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14

Issue

Check items

Solution

Odors 

comming 

from system 

Check for source of odor.

Eliminate the odor

and clean filter.

Check for inclimate weather or

excessive wireless signals.

Power unit down for 3 minutes

and try operation again.

Outdoor unit 

has mist/fog 

Is system operating in heating?

While in defrost unit may

discharge mist/fog until clear of

moisture.

Noise like

 there is water 

inside unit 

Did air conditioner just come on?

Noise is the sound of

refrigerant flowing inside the

system. Once stabilized

noise will discontinue.

Crackling 

sound 

Did air conditioner just come on?

Temprature difference between

plastic front and dicharge temp.

may be great once temprature

stabilzes noise will discontinue.

Service and Assistance

Air conditioner 

operates 

abnormally

1

2

3

Before  calling  for  service,  please  check  the  "Basic  troubleshooting"  section 

above. This may help you to find the answer to your problem, avoid unnecessary 

service calls, and save the cost of a service call if the problem is not due to the 

product itself. If you have checked the "Basic troubleshooting" section and still 

need help, below you will find a list of available services:

You can find the name of your local Authorized Service Provider by visiting our 

website at www.friedrich.com. 
If you require further assistance please call 

Friedrich customer support at 1-800-541-6645. 

Before calling please make sure that you have the full model and serial number, 

as well as the date of purchase of you equipment available. Providing us with this 

information will allow us to better assist you.

Summary of Contents for MRM18Y3J

Page 1: ...Models Indoor Unit Outdoor Unit MWM18Y3J MWM24Y3J MRM18Y3J MRM24Y3J 960 910 06...

Page 2: ...Remote Screen Operation Guide Buttons on remote controller 3 Introduction for icons on display screen 3 Introduction for buttons on remote controller 4 Function introduction for combination buttons 7...

Page 3: ...door unit or put heavy objects It may cause damage or personal injury Do not extend fingers or objects into air inlet or air outlet It may caus personal injury or damage Air Conditioner should be prop...

Page 4: ...ver air outlet heating indicator temp indicator cooling indicator power indicator receiver window aux button drying indicator display remote control air inlet handle handle air outlet Notice Actual pr...

Page 5: ...TURBO SLEEP LIGHT Press it to set auto on timer Press to set clock 1 6 7 5 3 2 4 11 10 14 9 12 13 15 Operation of Remote Controller 3 9 10 13 12 5 4 11 8 7 2 1 6 8 Press to turn on off the light Pres...

Page 6: ...ay After pressing TIMER button ON or OFF will blink This area will show the set time SET TIME display Pressing TEMP button set temperature ambient temperature outdoor ambient temperature and blank is...

Page 7: ...d High Your selection will be displayed in the LCD windows except the AUTO fan speed FAN SPEED display is displayed when pressing the to clear the display Operation of Remote Controller icon SENSOR ic...

Page 8: ...aulted In AUTO mode the set temperature will not be displayed on the LCD and the unit will automatically select the suitable operation mode in accordance with the room temperature to make indoor room...

Page 9: ...nit will carry out the command as indicates the guide louver swings as fan will continue operation for 10 min utes in order to dry the indoor unit even though you have turned off the unit HEAT mode Pr...

Page 10: ...teries Diagram for removal of batteries Replacement of Batteries Press and buttons simultaneously to lock or unlock the keypad If the remote controller is locked is pressing any button blinks three ti...

Page 11: ...will operate under auto mode aux button panel Clean and maintenance Note Turn off the air conditioner and disconnect the power before cleaning the air conditioner to avoid electric shock Do not wash t...

Page 12: ...he filter When the filter is very dirty use warm water below 113 F to clean it and then allow to dry Install the filter and then close the panel cover tightly Note The filter should be cleaned every t...

Page 13: ...If yes please contact dealer 5 Check whether drainage pipe is damaged 1 Disconnect power supply 2 Clean filter and indoor unit s panel 3 Check whether mounting bracket for outdoor unit is damaged or c...

