Related Manuals for Carrier 38LUVH025N
Summary of Contents for Carrier 38LUVH025N
- Page 1 Air Conditioner Service Manual DC Inverter Hi-Wall Model Discription Refrigerant type Power supply 42/38LUVH025N 9K HP R410A 1Ph,220-240V,50Hz 42/38LUVH035N 12K HP R410A 1Ph,220-240V,50Hz 42/38LUVH045N 18K HP R410A 1Ph,220-240V,50Hz...
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Page 2: Table Of Contents
6.7 Balance refrigerant of the 2-way, 3-way valves ................17 6.8 Evacuation ............................18 6.9 Gas charging............................ 19 7. Capacity table ............................20 7.1 42/38LUVH025N ..........................20 7.2 42/38LUVH035N ..........................21 7.3 42/38LUVH045N ..........................22 8.Electronic function ............................. 23 8.1 Abbreviation ............................. 23 8.2 Display function.......................... - Page 3 8.14 Auto-Restart function ........................31 8.15 Ionizer/Plasma dust collector function(optional) ................31 8.16 Outdoor chassis heating cable (optional) ..................31 9. Troubleshooting ............................32 9.1 Indoor Unit Error Display ......................... 33 9.2 Diagnosis and Solution ........................33 9.3 Key parts checking.......................... 38...
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Page 4: Precaution
1. Precaution There is risk of fire, electric shock, explosion, or 1.1 Safety Precaution injury. To prevent injury to the user or other Do not install the product on a people and property damage, the following defective installation stand. It may cause injury, accident, or damage to the instructions must be followed. - Page 5 To avoid vibration of water leakage. If strange sounds, or small or smoke Do not install the product where the comes from product. Turn the breaker off or noise or hot air from the outdoor unit could disconnect the power supply cable. damage the neighborhoods.
- Page 6 There are sharp and moving parts that could There is risk of fire or explosion. cause personal injury. Do not recharge or disassemble the Do not drink the water drained from the batteries. Do not dispose of batteries in a fire. product.
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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 With 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 (Optional) - 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.
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Page 9: Dimension
3. Dimension 3.1 Indoor Unit 42LUVH025N 42LUVH035N 42LUVH045N... -
Page 10: Outdoor Unit
3.2 Outdoor Unit 38LUVH025N 38LUVH035N 38LUVH045N... -
Page 11: Refrigerant Cycle Diagram
4. Refrigerant cycle diagram... -
Page 12: Wiring Diagram
5. Wiring diagram 5.1 Indoor Unit 42LUVH025N 42LUVH035N... -
Page 13: 42Luvh045N
42LUVH045N 5.2 Outdoor Unit 38LUVH025N 38LUVH035N... -
Page 14: 38Luvh045N
38LUVH045N... -
Page 15: Installation Details
6. Installation details 6.1 Wrench torque sheet for installation Outside diameter Torque inch Kgf.m Ф6.35 Ф9.52 Ф12.7 6.2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet. Grade Unit 6.3 Pipe length and the elevation Standard Min. -
Page 16: Air Purging Of The Piping And Indoor Unit
Caution: Oil Traps: Oil traps must be fitted to vertical suction risers where outdoor unit is above indoor unit. Fit a trap at the bottom of the vertical rise and then at 5m intervals. If the outdoor unit is installed below the indoor unit – no trap is required in such installation. If the units are installed at the same level –... - Page 17 Procedure Caution: 1. Recheck the piping connections. If gas leakage is discovered in step (3) above, take 2. Open the valve stem of the 2-way valve the following measures. counterclockwise approximately 90’, wait 10 If the leaks stop when the piping connections are seconds, and then set it to closed position.
