdoor 7 C DB 6 C WB Noise measurement is carried out in accordance with JIS B8628 Mitsubishi Electric measures products according to Japan Industrial Standard JIS B 8628 therefore Q H curves are measured by chamber method In the United Kingdam on site measurements by pitot tube method could be as much 20 difference from JIS test room conditions If the meas uring point is close to sources of turbulence like bends contractions and dampers etc it is difficult to measure air volume correctly A straight duct length more than 10D D duct diameter from the source of turbulence is recommended for correct measurement On site measurement should therefore be measured in accordance
3. bands and remove the water supply tube Do not remove the water supply tube from the solenoid valve unit with a pressure regulator When removing the water supply tube be sure that water is collected on the drain tray inside the main unit ENGLISH 3 Removing the humidifying elements Humidifying element 1 Pull the first humidifying element forward swing the rear side of the humidifying element to the right lift it upward and then pull it out diagonally Model name Quantity GUF 50RDH4 2 GUF 100RDH4 4 Humidifying element Rod for removal of the humidifying elements 2 For the third and subsequent humidifying elements pull the rod for removal of the humidifying elements forward until you can reach an element with your hands and then pull it out GUF 100RDH4 Caution Do not separate the rod for removal of the humidifying ele ments from the product Take out the water supply tube together with the humidifying element Collect the residual water in the humidifying ele ment using the drain tray Do not bend or stretch the water supply tubes How to wash the humidifying elements with water Fill a bucket or other container with water then shake each humidifying element four to five times up and down in the water to wash out any dust and particles A Caution Do not use a scrub brush to clean the humidifying elements Do not hose off the humidifying elemen
4. in a place where there is no accumulation of snow leaves or rubbish Do not stand on or place any items on the unit You may fall down or the item may fall causing injury A Caution The outdoor unit should be installed in a location where air and noise emitted by the unit will not disturb the neighbours 2 Fresh Master Warning The Fresh Master should be securely installed If the unit is loosely mounted it may fall causing injury 3 Remote controller Warning The Remote controller should be installed in such a way that children cannot play with it 4 Drain hose N Caution Make sure that the drain hose is installed so that drainage can go ahead smoothly Incorrect installation may result in water leakage causing damage to furniture 5 Power Supply fuse or circuit isolator Warning Make sure that the unit is powered by a dedicated power sup ply Other appliances connected to the same power supply could cause an overload Make sure that there is a mains power switch Be sure to adhere to the unit s voltage and fuse or circuit iso lator ratings Never use a cable or a fuse with a higher rating than the one specified 6 Grounding Caution The unit must be properly grounded Never connect the grounding wire to a gas pipe water pipe lightning conduc tor or telephone grounding wire If the unit is not grounded properly electric shock may result Check frequently that the groun
5. When an operation is restarted immediately after an operation has been stopped within 3 minutes During a defrosting operation of the outdoor unit 7 Installation and transferring works and checking ae 09 Regarding place for installation Regarding transfer of installation 7 Consult with your dealer for details on installation and transferring When removing and reinstalling the Fresh Master when you the installation enlarge your home remodel or move consult with your dealer in Z A n advance to ascertain the cost of the professional engineering work Lu Caution required for transferring the installation Never install the Fresh Master where there is a risk of leakage of flammable gas N Caution If gas leaks and accumulates around the unit fire can result When moving or reinstalling the Fresh Master consult with Never install the Fresh Master at the following place your dealer Defective installation can result in electric shock where there is much machine oil fire etc near ocean and beach areas where there is much salt Regarding noise where humidity is high In installing work choose a place that can fully bear the weight of where there are hot springs nearby the Fresh Master and outdoor unit and where noise and vibration where there is much sulfureted gas can be reduced where there is a high frequency processing machinery a high Choose a place where cool or warm air and noise from the out frequency
