Midea MFE-60AMN1-RB4W Service Manual Download Page 48 | Manualshive

Page: 48 / 57

background image

45

9.3.5 High pressure protection

9.3.6 Low temperature protection

9.3.7 Low pressure protection

Low temperature protection

Possible reason

1: The outdoor ambient temp. is low.

2: The wires are loose to the temp. sensor.

3: The temp. sensor is defective.

4: The evaporator or the filter is dirty.

5: System has block.

Low pressure protection

Possible reason

1: The wires are loose to the pressure switch.

2: The pressure switch is defective.

3: System has refrigerant leakage.

4: The evaporator or the filter is dirty.

5: System has block.

«
...
46
47
48
49
50
...
»

Summary of Contents for MFE-60AMN1-RB4W

Page 1: ...ARN1 RB4W MFE 60AMN1 RB4W Code Factory model Model Power supply 2T0043800005 CE KFR160LW SDN1Y E B4 MFE 60AMN1 RB4W 3Ph 380 420V 50Hz 2T0043800026 CE KFR160LW SDN1Y E B4 W J MFE 60ARN1 RB4W 3Ph 380 42...

Page 2: ...diagram 5 4 Wiring diagram 6 4 1MFE 60AMN1 RB4W 6 4 2MFE 60ARN1 RB4W 2T0043800026 7 4 3MFE 60ARN1 RB4W 2T0043800036 8 5 Installation details 9 5 1 Installation place 9 5 2 Installing 10 5 3 Refrigera...

Page 3: ...function 32 8 1Main data introduction 32 8 2Main Protection 32 8 3Operation modes and functions 33 8 4Other functions 40 9 Trouble shooting 40 9 1Self diagnosis 40 9 2LEDs for the indication of outdo...

Page 4: ...use flammable gas or combustible near the product When flammable gas leaks turn off the gas and open a window for ventilation before turn the product on If strange sounds or small or smoke comes from...

Page 5: ...oft cloth to clean Do not use harsh detergents solvents etc Do not touch the metal parts of the product when removing the air filter They are very sh arp Do not step on pr put anything on the product...

Page 6: ...3 2 Dimension 2 1 Indoor Unit Dimension Mode W mm D mm H mm 55K 600 358 1900...

Page 7: ...Outdoor Unit Dimension Model W mm D mm H mm W1 mm A mm B mm MOI 60H RB4W 940 360 1245 1020 602 380 MOU 60HN1 RB4W 2T0043800026 900 350 1170 985 590 378 MOU 60HN1 RB4W 2T0043800036 938 633 5 404 448 37...

Page 8: ...switch High pressure switch CHECK VALVE Heating Model only CAPILIARY TUBE For MOI 60H RB4W there is no low pressure switch MOU 60HN1 RB4W 2T0043800026 LIQUID SIDE GAS SIDE HEAT EXCHANGE EVAPORATOR HEA...

Page 9: ...6 4 Wiring diagram 4 1MFE 60AMN1 RB4W Indoor Unit Outdoor Unit...

Page 10: ...7 4 2MFE 60ARN1 RB4W 2T0043800026 Indoor Unit Outdoor Unit...

Page 11: ...8 4 3MFE 60ARN1 RB4W 2T0043800036 Indoor Unit Outdoor Unit...

Page 12: ...air circulation and to allow maintenance work and the connections of electrical and refrigerant circuit lines It may be installed on a floor or flat roof or wall mounted provided its weight is proper...

Page 13: ...ll of machine oil 2 A saline place such as coast 3 Hot spring resort 4 A place full of sulfide gas 5 A place where there are high frequency machines such as wireless installation welding machine medic...

Page 14: ...ng the pipes wires Pull down the two knobs marked PULL on the grid take off the two straps then the air inlet grid goes free 3 Take the Pipe Clip off before connecting the pipes and wiring fit it when...

Page 15: ...ntralized 3 Do not make the angle of inclination more than 45 degrees while shipping Avoid horizontal storage 4 Be sure the electric insulation work is well done if installed on metal ceiling wall 5 F...

Page 16: ...Product Data Plate If you have to use longer pipe for every meter plus pipe the refrigerant should be added according to the following calculation Capacity Btu h Pipe size Standard length m Max Eleva...

Page 17: ...ir through the maintenance port on the low pressure valve closed It will take about ten seconds Then screw tightly the maintenance port When supplement the refrigerant fill through the maintenance por...