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Page 18: 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 19: 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 20: 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 21: 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 22: 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 23: Capacity Table
7. Capacity table 7.1 42/38LUVH025N SUMMER OUTDOOR TEMPERATURE DRY Indoor 25º C 30º C 35º C 40º C 45º C 50º C Conditions Total capacity (W) 2346 2231 2075 1906 1750 1632 21º C D 15º C W Sensitive capacity (W) -
Page 24: 42/38Luvh035N
7.2 42/38LUVH035N SUMMER OUTDOOR TEMPERATURE DRY Indoor 25º C 30º C 35º C 40º C 45º C 50º C Conditions 3050 2900 2698 2478 2275 2122 Total capacity (W) 21º C D 2394 2321 2220 2107 1999 1913 15º C W Sensitive capacity (W) Input (W). -
Page 25: 42/38Luvh045N
7.3 42/38LUVH045N SUMMER OUTDOOR TEMPERATURE DRY Indoor 25º C 30º C 35º C 40º C 45º C 50º C Conditions 4589 4363 4059 3729 3423 3193 Total capacity (W) 21º C D 3601 3492 3340 3169 3007 2878 15º C W Sensitive capacity (W) Input (W). -
Page 26: 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. 42VHC109713G 42VHC112713G 42VHC118713G ① Auto indicator This indicator illuminates when the air conditioner is in AUTO operation. -
Page 27: Fan-Only Mode
If the exhaust temp. of compressor is higher than 115℃ and lasts for 5 seconds, the compressor stops and does not resume until the exhaust temp. is lower than 90℃. 8.3.5 Inverter module Protection, Inverter module Protection itself has a protection function against current, voltage and temperature. -
Page 28: Cooling Mode
8.5 Cooling Mode 8.5.1 The After start the operation frequency of compressor 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 29: Drying Mode
8.5.5Turbo function(press the “TURBO” button on remote controller) Elevate current frequency to a higher grade. Indoor fan turns to turbo speed. After running for 30 minutes the machine will turn back to previous setting mode. 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. - Page 30 If the machine runs in rating capacity test mode, indoor fan runs with rating speed, and anti-cold-wind is disabled. 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. ℃...
- Page 31 Outdoor unit current control in heating mode. comp. pause I3HEAT freq. descends if curr. rises; I2HEAT freq. remains if curr. descends I1HEAT running normally 8.7.5 Indoor heat exchanger high temperature protection. If T2＞60℃, the compressor will stop and not resume until T2＜48℃. 8.7.6 Defrosting mode.
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Page 32: Auto Mode Function
8.7.7 Defrosting action. compressor 4-way valve outdoor fan indoor fan indoor fan breeze no longer than 10 minutes 8.7.8 Rating capacity test function. Set the indoor unit with remote controller as: high fan, 30℃ in heating mode, then press “TURBO” button on controller 6 times or more within 10 seconds(make sure indoor unit receives these signals), the machine will turn into rating capacity test mode, the buzzer will make a “di”... -
Page 33: Forced Operation Function
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. 8.8.4 If the setting temperature is modified, the machine will rechoose running function. 8.9 Forced operation function 8.9.1 Forced cooling and auto function can carry out with a touch button. -
Page 34: Timer Function
8.12 Timer function 8.12.1 Timing range is 24 hours, and the minimum resolution is 15 minutes. 8.12.2 Timer on. After turning off, the machine will turn on automatically when reaching the setting time. 8.12.3 Timer off. After turning on, the machine will turn off automatically when reaching the setting time. 8.12.4 Timer on/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 Fan speed out of control Open or short circuit of outdoor temperature sensor Open or short circuit of room or evaporator temperature sensor Outdoor unit fan protection IGBT over-strong current protection Over voltage or too low voltage protection... - Page 37 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 Reconnect and retest Does the unit work again normally? Check wiring between indoor Replace...
- Page 38 9.2.3 E2(zero-crossing signal error) diagnosis and solution Is power supply and Be sure the power supply connection is good and correct the connectors good? connection Indoor PCB is defective. Replace the indoor PCB. 9.2.4 E3(indoor fan speed out of control) diagnosis and solution Is the indoor fan Repair the connector motor connector and...
- Page 39 9.2.6 E6(open or short circuit of room or evaporator temperature sensor) diagnosis and solution. indoor temperature Repair the connector evaporator sensor and reconnect connector connection good? Replace the sensor Replace the.indoor check display again? 9.2.7 P0(IGBT over-strong current protection) diagnosis and solution. Is all connections on between Repair or correct the...
- Page 40 9.2.9 P2(temperature protection of compressor top) diagnosis and solution. Does Reconnect and retest. connection compressor good? operate? protector Replace the protector. refrigerant normal? circulation volume normal? Check the outdoor Charge refrigerant main PCB. Is there some problem? Replace the outdoor abnormality PCB.
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Page 41: 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 Model: DA130S1C-20FZ Measure the resistance value of each winding by using the multi-meter. Position Resistance Value Blue - Red... - Page 42 Model: YDK50-6C Measure the resistance value of each winding by using the multi-meter. Position Resistance Value Black - Red 114Ω (20℃) 188Ω (20℃) Blue - Red 172Ω (20℃) Yellow - Blue Indoor Fan Motor Model: RPG20D Measure the resistance value of each winding by using the multi-meter. Position Resistance Value 400Ω±8% (20℃)
- Page 43 9.3.5 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...