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  4. R ON-OFF series
  5. User Manual

Kaisai R ON-OFF series User Manual

Manual is about: split wall-mounted type

Summary of R ON-OFF series

  • Page 1

    Split wall-mounted type r on-off series.

  • Page 2: Contents

    Contents 1. Precaution .................................................................................................................................................... 1 1.1 safety precaution ...........................................................................................................

  • Page 3

    1 1. Precaution 1.1 safety precaution to prevent injury to the user or other people and property damage, the following instructions must be followed. Incorrect operation due to ignoring instruction will cause harm or damage. Before service unit, be sure to read this service manual at first. 1.2 warn...

  • Page 4

    2 condenser and evaporator. For installation, always contact the dealer or an authorized service center. There is risk of fire, electric shock, explosion, or injury. Do not install the product on a defective installation stand. It may cause injury, accident, or damage to the product. Be sure the ins...

  • Page 5

    3 there is risk of explosion or fire. If strange sounds, or small or smoke comes from product. Turn the breaker off or disconnect the power supply cable. There is risk of electric shock or fire. Stop operation and close the window in storm or hurricane. If possible, remove the product from the windo...

  • Page 6

    4 it can avoid vibration of water leakage. Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods. It may cause a problem for your neighbors. Use two or more people to lift and transport the product. Avoid personal injury. Do not install the produc...

  • Page 7

    5 operated. There are sharp and moving parts that could cause personal injury. Do not drink the water drained from the product. It is not sanitary could cause serious health issues. Use a firm stool or ladder when cleaning or maintaining the product. Be careful and avoid personal injury. Replace the...

  • Page 8

    6 2. Function.

  • Page 9

    7 maintain the room temperature in accordance with the setting temperature. The mode can be change by the room temperature. The louver can be set at the desired position or swing up and down automatically the function is usually used in rainy days in springtime or damp areas. Turbo, high, med, low, ...

  • Page 10

    8 it protects the valves and prevents water from dripping. Outdoor units power relay control valve protection cover made from electrolytic zinc steel sheet and anti-rust coated components. Low noise air flow system anti-rust cabinet.

  • Page 11

    9 3. Dimension 3.1 indoor units figure 1: figure 2:.

  • Page 12

    10 figure 3: figure models w d h figure 1 7k,9k 710 189 250 figure 2 18k 930 198 275 figure 3 21k,24k 1036 230 315.

  • Page 13

    11 3.2 outdoor units model w h d b c f 7k 685 430 260 460 276 57 9k 700 535 235 458 250 60 18k 760 590 285 530 290 63 21k(mop-21h-qb6w) 820 330 595 523 340 50 21k,24k 845 695 335 560 335 73.

  • Page 14

    12 4. Refrigerant cycle diagram for heat pump models:.

  • Page 15

    13 5. Wiring diagram 5.1 indoor units ksr1-07hrn1-qc2(a) ksr1-09hrn1-qc2(a) ksr1-18hrn1-qb8.

  • Page 16

    14 ksr1-21hrn1-qb8w ksr1-21cr-qb6w ksr1-21hr-qb6w ksr1-24hrn1-qb8w.

  • Page 17

    15 5.2 outdoor units kok1-07hn1-qc2 koa1-09hn1-qc2.

  • Page 18

    16 koe-18hn1-qb8.

  • Page 19

    17 kof-21hn1-qb8w k0f2-21c-qb6w kop-21h-qb6w.

  • Page 20

    18 kof2-24hn1-qb8w.

  • Page 21

    19 6. Installation details 6.1 wrench torque sheet for installation outside diameter torque additional tightening torque mm inch n.Cm n.Cm Ф6.35 1/4 1500 (153kgf.Cm) 1600 (163kgf.Cm) Ф9.52 3/8 2500 (255kgf.Cm) 2600 (265kgf.Cm) Ф12.7 1/2 3500 (357kgf.Cm) 3600 (367kgf.Cm) Ф16 5/8 4500 (459kgf.Cm) 4700...

  • Page 22

    20 6.3 pipe length and the elevation the pipe length and refrigerant amount: model connective pipe length air purging additional amount of refrigerant all less than 5m use vacuum pump ------------------ 7k,9k,18k more than 5m use vacuum pump (pipe length – 5) × 30g/m 21k,24k more than 5m use vacuum ...

  • Page 23

    21 6.4 air purging with vacuum pump air and moisture in the refrigerant system have undesirable effects as below: ● pressure in the system rises. ● operating current rises. ● cooling or heating efficiency drops. ● moisture in the refrigerant circuit may freeze and block capillary tubing. ● water may...

  • Page 24

    22 6. Turn the stem of the hi valve about 45°counterclockwise for 6 or 7seconds after the gas coming out, then tighten the flare nut again. Make sure the pressure display in the pressure indicator is a little higher than the atmosphere pressure. 7. Remove the charge hose from the lo pressure charge ...

  • Page 25

    23 connect the charge hose with the push pin to the gas service port. 4. Air purging of the charge hose. Open the low-pressure valve on the charge set slightly to purge air from the charge hose. 5. Set the 2-way valve to the close position. 6. Operate the air conditioner at the cooling cycle and sto...