Page 18: ...both the indoor and outdoor unit let th e air exhaust out from the maintenance gap on he low pressure cut off valves of the outdoor unit Screw the nuts tightly on the maintenance gap after the air ha...

Page 19: ...refrigerant circuit may freeze and block capillary tubing Water may lead to corrosion of parts in the refrigerant system Therefore the indoor units and the pipes between indoor and outdoor units must...

Page 20: ...1Mpa If the meter does not indicate 0 1Mpa after pumping 30 minutes it should be pumped 20 minutes more If the pressure can t achieve 0 1Mpa after pumping 50 minutes please check if there are some le...

Page 21: ...are set to the closed position 2 Connect the charge set and a charging cylinder to the service port of the 3 way valve 3 Air purging Open the valves on the charging cylinder and the charge set Purge t...

Page 22: ...torque 18N m Be sure to check the gas leakage 3 Adding the refrigerant if the pipe length 5m Procedure 1 Connect the charge hose to the charging cylinder open the 2 way valve and the 3 way valve Conne...

Page 23: ...ediately and turn off the air conditioner before disconnecting the hose 7 Mount the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N m Be sure...

Page 24: ...rge the system with liquid refrigerant 6 When the electronic scale displays the proper weight refer to the gauge and the pressure of the low side disconnect the charge hose from the 3 way valve s serv...

Page 25: ...e charge hose for 5 seconds and then close it quickly 4 Set the 2 way valve to the close position 5 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0 1MPa 6 Set t...

Page 26: ...re connections for gas leakage 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2 way valve approximately 45 until t...

Page 27: ...s service port 3 Evacuation for approximately one hour Confirm that the compound meter indicates 0 1Mpa 4 Close the valve Low side on the charge set turn off the vacuum pump and confirm that the gaug...

Page 28: ...alve at the bottom of the cylinder and press the check valve on the charge set to purge the air be careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record th...

Page 29: ...pipe is connected to the outdoor side downward 2 The hard polyvinyl chloride PVC plastic pipe external diameter 26 mm sold is the market is suitable for the attached soft drain pipe 3 Please connect t...

Page 30: ...ce between the socket of the electric system and the grounded line when detected by a 500 V million ohmmeter is at least 2 million ohms If the resistance is less than the number please do not use the...

Page 31: ...he conditioned air go out from it Control Panel inserted Consists of indicators and control buttons Air Inlet Where a filter is settled absorbing the air in the room and clean it Drain Pipe From which...

Page 32: ...for cooling and heating only normal heating operation 17 30 Dry dehumidify the room air and keep the indoor temperature 17 30 Fan fan only no cooling Temp adjusting buttons warm push this button to r...

Page 33: ...el the timer setting Test Running button Push this button to make the unit run for an hour of test this function is specially designed for maintenance technicians 6 3 LED A Operation modes B Timer set...

Page 34: ...tside of the above conditions certain safety protection features may come into operation and cause the unit to function abnormally 2 Room relative humidity less than 80 If the air conditioner operates...

Page 35: ...unning if the current is over twice of the rated for 3 seconds the compressor will stop and an error code will be displayed on the outdoor PCB If the current becomes normal for 3 minutes the indoor se...

Page 36: ...low the below rules Fan below When compressor is on the outdoor fan runs all the time Fan above 18 T4 Off On 16 The others modes When compressor is on outdoor fan will follow the below rules When T4 1...

Page 37: ...turn on whether or not the heating mode the temperature was detected start to statistical time when reach the temperature condition Shut down or defrosting calculate time again 2 Accumulated time whe...

Page 38: ...d compressor is on reaches up to over 90 minutes Shut down or defrosting or T3 is over 15 C calculate time again Defrosting Action Four way valve indoor fan outdoor fan are shut down Compressor keeps...

Page 39: ...0AMN1 RB4W 60 56 54 MFE 60ARN1 RB4W 2T0043800026 60 56 54 MFE 60ARN1 RB4W 2T0043800036 62 56 50 8 3 3 Cooling mode 8 3 3 1 Conditions for the compressor and outdoor fan action MFE 60ARN1 RB4W 2T004380...

Page 40: ...er cooling mode MFE 60ARN1 RB4W 2T0043800036 5 0 4 0 High Low 2 0 Medium 3 0 The others modes 8 3 3 3 Low evaporator coil temperature T2 protection MFE 60ARN1 RB4W 2T0043800036 AC will enter T2 protec...