6. be set by fan operation For heating Press the selecting operation button to bring up the heating display Regarding displays during heating operation Under defrosting Displayed only during the defrosting operation Under preparation for heating Displayed from the start of heating operation until the moment warm air blows out When in the heating mode the humidifier will also operate For GUF 50 100RDH4 A Caution When the Fresh Master is used together with burners Never place a burner at a place where it is exposed to the airflow from the Fresh Master Doing so can result in imperfect combustion of the burner The microcomputer functions in the following cases The intake fan is not moving at the set speed Intake fan stops to prevent any cool air from escaping dur ing the defrosting operation 3 2 4 Temperature adjustment GUF 50 100RDH4 are OA processing unit and cannot adjust the indoor temperature even if the procedures given below are followed In the case of GUF 50 100RD4 the indoor temperature can be adjusted Set temperature display Room temperature display QonoFF FILTER BBE at CHECK TEST temperature button To change temperature Press the temperature button and set the temperature of your choice Pressing or QD once changes the setting by 1 C If the pressing is continued the setting continues to change by 1 C Indoor tem
7. mode is terminated When you wish to confirm the starting and ending time press the time selection button while timer is displayed Function of timer On timer Set the on timer for the time the working day begins in your com pany When the set start time arrives the Fresh Master starts operation Off timer Use the off timer as a reminder to turn off the Fresh Master When the set end work time arrives the Fresh Master stops operation There are three methods for using the timer 1 ON OFF Timer When setting both starting and ending time 2 On timer When only setting the starting time Ending time is setto _ __ 3 Off timer When only setting the ending time Starting time is setto _ ___ Display example of timer setting O The example shows a timer set for operation start at 8 00 and end at 17 00 Timer display Starting ending time display afa MITSUBISHI EYECTRIC ON OFF i J Timer button ewan Bal E a SADSOS Time selection button rary SES PAR F27MEA TIMER SET Time setting button 1 Press the timer button and erase the timer display 2 Press the time selection button and bring up the starting time display 3 Press the CA _ C7 button of the time setting and set the starting time When using it as an off timer set the starting time to ___ The __ ___ is displayed
8. of the Fresh Master thoroughly ventilate the room and contact your dealer Leaving the unit as it is can result in accidents due to oxygen deficiency When the Fresh Master is not to be used fora long time Ifthe Fresh Master is not to be used for a long time due to a sea sonal change etc run it for 4 5 hours with the air blowing until the inside is completely dry Failing to do so can result in the growth of unhygienic unhealthy mold in scattered areas throughout the room When it is not to be used for an extended time keep the power supply turned OFF If the power supply is kept on several watts or several tens of watts will be wasted Also the accumulation of dust etc can result in fire Keep the power switched ON for more than 12 hours before starting operation Do not turn the power supply OFF during seasons of heavy use Doing so can result in failure 1 3 Disposing of the unit Warning When you need to dispose of the unit consult your dealer If pipes are removed incorrectly refrigerant fluorocarbon gas may blow out and come into contact with your skin causing injury Releasing refrigerant into the atmosphere also dam ages the environment 2 Names and functions of various parts Fresh Master The Fresh Master supplies clean air that is close to the indoor temperature and humidity by using the Lossnay ventilation function and the direct expansion coil air conditioning function The Fresh Master u
9. of the outdoor units When the operation is started with cooling heating and other indoor units or the Fresh Master connected to the counterpart outdoor units are already running in the same operation mode the Remote controller displays air cooling heating mode However the operation comes to stop and you cannot get a desired mode When this occurs you will be notified by the cool or heating display that flashes in the liquid crystal display of the Remote con troller Set to the operation mode of other indoor unit or the Fresh Master by the operation switch button The above does not apply to the models that simultaneously run both the cooling operation and heating operation The outdoor units stop when all the indoor units and the Fresh Master connected to the counterpart outdoor units stop During heating operation even if the indoor unit or the Fresh Master is set to operation while the outdoor unit is in defrosting operation operation starts after the defrosting operation of the outdoor unit has ended Warning Check and confirm the power circuit before use For con tents refer to the previously described chapter Crucial points to be observed for safety ENGLISH 3 2 2 ON OFF Operation lamp ae MITSUBISHI ELECTRIC 22 a oniorr ON OFF button O 2 gogog puan Sal 4 FILTER SSS QO Start an operation Press ON OFF button Operation lamp light
10. technical element decreases gradually standard respecting electrical installation internal wiring If the humidifying power decreases in the course of use please rules and the installation instruction manual with the abso consider changing the humidifying element chargeable to the lute use of exclusive circuits The use of other products with customer the power source can result in burnt out beakers and fuses Although the time to change the humidifying element varies Never connect the grounding wire to a gas pipe water pipe arrester depending on the conditions such as the operating time and water or telephone grounding wire For details consult with your dealer quality it should generally be changed at every five years In some types of installation sites the installation of an earth leak age isolator is mandatory For details consult with your dealer 8 Specifications P P Air vol me External air load heat pro H Equivalent Ower Frequency Current Swe cessing capability kw eae Noise Weight quae Model name supply consumption Heati midifying indoor unit V Hz 5 W m3h us Cooling eang volume B 9 capability capability capability GUF 50RDH4 1 15 235 265 500 139 57 p2 2 70 33 5 34 5 57 P32 1 94 2 04 GUF 100RDH4 Single 2 20 480 505 1 000 278 a ap 5 40 38 39 98 P63 phase 50 5 57 6 21 GUF 50RD4 220 240 1 15 235 265 500 139 1 94 2 04
