Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Midea MSV1-09HRFN1-MT0W
Summary of Contents for Midea MSV1-09HRFN1-MT0W
-
Page 1: Service Manual
Website: www.mideaaircon.com Service Manual AIR CONDITIONER 3D DC Inverter Split Wall-Mounted Type Vertu series Model Refrigerant type Power supply MSV1-09HRFN1-MT0W R410A 230/208V, 60Hz,1Ph MSV1-12HRFN1-MT0W R410A 230/208V, 60Hz,1Ph DEC, 2009... -
Page 2: Table Of Contents
6.7 Balance refrigerant of the 2-way, 3-way valves ....................16 6.8 Evacuation................................. 17 6.9 Gas charging ..............................18 7. Operation characteristics ......................... 19 7.1 MSV1-09HRFN1-MT0W ............................19 7.2 MSV1-12HRFN1-MT0W ............................20 8. Electronic function ............................ 21 8.1 Abbreviation............................... 21 8.2 Display function ..............................21 8.3 Protection ................................ - Page 3 8.18 Follow me function ............................. 30 8.19 Outdoor chassis heating cable function ......................31 9. Troubleshooting............................32 9.1 Indoor Unit Error Display ........................... 33 9.2 Diagnosis and Solution............................34 9.3 Key parts checking............................37...
-
Page 4: Precaution
1. Precaution installation stand. 1.1 Safety Precaution It may cause injury, accident, or damage to the To prevent injury to the user or other people product. Be sure the installation area does not and property damage, the following instructions must be followed. - Page 5 It may cause corrosion on the product. Corrosion, arrives. particularly on the condenser and evaporator fins, There is risk of property damage, failure of product, could cause product malfunction or inefficient or electric shock. operation. Do not open the inlet grill of the product during operation.
- Page 6 your skin or clothes, wash it well with clean The chemical in batteries could cause burns or other health hazards water. Do not use the remote of the batteries have leaked.
-
Page 7: Function
2. Function Indoor unit Operation by remote controller Sensing by room temperature Room temperature sensor. Pipe temperature sensor. Room temperature control Maintain the room temperature in accordance w ith the setting temperature. Anti-freezing control in cooling Prevent the water being frozen on evaporator by sensing the evaporator pipe temperature in cooling mode Ionizer Time Delay Safety control... - Page 8 Outdoor unit Power relay control The unit has 3 mins delay between continuously ON/OFF operations. Low noise air flow system Bird tail propeller fan makes the outdoor unit run more quietly. Hydrophilic aluminum fin The hydrophilic fin can improve the heating efficiency at operation mode. 4 way valve control It is only operated in the heating operation mode except defrosting operation.
-
Page 9: Dimension
3. Dimension 3.1 Indoor Unit... -
Page 10: Outdoor Unit
3.2 Outdoor Unit... -
Page 11: Refrigerant Cycle Diagram
4. Refrigerant cycle diagram... -
Page 12: Wiring Diagram
5. Wiring diagram 5.1 Indoor Unit... -
Page 13: Outdoor Unit
5.2 Outdoor Unit... -
Page 14: Installation Details
6. Installation details 6.1 Tightening Connection Align the center of the pipes. Sufficiently tighten the flare nut with fingers, and then tighten it with a spanner and torque wrench as shown in Fig. Outer diam. Tightening torque(N.cm) Additional tightening torque(N.cm) Ф6.35mm 1/4”... -
Page 15: Air Purging Of The Piping And Indoor Unit
Caution: Capacity is base on standard length and maximum allowance length is base of reliability. Oil trap should be installed per 5-7 meters. 6.4 Air purging of the piping and indoor unit Required tools: Hexagonal wrench; adjustable wrench; torque wrenches, wrench to hold the joints and gas leak detector. Note: The air in the indoor unit and in the piping must be purged. - Page 16 tightened further, continue working from step (4). If the gas leaks do not stop when the connections are retightened, repair the location of the leak, discharge all of the gas through the service port, and then recharge with the specified amount of gas from a gas cylinder.
