North American HVAC Products Vertu MSV1-09HRFN1-MT0W Service Manual

North American HVAC Products Vertu MSV1-09HRFN1-MT0W Service Manual

Dc inverter single zone split wall-mounted type vertu series

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NORTH AMERICAN HVAC PRODUCTS LTD
Tel: 604-4308496

Service Manual

Model
MSV1-09HRFN1-MT0W
MSV1-12HRFN1-MT0W
Fax: 1-866-9034371
DC Inverter Single Zone
Split Wall-Mounted Type
Vertu series
Refrigerant type
R410A
R410A
www.northamericanhvac.com
Power supply
230/208V, 60Hz,1Ph
230/208V, 60Hz,1Ph

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Summary of Contents for North American HVAC Products Vertu MSV1-09HRFN1-MT0W

  • Page 1: Service Manual

    NORTH AMERICAN HVAC PRODUCTS LTD Tel: 604-4308496 Fax: 1-866-9034371 www.northamericanhvac.com Service Manual DC Inverter Single Zone 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...
  • 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 ..............................
  • Page 3 8.19 Outdoor chassis heating cable function ......................30 9. Troubleshooting ............................31 9.1 Indoor Unit Error Display ........................... 32 9.2 Diagnosis and Solution ............................33 9.3 Key parts checking............................36...
  • 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 water. The chemical in batteries could cause burns or Do not use the remote of the batteries have other health hazards 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

    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 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 Piping Length (m) Outdoor Ambient Temperature (℃)
  • 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

    8.5.6 Indoor fan operation rule. In cooling mode, indoor fan runs all the time and the speed can be selected as high, medium, low and auto. Auto fan in cooling mode acts as follow: ℃ high medium 8.5.7 Condenser high temperature protection function(in cooling and drying mode) If T3>60℃...
  • Page 28 8.7.2 Indoor fan speed can be set as high, medium, low or auto grade, but anti-cold-wind function is preferential. Auto fan action in heating mode. ℃ medium high 8.7.3 The operation frequency of compressor after starting submits to following rule: ℃...
  • Page 29 8.7.6 Defrosting mode. Condition of defrosting. Condition 1: If T4>0℃, When the units are running, if the following two items are satisfied the units start defrosting: a) The units runs with T3<3℃ for 40 minutes and T3 keeps lower than -6℃ for more than 3 minutes.
  • Page 30: Auto Mode Function

    rating value. Any condition of above is not satisfied, the machine can not be turned into rating capacity test mode. The machine will quit from the rating capacity test mode if running for 5 hours or changing fan speed or setting temperature. Turbo function in heating mode.
  • Page 31: Two Speeds Outdoor Fan Function

    8.11 Two speeds outdoor fan function 8.11.1 Outdoor fan action in heating mode(including heating in auto mode). ℃ ℃ high high Outdoor fan action in heating mode Outdoor fan action in cooling & drying mode (including heating in auto mode). (including cooling in auto &...
  • Page 32: 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 33: Outdoor Chassis Heating Cable Function

    At heating mode, if TA>TS, compressor is off; If TA≤TS, compressor is on. The PCB will take action to the mode change information from remote controller signal, but it will not affected by the setting temperature. When the unit is running with follow me function, if the PCB doesn’t receive any signal from remote controller for 7 minutes or pressing FOLLOW ME button again, the follow me function will be turned off automatically, and the temperature collection function of room temperature sensor will be available, the PCB will control the unit according to the room temperature detected from its own room temperature sensor and setting temperature.
  • Page 34: 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 35: 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 36: 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 37 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 38 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 39: 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 Blue - Red 0.71Ω Blue - Black (20℃) Red - Blue 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 40 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 (℃...

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Vertu msv1-12hrfn1-mt0w

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