11. the Fresh Master After reading this manual keep it in an easily accessible and safe place for future reference The warranty will not apply to damage resulting from failure to follow the warnings and precau tions included in the Operating Instructions For use with the R410A amp R407C 1 Safety precautions Q Prohibited A WARNING Do not turn the remote controller on or off when flammable gas has leaked It could catch fire or cause explosion with sparks released from electric contractor Open windows to ventilate Don t operate with wet hands Electrical shock can result Wet hands prohibited Use the specified power supply and voltage Use of incorrect power supply could cause fire or Do not disassemble Do not modify or disassemble It could cause fire electric shock or injury Do not apply water to the unit and remote controller Electrical shock can result Do not touch Do not poke your fingers or sticks into the air intake and outlet while the product is operating Failure to heed this warning may result in injury electric shock Make sure the power supply isolator is turned off on the power distribution panel before starting maintenance It could cause electric shock or injury if it is turned on When any abnormal conditions burning smell or others are observed stop operation turn off the power supply isolator on the power distribution panel and
12. 1305875HJ1001 MITSUBISHI ELECTRIC CE ENGLISH Fresh Master Models GUF 50RDH4 GUF 50RD4 GUF 100RDH4 GUF 100RD4 Operating Instructions For the user Contents 1 Safety precautions 2 3 1 1 Installation ecceceeeceeceeeeeeeeeeeeeeteeeeeaeees 2 12 During Operation vcsecvssciestss Genesetiaaniestietnes 3 1 3 Disposing of the Unit eee eee 3 2 Names and functions of various parts 4 6 3 How to operate ccccecccceceeeeeeeeeseeceecsaeeeeeeees 7 9 3 1 When interlocked with an indoor unit 7 3 2 When not interlocked with an indoor unit 7 GUF 50RDH4 shown above 3 2 1 Before starting operation 0 008 T7 8 2 2 ONOFF reu Seite tdi de 7 Humidifier function not available on GUF 50RD4 and 3 2 3 Selecting operation 2 0 0 0 7 GUF 100RD4 3 2 4 Temperature adjustment 008 8 Enalishasonainal The ater languages vercionsare 3 2 5 Fan speed adjustment 8 iranelation of the original 3 2 6 TIME Selg erenn 8 3 2 7 Timer setting a e 9 4 Cleaning the machine 10 11 5 Inspection and maintenance GUF 50 100RDH4 only 11 13 6 TROUDIGSHOOUUNG aise csiesereecs erie aired ced leds 13 7 Installation and transferring works and checking 14 Bs SPCCHICATIONS esccisedccssesnvsandearesvennieraeeesaceeeserasaasad 14 Please read through these instructions in order to famil iarize yourself with the proper and safe procedures for operating
13. Fresh Master During the time operation the time setting button becomes void disabling time setting Press the time selection button and bring up the current time display Every time it is pressed the display changes current start end time gt time time no display A Caution When the current time is not yet set the current time dis play flashes disabling the setting of timer operation Set the current time by pressing the time setting C2 or CV_ button The time cannot be set while the timer is displayed While the CLOCK time is displayed press the time setting CA V C7 buttons and set the time The setting advances one minute every time the CAD button is pressed and goes back one minute every time the CY button is pressed When respective A_ CY_ buttons are pressed continuously the time display goes fast forward It advances in the order of 1 minute digit 10 minute digit one hour digit About 10 seconds after the button operation has been completed the current time and time displays disappear A Caution The Remote controller is equipped with a simplified clock with a precision of about or one minute per month The time must be readjusted reset every time the Fresh Master is subjected to a power stop or a power failure 3 2 7 Timer setting Ifthe timer is set the unit starts stops at the set time and the time
14. age the Remote controller and cause malfunction Never remove the upper case of the Remote controller It is dangerous to remove the upper case of the Remote control ler and touch the printed circuit boards inside Doing so can result in fire and failure Never wipe the Remote controller with benzene thinner chemical rags etc Doing so can result in discoloration and failure To remove heavy stains soak a cloth in neutral detergent mixed with water wring it out thoroughly wipe the stains off and wipe again with a dry cloth Never block or cover the Fresh Master or outdoor unit intakes or outlets Tall items of furniture underneath the Fresh Mas ter or bulky items such as large boxes placed close to the outdoor unit will reduce the unit s efficiency Do not direct the airflow at plants or caged pets ENGLISH In case of failure Warning Never remodel the Fresh Master Consult your dealer for any repair service Improper repair work can result in water leak age electric shock fire etc If the Remote controller displays an error indication the Fresh Master does not run or there is an abnormality stop operation and contact your dealer Leaving the unit as it is under such conditions can result in fire or failure If the power isolator is frequently activated get in touch with your dealer Leaving it as it is can result in fire or failure If the refrigeration gas blows out or leaks stop the opera tion