-
Page 17: Pumping Down (Re-Installation)
6.5 Pumping down (Re-installation) Procedure 1. Confirm that both the 2-way and 3-way valves are set to the opened position. Remove the valve stem caps and confirm that the valve stems are in the opened position. Be sure to use a hexagonal wrench to operate the valve stems. 2. -
Page 18: Re-Air Purging (Re-Installation)
6.6 Re-air purging (Re-installation) Procedure: 1. Confirm that both the 2-way and 3-way valves are set to the closed position. 2. Connect the charge set and a charging cylinder to the service port of the 3-way valve. Leave the valve on the charging cylinder closed. 3. -
Page 19: Balance Refrigerant Of The 2-Way, 3-Way Valves
6.7 Balance refrigerant of the 2-way, 3-way valves Procedure: 1. Confirm that both the 2-way and 3-way valves are set to the open position. 2. Connect the charge set to the 3-way valve’s service port. Leave the valve on the charge set closed. Connect the charge hose with the push pin to the service port. -
Page 20: Evacuation
6.8 Evacuation Procedure: 1. Connect the vacuum pump to the charge set’s centre hose. 2. Evacuation for approximately one hour. Confirm that the gauge needle has moved toward -0.1 Mpa (-76 cmHg) [vacuum of 4 mmHg or less]. 3. Close the valve (Low side) on the charge set, turn off the vacuum pump, and confirm that the gauge needle does not move (approximately 5 minutes after turning off the vacuum pump). -
Page 21: Gas Charging
6.9 Gas charging Procedure: 1. Connect the charge hose to the charging cylinder. Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder. 2. Purge the air from the charge hose. Open the valve 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). -
Page 22: Operation Characteristics
7. Operation characteristics 7.1 MSV1-09HRFN1-MT0W Piping Length Characteristics (Cooling) Cooling Characteristics 2.70 2.75 2.65 2.70 2.60 2.65 2.55 2.60 2.50 2.55 2.45 2.50 2.40 2.45 0.64 0.70 0.62 0.68 0.60 0.64 0.58 0.62 0.56 0.60 0.54 0.58 0.56 0.52 10 11 12 13 14... -
Page 23: Msv1-12Hrfn1-Mt0W
7.2 MSV1-12HRFN1-MT0W Piping Length Characteristics (Cooling) Cooling Characteristics 3.25 3.20 3.15 3.10 3.05 3.00 2.95 2.90 0.84 0.92 0.80 0.88 0.76 0.84 0.72 0.80 0.68 0.76 0.64 0.72 0.68 0.60 10 11 12 13 14 25 27 29 31 33 35 37 39 41 43 Outdoor Ambient Temperature ( ) Piping Length (m) -
Page 24: Electronic Function
8. Electronic function 8.1 Abbreviation T1: Indoor ambient temperature T2: Pipe temperature of indoor heat exchanger T3: Pipe temperature of outdoor heat exchanger T4: Outdoor ambient temperature 8.2 Display function 8.2.1 Icon explanation on indoor display board. OPERRATION indicator This indicator flashes after power is on and illuminates when the unit is in operation. AUTO indicator This indicator illuminates when the air conditioner is in AUTO operation. -
Page 25: Protection
8.3 Protection 8.3.1 Three Minutes Delay at restart for compressor. 8.3.2 Temperature protection of compressor top. 8.3.3 If the temperature of compressor top is too high(higher than 115℃ and the Over-load Protector is cut, the units stop. When the Over-load Protector restore and close(lower than 100℃), the compressor will restart( in this case the compressor is restricted by Three Minutes Delay protection. -
Page 26: Cooling Mode
8.5 Cooling Mode 8.5.1 The operation frequency of compressor after starting submits to following rule. -0.5 -1.0 When the machine is running and ΔT(=room temp. – setting temp.) changes, the frequency of compressor will rise or descend a grade (7 minutes after starting). After start, if ΔT stays in a zone for 3 minutes, the frequency will change as follow: Zone A : Current frequency rise a grade till the maximum grade. -
Page 27: Drying Mode
will turn into rating capacity test mode, the buzzer will make a “di” sound for 2 seconds continuously. Also, indoor fan will change to rating speed, the frequency of compressor will be fixed as rating value. Any condition of above is not satisfied, the machine can not be turned into rating capacity test mode. 2) The machine will quit from the rating capacity test mode if running for 5 hours or changing fan speed or setting temperature. - Page 28 ℃ setting fan speed low fan breeze super breeze fan stop If the compressor stops caused by room temperature rising, indoor fan will be forced to run 127 seconds with breeze. During this period, anti-cold-wind is disabled. After this, anti-cold –wind function is available.
- Page 29 8.7.4 Outdoor unit current control in heating mode. comp. pause I3HEAT freq. descends if curr. rises; I2HEAT freq. remains if curr. descends I1HEAT running normally Remark: I1HEAT I2 HEAT I3 HEAT 9K Model 5.2 A 7.0 A 8.0A 12K Model 5.2 A 7.0 A 8.0 A...