Page 14: ...lect proper angle and point the remote controller at the receiving window on indoor unit Check and replace batteries If so please discontinue use and contact dealer for replacment Check check for dama...

Page 15: ...midity Allow unit to run for sometime Mist fog should stop once normal Indoor conditions stabilize Issue Check items Solution Cannot adjust set temprature Unit operating under Auto mode Temperature ca...

Page 16: ...zes noise will discontinue Service and Assistance Air conditioner operates abnormally 1 2 3 Before calling for service please check the Basic troubleshooting section above This may help you to find th...

Page 17: ...tor and position If any of the below occur please disconnect power and contact qualified servicer immediately Power cord has overheating or damaged Unit operates loudly or abnormally during operation...

Page 18: ...t 20 in At least 12 in At least 12 in At least 7 Ft Space to the floo Space to the obstruction Space to the obstruction Space to the ceiling At least 10 Ft Space to the obstruction Space to the wall A...

Page 19: ...for use with equipment Basic requirement Outdoor unit Indoor unit Installing the unit in the following locations may cause operational issues with equipment If unavoidable seek assistance from local d...

Page 20: ...y voltage until installation is complete 7 The temperature of refrigerant circuit will be high please keep communication cable clear of copper tubes 1 Qualified installer must ensure proper grounding...

Page 21: ...le should be a little lower than the wall mounted frame shown as below Step three open piping hole Left Wall 3 Right Mark center location Level Rear piping hole Wall Space to the wall above 6 in Space...

Page 22: ...flare nut with torque wrench 2 When select leading out the pipe from left or right please cut off the corresponding hole on the bottom case cut off the hole left right 1 The pipe can be led out in th...

Page 23: ...0 55 60 65 70 75 15 20 Insulating pipe 1 Connect the drain hose to the outlet pipe of indoor unit 2 Bind the joint with hose clamp outlet pipe drain hose drain hose tape outlet pipe drain hose insulat...

Page 24: ...ical connections must be completed by a qualified professional If required by local code install circuit breaker inline Must be 3 Pole power connection wire cable cross hole 2 Make the power connectio...

Page 25: ...te The power cord and control wire can t be crossed or winding The drain hose should be bound at the bottom drain hose band connection pipe indoor power cord Step nine hang the indoor unit 1 Pass wrap...

Page 26: ...t Make sure the support can withstand at least four times of the unit weight The outdoor unit should be installed at least 1 in above the floor in order to install drain joint For a unit with cooling...

Page 27: ...y hand 4 Tighten the flare nut with torque wrench by referring to the sheet below handle screw gas pipe liquid pipe liquid valve gas valve flare nut pipe joint Hex nut diameter Tightening torque N m 6...

Page 28: ...t wire 2 Secure the power connection wire and signal control wire with wire clip only for cooling and heating unit Note After tighten the screw pull the power cord slightly to check if it is firm Neve...

Page 29: ...upwards The drain hose can t be fluctuant The drain hose can t be fluctuant The water outlet can t be fluctuant The water outlet can t be placed in water Note Step six neaten the pipes 1 The pipes sh...

Page 30: ...to the nitrogen tank regulator 3 System should hold 550 Psig for one hour Begin with a 150 psig for 5 min b 300 psig for 15 min c 550 psig for 1 hour 4 Test all connections with bubble solution 5 If...

Page 31: ...acuum pump and watch that the manifold remians at 0 1MPa If pressure decreases then break vacuum and check for leaks with pressure test 5 Remove the piezometer open the valve core of liquid valve and...

Page 32: ...f connection pipe are open completely 1 Preparation of test operation Customer approves of installation Specify the important notes for air conditioner to the client 2 Method of test operation Turn on...

Page 33: ...te piping D Put on the flare nut Remove the flare nut on the indoor connection pipe and outdoor valve install the flare nut on the pipe union pipe pipe E Expand the port Expand the port with expander...

Page 34: ...Friedrich Air Conditioning Co 10001 Reunion Place Suite 500 San Antonio Texas 78216 1 800 541 6645 www friedrich com...

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