15. are specified in the manual supplied with the product or on the product nameplate Mitsubishi Electric shall assume no liability for any damage breakdown malfunction or accident resulting from the charging of a refrigerant not specified by Mitsubishi Electric The unit should not be installed by the user Ask the dealer or an authorized company to install the unit If the unit is installed improperly water leakage electric shock or fire may result Use only accessories authorized by Mitsubishi Electric and ask your dealer or an authorized company to install them If accessories are installed improperly water leakage electric shock or fire may result The installation Manual details the suggested installation method Any structural alteration necessary for installation must comply with local building code requirements Never repair the unit or transfer it to another site by yourself If repair is performed improperly water leakage electric shock or fire may result If you need to have the unit repaired or moved consult your dealer The appliance is not to be used by children or persons with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction Ea ENGLISH Children should be supervised to ensure that they do not play with the appliance 1 Outdoor unit Warning The outdoor unit must be installed on a stable level surface
16. arth leakage isolator Cool air or warm air does not come out The liquid crystal display shows that it is in opera tion The restart preventing circuit is in operation for 3 minutes Wait for a while To protect the compressor a 3 minute restart preventing circuit is built into the Fresh Master Therefore there are occa sions sometimes when the compressor does not start running immediately There are cases when it does not run for as long as 3 minutes Fresh Master operation is started during the heating and defrosting operation Wait for a while Heating operation starts after ending de frosting operation It runs briefly but soon stops The check and check code flashes on the liquid crystal display There are some obstacles at the air inlet and outlet of the Fresh Master and outdoor unit Rerun after removal The filters are filled with dust and dirt Rerun after cleaning the filters Refer to page 10 Cleaning the machine Do not humidify GUF 50 100RDH4 only The Fresh Master is not set to the heating mode Set to the heating mode Water is not supplied Open the service valve If operation stops due to a power failure the restart preventing circuit at power failure functions and disables operation even after power restoration In this case press the ON OFF button again and start operation ENGLISH If malfuncti
17. consult your dealer Continuing operation under such conditions could cause electric shock fire or damage D The instructions given must be followed Do not place a burning appliance in a place where it is exposed directly to the wind from Fresh Master It could cause an accident as a result of incomplete combustion Don t operate with the BY PASS when heating the room in winter Condensed water may drip from the unit and wet the surface of ceiling Do not use at a place where exposed to high Prohibited temperatures 40 C or higher naked flames or in The instructions environment with heavy fumes given must be The appliance is not be used by children or per ieeaiind cause fire followed sons with reduced physical sensory or mental Donet usein an environinent sch asathemical capabilities or lack of experience and knowledge unless they have been given supervision or factory where hazardous gases such as acidic gases oe g P alkaline gases organic solvent fumes paint fumes or Children should be supervised to ensure that oi E acca ga components are generated they do not play with the appliance Wa a A CAUTION Securely install parts after maintenance It could cause injury if parts fall Put on gloves during maintenance It could cause injury Make sure the power supply isolator is turned off on the power distribution panel when Fresh Master is no
18. d wire from the outdoor unit is properly connected to both the unit s ground terminal and the grounding electrode 1 2 During operation Warning Do not splash water over the unit and do not touch the unit with wet hands An electric shock may result Do not spray combustible gas close to the unit Fire may result Do not place a gas heater or any other open flame appliance where it will be exposed to the air discharged from the unit Incomplete combustion may result Do not remove the front panel or the fan guard from the outdoor unit when it is running You could be injured if you touch rotating hot or high voltage parts Never insert fingers sticks etc into the intakes or outlets oth erwise injury may result since the fan inside the unit rotates at high speed Exercise particular care when children are present If you detect odd smells stop using the unit turn off the power switch and consult your dealer Otherwise a break down electric shock or fire may result When you notice exceptionally abnormal noise or vibration stop operation turn off the power switch and contact your dealer Do not leave handicapped people or infants sitting or stand ing in the path of the airflow from the Fresh Master This could cause health problems Caution Do not use any sharp object to push the buttons as this may damage the Remote controller Do not twist or tug on the Remote controller cord as this may dam