-
Page 30: Auto Mode Function
T3 rises to be higher than 12℃. T3 rises to be higher than 8℃ and remains for 80 seconds. The machine has run for 10 minutes in defrosting. 8.7.7 Defrosting action. compressor 4-way valve outdoor fan indoor fan indoor fan breeze 10s no longer than 10 minutes 8.7.8 Rating capacity test function. -
Page 31: Forced Operation Function
In auto mode, the machine will choose cooling, heating or fan-only mode according to ΔT(ΔT =T1-Ts). ΔT=T1-Ts Running mode Cooling ΔT＞1℃ Fan-only -1≤ΔT≤1℃ Heating ΔT＜-1℃ 8.8.2 Indoor fan will choose auto speed of relevant mode. 8.8.3 If the machine switches mode between heating and cooling, compressor will keep stopping for 15 minutes and then rechoose mode according to ΔT. -
Page 32: Timer Function
℃ ℃ high high Outdoor fan action in heating mode Outdoor fan action in cooling & drying mode (including heating in auto mode). (including cooling in auto & forced mode). 8.11.2 Outdoor fan action in cooling & drying mode(including cooling in auto & forced mode). Please refer to the pic. -
Page 33: Automatic Panel Function
8.15 Automatic panel function The automatic panel is forced to turn to the closing direction at an angle of 50°when the unit is getting through the power, and this action is not affected by any signal from remote controller. When the unit is turned on, the panel is opened automatically at an angle of 50°, then the horizontal louver will be opened. -
Page 34: Outdoor Chassis Heating Cable Function
When the follow me function is available, the PCB will control the unit according to the room temperature from the remote controller and the setting temperature, and the action of compressor is as following: At cooling mode, if TA＜TS, compressor is off; If TA≥TS, compressor is on. At heating mode, if TA＞TS, compressor is off;... -
Page 35: Troubleshooting
9. Troubleshooting Safety Because of there are capacitors in PCB and relative circuit in outdoor unit, even shut down the power supply, electricity power still are kept in capacitors, do not forget to discharge the electricity power in capacitor. Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) Bulb (25-40W) -
Page 36: Indoor Unit Error Display
9.1 Indoor Unit Error Display Display LED STATUS EEPROM parameter error Indoor / outdoor units communication protection Zero-crossing signal error Indoor fan speed out of control Open or short circuit of outdoor temperature sensor Open or short circuit of room or evaporator temperature sensor Outdoor fan speed out of control IGBT over-strong current protection Over voltage or too low voltage protection... -
Page 37: Diagnosis And Solution
9.2 Diagnosis and Solution 9.2.1 E0(EEPROM parameter error) error diagnosis and solution Circuit or software error on indoor PCB Replace indoor PCB 9.2.2 E1(indoor / outdoor units communication protection) error diagnosis and solution Disconnect the power supply, after 1 minute, connect the power supply, turn on the unit with remote controller Does the unit work normally? - Page 38 9.2.4 E3(indoor fan speed out of control) diagnosis and solution Is the indoor fan motor Repair the connector and connector and connection reconnect good? Is voltage being applied to the fan motor right? Indoor PCB is defective. Replace the indoor PCB. Replace the indoor fan motor 9.2.5 E5(Open or short circuit of outdoor temperature sensor) diagnosis and solution.
- Page 39 9.2.8 P1(over voltage or too low voltage protection) diagnosis and solution. Be sure the power supply is Is the power supply good? normal when using the units Replace the outdoor e-box. 9.2.9 P2(temperature protection of compressor top) diagnosis and solution. Is the connection Does compressor Reconnect and retest.
-
Page 40: Key Parts Checking
9.3 Key parts checking. 9.3.1. Compressor checking (Model: DA108X1C-20FZ3). Measure the resistance value of each winding by using the multi-meter. Position Resistance Value 0.71Ω Blue - Red Blue - Black Red - Blue (20℃) 9.3.2 Step Motor (Model: MP2835T). Measure the resistance value of each winding by using the multi-meter. Position Resistance Value Blue - Red... - Page 41 9.3.3 Temperature Sensors. Room temp.(T1) sensor, Indoor coil temp.(T2) sensor, Outdoor coil temp.(T3) sensor, Outdoor ambient temp.(T4) sensor, Compressor exhaust temp.(Te) sensor. Measure the resistance value of each winding by using the multi-meter. Some frequently-used R-T data for T1,T2,T3 and T4 sensor: Temperature ( ) Resistance Value (KΩ) 26.9...
Need help?
Do you have a question about the MSV1-09HRFN1-MT0W and is the answer not in the manual?
Questions and answers