Page 41: ...start up Condition 3 T2CoolExit T2 On Off T2CoolIn 4 When the evaporator coil temp T2 keeps lower than T2CoolIn 4 for 8 minutes the compressor and outdoor fan will shut off When T2 is higher than T2Co...

Page 42: ...oose mode according to T1 Ts If the setting temperature is modified the machine will choose running function again The others models 8 3 5 1 Under auto mode the indoor fan is set to be auto 8 3 5 2 Wh...

Page 43: ...B4W 2T0043800036 Codes Contents P4 Protection of temperature of indoor evaporator P5 Protection of temperature of outdoor condenser P7 Compressor discharge temperature protection P9 Protection of anti...

Page 44: ...36 Type Contents LED2 green LED3 yellow LED4 red Normal Normal running Light Off Off Normal Normal standby Off Light Off Trouble Phase sequence Off Flash Off Trouble Lack of phase Off Off Flash Troubl...

Page 45: ...or service please review the following list of common problems and solutions Problem Possible Cause Solutions Unit Idleness No electric power supply Wait for power recovery Power Switch turned off Tur...

Page 46: ...ature sensor Check the connections between temperature sensor and PCB Are the connections good Correct the connections No Yes Yes Replace indoor or outdoor PCB Replace the sensor Check the resistance...

Page 47: ...rmal Possible reason 1 Air or other gas in the refrigerant 2 Heat exchanger is dirty 3 Outdoor fan or fan blade is defective 4 Outdoor unit is bad ventilation 5 Refrigerant is leakage 6 Outdoor PCB is...

Page 48: ...ent temp is low 2 The wires are loose to the temp sensor 3 The temp sensor is defective 4 The evaporator or the filter is dirty 5 System has block Low pressure protection Possible reason 1 The wires a...

Page 49: ...46 9 3 8 Overload of current...

Page 50: ...47 9 3 9 Indoor outdoor unit communication error...

Page 51: ...al minutes No Yes Change the outdoor main PCB Power on Is the error extinguished Check all the wirings between indoor and outdoor indoor PCB and outdoor PCB following the wiring diagram Are all the wi...

Page 52: ...lem remain again No Is there any leakage Especially the connection parts such as the gas valve and the liquid valve No Shut off the power supply and turn it on 5 seconds later Is it still displaying t...

Page 53: ...es it rotate properly The unit operates normally Find out the cause and have it solved For example check whether the fan is blocked or the bearing is broken Check the wires of fan motor Are all the co...

Page 54: ...other the fan motor must has problems and need to be replaced Otherwise go to step 2 2 Power on and when the unit is in standby measure the voltage of pin4 5 in feedback signal connector If the value...

Page 55: ...ssor discharge temp sensor and PCB according to wiring diagrams Method Check whether the resistance of compressor discharge temp sensor is right refer to the Appendix 2 No Yes Yes Trouble is solved No...

Page 56: ...0060 3 41 5878 37 5 87359 77 1 29078 117 0 38991 2 39 8239 38 5 62961 78 1 25423 118 0 37956 1 37 1988 39 5 39689 79 1 21330 119 0 36954 0 35 2024 40 5 17519 80 1 17393 120 0 35982 1 33 3269 41 4 9639...

Page 57: ...5 8 084 115 2 422 4 222 8 36 34 32 76 7 82 116 2 357 3 211 4 37 32 94 77 7 566 117 2 294 2 200 7 38 31 62 78 7 321 118 2 233 1 190 5 39 30 36 79 7 086 119 2 174 0 180 9 40 29 15 80 6 859 120 2 117 1 1...

Reviews:

No comments

Related manuals for MFE-60AMN1-RB4W

Brand: BAC Pages: 30

Brand: GE Pages: 20

Brand: GE Pages: 68

AM AN4PKH Series

Brand: Samsung Pages: 40

Brand: Carrier Pages: 104

Brand: Ferroli Pages: 116

Brand: Dyson Pages: 36

Brand: Zibro Pages: 2

Brand: Jocel Pages: 72

Brand: 420Purifier Pages: 2

Brand: Crosley Pages: 4

Brand: Termal Pages: 24

Brand: Daikin Pages: 60

Brand: SAMCO2 Pages: 55

Brand: Stulz Pages: 60

Brand: GE Pages: 40

Brand: GE Pages: 36

Brand: Salton Pages: 9

Brands by name

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Popular brands

Load more brands