19. e maintenance cover for humidifying Remove the seven mounting screws slide the maintenance cover to the right and remove it from the potbelly shaped holes six locations for the GUF 50RDH4 ENGLISH How to clean the strainer filter Strainer Filter Strainer cap O ring P20 O ring P22A 1 Rotate the strainer cap counterclockwise and remove it 2 Use water to wash off any dirt adhering to the filter 3 Replace the strainer cap How to remove the humidifying elements The heat exchanger is located on the left side and the hanging bolt is located on the right side Swing the rear side of each of the hu midifying elements to the right and take out the humidifying element while making sure not to touch the heat exchanger or the hanging bolt 1 Remove the inner lid Inner lid Grip part 1 Place your fingers on the grip part and pull the inner lid forward 2 Holding both ends with your hands pull the inner lid for ward 2 Remove the water supply tube from the humidifying element Water supply tube Humidifying element Water supply tube Holding the hose bands indicated by 1 to 6 with your fingers remove the water supply tubes Referring to the procedure en titled removing the humidifying elements below remove the water supply tube at the rear while taking out the front humidi fying element A Caution To remove the water supply tube hold and slide the hose
20. intenance work should only be performed by someone who has received the necessary training How to remove each part 1 Maintenance cover 1 Remove the screw one piece left side of the Maintenance cover 2 Pull back the hinges open the Maintenance cover and disengage the cover from the catches Catch mS Maintenance cover A Caution The Maintenance cover must be removed 2 High efficiency filters Remove the high efficiency filters Optional parts from the upper right side of the Lossnay cores 2 units High efficiency filters Optional part 3 Lossnay cores Take hold of the handle and draw the Lossnay cores out from the main unit 2 Lossnay cores Handle Lossnay core f f Main unit Air filter 4 Air filters After pulling out the Lossnay cores undo filter guides then remove the air filters located at the bottom left and right of the Lossnay cores as below 4 filters ENGLISH Filter stopper Filter guide Caution Bow filter stoppers a little to remove them from filter guide Take filter stoppers careful not to break them How to clean 1 Air filters Use a vacuum cleaner to remove light dust To remove stubborn dirt wash in a mild solution of detergent and lukewarm water under 40 C Vacuum cleaner Air filter Caution Never wash the filters in very hot water of 40 C or hotter and never wash them by rubbing them Do not dry the filter
21. midify Inspect for cracks in O rings Replace the O rings if cracked Note 1 Water leakage Humidifying elements Inspect for water leakage from the sur face of each of humidifying element Replace the humidifying element if water spurts from its surface Note 2 Water leakage Inspect for dust and particles on the surface of each humidifying element If the air pathway is covered by dust or particles carefully clean it using a vacuum cleaner or wash it with water by referring to the cleaning procedure on page 12 Reduced airflow Reduced humidifying power Note 1 Replacement O rings Commercially available O rings P22A and P20 Note 2 A small amount of water may form through dew condensation but it is not abnormal Preparation before cleaning Mounting screw Maintenance cover for humidifying Drain pipe Discharge valve j S a IF CN A g A a fo Q T AG A os amm aep h A J rae cos Service valve 1 Close the service valve to prevent residual water from spat tering 2 Take a countermeasure against water leakage Water inside the humidifying elements will leak Place a vinyl sheet in the ceiling or take another countermeasure to pre vent water leakage 3 Drain the residual water from the pipe Place a bucket or other container under the discharge valve and open the valve to collect the residual water in the pipe 4 Remove th
22. next to the time i e 23 50 4 Press the time selection button and bring up the ending time display 5 Press the CA C7 button of the time setting and set the ENGLISH ending time When using it as an on timer set the ending time to __ The __ ___ is displayed next to the time i e 23 50 6 Press the timer button and bring up the timer display Bringing up the timer display completes the setting Every time the CA C7 button of the timer setting is pressed once it advances or goes back by 10 minutes If the button is pressed continuously it advances or goes back continuously First set the hour digit and then set the minute digit When the ON OFF timer mode is set you can run on timer or stop off timer operation by pressing the ON OFF button even when there is remaining time Release Press the timer button and erase the timer display 4 Cleaning the machine To prevent decline in the Lossnay performance clean the air filter and Lossnay core as well as replace the high efficiency filters Air filter clean at least once a year Lossnay core clean at least once every 2 years High efficiency filters replace every 3 000 hours approx A Caution Before you start cleaning stop operation and turn OFF the power supply Remember that the fan is rotating inside at high speed posing a serious risk of injury Always wear gloves when cleaning the unit Ma
23. nit is operated in dry mode When using with multiple indoor units When using with multiple indoor units that are set differently the Fresh Master will operate in the mode with priority of heat cool and fan When operating only the Fresh Master The Fresh Master can be operated independently by pressing the Ventilation button on the Remote controller in this case the operation mode will be fan Pressing the Ventilation button each time will switch the display between Stop Low and High Stop Low gt High A 3 2 When not interlocked with an in door unit GUF 50 100RD4 will adjust the temperature according to the indoor temperature set using the Remote controller Inthe case of GUF 50 100RDH4 there is no temperature control since the temperature is adjusted according to the outside air temperature 3 2 1 Before starting operation Make sure that the power supply is turned ON before use Keep the power supply turned ON at all times when the Fresh Master is in use Use of the unit without power can result in compressor failure Start running after the HO display has disappeared The HO display briefly appears on the room temperature display max 10 minutes when the power is turned on and after a power failure This does not indicate any failure of the Fresh Master The operation modes of the Fresh Master air cooling operation and heating operation are different from those
24. ons persist after you have checked the above turn the power supply OFF and contact your dealer with information about the product name the nature of the malfunction etc If the display of check and 4 digit check code flashes tell the dealer contents of the display check code Never attempt to repair by yourself The following symptoms are not the Fresh Master failures The air blown out from the Fresh Master can sometimes give off odours This is due to cigarette smoke contained in the air of the room the smell of cosmetics the walls furniture etc absorbed in the Fresh Master Ahissing noise can be heard immediately after the Fresh Master is started or stopped This is the sound of the refrigeration flowing inside the Fresh Master The problem is insignificant The Fresh Master sometimes snaps or clicks at the beginning or end of cooling heating operation This is the sound of friction on the metal sections due to inflation and contraction caused by temperature change The problem is insignificant It is recommended that the air blown out from the Fresh Master be directed to the air conditioner first and then directed into the room How ever the air may be directed from the Fresh Master to the room without going through the air conditioner In this air blowing method cold air blows out during heating operation in the cases listed below In that case please change the air blowing method Atthe start of an operation
25. perature can be set within the following range X In the case of GUF 50 100RDH4 Cooling dry 19 to 30 C set the temperature the same as Heating 17 to 28 C the indoor unit Itis impossible to set the temperature in fan operation The range of temperature display is 8 C to 39 C Outside this range the display flashes either 8 C to 39 C to inform you if the temperature is lower or higher than the displayed temperature 3 2 5 Fan speed adjustment ENGLISH FA MITSUBISHI ELECTRIC B 35 Fan speed display al 27 Teme OG qes ponums Z as fan speed D oo button PAR F27MEA To change fan speed Set the desired fan speed Every time you press the fan speed button once it switches from the low speed or high speed settings alternatively Display of the Remote controller Low High D D al Every time the fan speed adjustment button is once pressed the fan speed is changed 3 2 6 Time setting Current time display Time display ae MITSUBISHI ELACTRIE QOoniorr time selection opon O afro Fy 4 FILTER SSS VSG outon BD o Oo 6 6 PAR F27MEA TIMER SET timer button time setting button Set the current time after turning ON the power of the Fresh Mas ter or after restoration from a power failure It can be set regardless of the operation of the
26. s by exposing them to a flame 2 Lossnay cores Use a vacuum cleaner to suck up the dust and dirt on the exposed surfaces of the Lossnay cores Use a soft brush only to clean exposed surface areas Do NOT wash in water Vacuum cleaner with brush attachment Lossnay core Caution Do not use the hard nozzle of the vacuum cleaner If may damage the exposed surfaces of the Lossnay cores Under no circumstances should the Lossnay cores be washed in water 3 High efficiency filters Optional parts The high efficiency filters cannot be reused Always replace with new filters For details consult your dealer 5 Inspection and Maintenance Assembly after maintenance Bearing in mind the following points assemble the parts following the sequence for their removal in reverse Arrange the Lossnay core with the air filter side as shown in the name plate on the Fresh Master If the unit is to be used for prolonged periods of time please have the following items inspected by an authorized service office at intervals of about once a year Be sure to turn off the isolator of the distribution board before conducting maintenance or inspection Part to be inspected Description of maintenance and inspection Inspection item Action to take Possible consequence if main tenance is not conducted Strainer Inspect for dust clogging Remove and clean the dust if clogged Unable to hu
27. s up and operation starts Stop an operation Press the ON OFF button again Operation lamp goes off and operation stops Once the buttons have been set pressing of the ON OFF button only can repeat the same operation thereafter During operation the operation lamp above the ON OFF button lights up Caution Even if the operation button is pressed immediately after the operation has stopped operation will not restart for about 3 minutes This function protects the machine It automatically starts operation after approximately 3 minutes 3 2 3 Selecting operation A MITSUBISHI ELECTRIC 5 3E Operation mode on orF oO com ff x selecting operation 5 ic 5 button o T TIMER SET When selecting operation Press the selecting operation button Consecutive press of the selecting operation button switches the operation over to cooling fan automatic and heating For the contents of operation check the display For cooling Press the selecting operation button and bring up the cool ing display Caution Never expose your body directly to cool air for a long time Excessive exposure to cool air is bad for your health and should therefore be avoided For fan Press the selecting operation button and bring up the fan display The fan operation functions to ventilate The temperature of the room cannot
28. ses the high efficiency filter for dust removal and permeable film humidifier to create a pleasant indoor environment ENGLISH Direct expansion coil Permeable film humidifier High efficiency filters Optional parts Heats or cools the air supply after heat exchange Performs clean humidifying of the air supply Removes dust from the outside air f f after heat exchange Electronic expansion valve Not available on GUF 50 and 100RD4 Maintenance cover for humidifying Maintenance cover Control box Lossnay core Temperature and humidity are exchanged between supply air and exhaust air Duct connection flange Bx He Damper plate SF Switches between the Lossnay ventilation gt o and normal ventilation Ceiling suspension fixture Water supply tube Discharge valve Service valve Supplies water to the permeable film humidifier Drain discharge hole Air filter Exhaust fan Strainer O ring installed Prevents clogs in the Lossnay core Fan used to expel dirty air to outside of the room f Air supply fan Fan to supply outside air to the inside GUF 50RDH4 shown above Outdoor unit Remote controller Outdoor units differ according to systems and can sometimes be in Check out your remote controller Different controllers are used for configuration other than those described in this manual different systems If you open the door the name of the Remote controller is shown at the lower left Air outlet Remo
29. t used for a long period of time It could cause electric shock power leakage or fire as a result of deteriorated insulation gt Before operating the unit make sure you read all the Safety precautions gt Safety precautions lists important points about safety Please be sure to follow them Symbols used in the text Warning Describes precautions that should be observed to avoid the risk of injury or death to the user N Caution Describes precautions that should be observed to prevent dam age to the unit Symbols used in the illustrations Q A Indicates that important instructions must be followed Indicates a part which must be grounded Beware of electric shock This symbol is displayed on the main unit label lt Colour Yellow gt Warning Carefully read the labels affixed to the main unit 1 1 gt After you have read this manual keep it and the Installa tion Manual in a safe place for easy reference whenever a question arises If the unit is going to be operated by another person make sure that this manual is given to him or her Installation Warning Never charge any types of refrigerant other than those specified by Mitsubishi Electric Failure to follow this warning may result in violation of law or blowout explosion or fire when the product is used serviced or disposed of The types of refrigerant that can be used
30. te controller PAR 21MAA PAR F27MEA Air inlet o d g O a CD a am E ae G a E a L mwa Moo Tee Diagram of a controller with the door open Grounding conductor Front panel service panel A Caution Carry out grounding work Never connect the grounding wire Display section to a gas pipe water pipe arrester or telephone grounding wire Improper grounding work can result in electric shock Operation section Diagram of a controller with the door closed Wiring diagrams When interlocked with an indoor unit Fresh Master 7N J Indoor Unit Transmission line Remote controller PAR 21MAA PAR F27MEA Operation section Open the door D ON OFF Button After natives between run and stop every time it is pressed The lamp on the button stays lit during operation Ventilation Button Used when switching the ventilation of the Fresh Master between Stop Low and High Fan speed adjustment Button Used to switch the fan speed between high and low Time selection Button Used to switch between the current time starting time and ending time Time setting Button Used to set the current time starting time and ending time Timer Button Used to switch between continuous operation and timer operation
31. tralized control unit etc Timer Display This displays the modes of continuous operation timer operation Time is simultaneously displayed at the time of timer operation Operation mode Displays the status of operation Preparing for Heating Display Displayed from the start of heating operation until the moment warm air blows out Defrosting Display Displayed during defrosting operation Checking Display This displays indication when an abnormality occurs in the unit Set temperature Display Displays the set temperature Address numbers of indoor unit unit in linked motion Display Displayed when some abnormality occurs in the unit Error number Display Displays the 4 digit checking code when an abnormality occurs in the unit Display Displayed while the air conditioner is powered Louver operation Display This displays the operation of a swing louver This does not display in case of stop M Not available Display When a button is pressed for any function that the indoor unit cannot perform this display flashes concurrently with the display of that func tion Ventilation Display Displayed during the Fresh Master s operation Position of built in room temperature sensor Set effective for one hour Display Displays when the low air blow downward blow or horizontal blow dif fers according to model are set in the air cooling and electronics dr
32. ts Doing do so will damage them Do not use hot water of 40 C or hotter nor use detergents to clean the humidifying elements How to install the humidifying elements Check after inspection 1 Open the service valve as necessary Since humidification is not needed during the summer it is recommended that the service valve be closed 2 During the winter the season requiring humidification make sure that the power to the heater for prevention of freezing is on 3 Conduct a test and confirm that there is no water leakage Rod for removal of the humidifying elements original position Install the humidifying elements in the reverse order of their removal For the GUF 100RDH4 return the rod for removal of the humidify ing elements to its original position and then insert the humidify ing elements Securely connect the water supply tubes and make sure there is no water leakage 6 Troubleshooting Before you ask for repair service check the following points State of Machine Remote Controller Cause Troubleshooting It does not run display is not lit up No display appears even when the ON OFF but ton is pressed Power failure Press the ON OFF button after power restoration The power supply is turned OFF Turn the power supply ON The fuse in the power supply is gone Replace fuse The earth leakage isolator is gone Put in the e
33. welder etc door unit s air outlet do not inconvenience the neighbors where acid solution is frequently used If any alien object is placed near the outdoor unit s air outlet where special sprays are frequently used decreased performance and increased noise can result Avoid Install the Fresh Master horizontally Otherwise water leakage placing any obstacles adjacent to the air outlet can result If the Fresh Master or outdoor unit produces any abnormal sound Take sufficient measures against noise when installing the Fresh consult with your dealer Master at hospitals or communication related businesses If the Fresh Master is used in any of the above mentioned Maintenance and inspection environments frequent operational failure can be expected It is Ifthe Fresh Master and outdoor unit is used throughout several advisable to avoid these types of installation sites seasons the insides can get dirty reducing the performance For further details consult with your dealer Depending upon the conditions of usage foul odours can be generated and drainage can deteriorate due to dust and dirt etc Regarding electrical work A oe Time to change the humidifying element GUF 50 100RDH4 only Caution Because impurities and contamination in tap water accumulate on The electrical work must be undertaker By a person whois the humidifying element the humidifying power of the humidifying qualified as an electric engineer according to the
34. with BSRIA guideline Commissioning Air System Application procedures for buildings AG3 89 3 2001 MITSUBISHI ELECTRIC CORPORATION 14
35. y operation This display disappears after the elapse of one hour Now checking test run Display Filter Display Displayed when it is time to clean the filter Sensor Display Shows a position of the sensor that measures the room temperature Operation Lamp Lights up during operation goes off during stop and flashes in case of abnormality Room temperature Display Displays the temperature of the air sucked in during operation The range of display is 8 C to 39 C For temperatures outside this range the display flashes at 8 C and 39 C YY Up down airflow direction Display Displays the air blowout direction with a mark W Fan speed Display Displays the selected fan speed When interlocked only ENGLISH 3 How to operate 3 1 When interlocked with an indoor unit Operation will be synchronized with an indoor unit The humidifier will be operated by the heating signal received from the indoor unit For GUF 50 100RDH4 Inthe case of GUF 50 100RDH4 there is no temperature control since the temperature is adjusted according to the outside air temperature Starting and stopping operation Using the Remote controller to start or stop the indoor unit will automatically start or stop the Fresh Master Operation modes The Fresh Master will operate in the same mode as the synchro nized indoor unit heat cool and fan The Fresh Master will be cool when the indoor u
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