  • Page 26

    24 3. Air purging. Open the valves on the charging cylinder and the charge set. Purge the air by loosening the flare nut on the 2-way valve approximately 45’ for 3 seconds then closing it for 1 minute; repeat 3 times. After purging the air, use a torque wrench to tighten the flare nut to on the 2-wa...

  • Page 27

    25 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. 3. Open the valves (low side) on the charg...

  • Page 28

    26 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. If the refrigerant is r410a, make the cylinder bottom up to ensure liquid charge. 2. Purge the air from ...

  • Page 29

    27 7. Operation characteristics caution: 1. If air conditioner is used outside 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 in excess of this fig...

  • Page 30

    28 8. Electronic function 8.1 abbreviation t1: indoor ambient temperature t2: coil temperature of indoor heat exchanger t3: coil temperature of outdoor heat exchanger t4: outdoor ambient temperature t5: compressor discharge temperature 8.2 display function 8.2.1 icon explanation on indoor display bo...

  • Page 31

    29 8.3 main protection 8.3.1 time delay at restart for compressor. 8.3.2 fan speed is out of control. (only for 7k,9k,18k models) ----when indoor fan speed keeps too low or too high for certain time, the unit will stop and the led will display the failure 8.3.3 current protection i3sec i5min a b c r...

  • Page 32

    30 8.4 operation modes and functions 8.4.1 fan mode. (1) outdoor fan and compressor stop. (2) temperature setting function is disabled, and no setting temperature is displayed. (3) indoor fan can be set to high/med/low/auto. (4) the louver operates same as in cooling mode. (5) auto fan: for 7k,9k,18...

  • Page 33

    31 8.4.2 cooling mode 8.4.2.1 compressor running rules: once the compressor starts up, it will follow the below rules: when indoor room temp.T1 is lower than tn, the compressor and outdoor fan will shut off. When t1 is higher than tm, the compressor and outdoor fan will start up. Tm=ts+1, tn=ts. 8.4...

  • Page 34

    32 when the evaporator coil temp.T2 keeps lower than te5 for 5 minutes(4 minutes for 21k,24k models), the compressor and outdoor fan will shut off. When t2 is higher than te6, the compressor and outdoor fan will restart up. While te5=4℃, te 6=10℃ for ksr1-07hrn1-qc2(a), ksr1-09hrn1-qc2(a) models; te...

  • Page 35

    33 8.4.3.2 outdoor fan running rules: the outdoor units have single fan speed. The outdoor fan will run following the compressor except when ac is in evaporator high temp.Protection in heating mode , condenser high temp.Protection in cooling mode ,defrosting mode and the current protection. 8.4.3.3 ...

  • Page 36

    34 while te1=28 ℃,te 2=32℃,te 3=30℃,te 4=26℃ for 7k,9k models. Te1=34 ℃,te2=36℃,te3=3 0 ℃,te 4=20℃ for 18k model. Te1=25 ℃,te2=32℃,te3=30℃,te 4=20℃ for 21k,24k models. Auto fan action: when t1-ts>2℃,the indoor fan will run at low speed. When t1-ts ≤0℃, the indoor fan will run at medium speed. 8.4.3....

  • Page 37

    35 (2) after the last defrosting, the time that the outdoor fan is off but the compressor is on in high t2 protection cumulates up to 90 minutes. Condition of ending defrosting: if any one of the following items is satisfied, the defrosting will terminate and the machine will turn to normal heating ...

  • Page 38

    36 for 21k,24k models: condition of defrosting: ac will enter defrosting mode if any of the following items is satisfied. (1) when t3＜tc1℃, if the compressor keeps running over 40 minutes and t3＜tc3℃ for 3 m inutes. While tc1= 0℃, tc3=－3℃. (2) after the last defrosting, the time that the outdoor fan...

  • Page 39

    37 for 21k,24k models: while te7=63℃,te8=57℃,te9=50℃ for ksr1-21hrn1-qb8w model. Te7=63℃,te8=54℃,te9=50℃ for ksr1-21cr-qb6w , ksr1-21hr-qb6w ksr1-24hrn1-qb8w models..

  • Page 40

    38 8.4.4 auto-mode the machine will choose cooling, heating or fan- only mode according to Δt (Δt =t1-ts). For 7k,9k,18k models: Δt=t1-ts running mode Δt＞2℃ cooling - 1≤Δt≤2℃ fan-only Δt heating(for cooling only models,they will run at fan-only mode) for 21k,24k models: Δt=t1-ts running mode Δt＞2 ℃ ...

  • Page 41

    39 8.4.5.2 in drying mode, if room temperature is lower than 10 ℃, the indoor fan will run at breeze while the compressor and outdoor fan will stop and not resume until room temperature exceeds 13 ℃. 8.4.5.3 system protection is active in this mode. For 21k,24k models: 8.4.5.4 the indoor fan will ke...

  • Page 42

    40 suppose users set the “timer off” function and ac is off now, the ac will keep the current running mode and then turn off when reaching the setting time.For 21k,24k models, the timer function will change the ac current operation mode. Suppose users set the “timer off” function and ac is off now, ...

  • Page 43

    41 indoor fan restarts after malfunctions being eliminated and anti-cold-wind being released, ionizer will be available again..

  • Page 44

    42 9. Troubleshooting 9.1 indoor unit error display for 7k,9k,18k models: operation lamp timer lamp failure ☆ x indoor fan speed has been out of control ☆ o the t1 or t2 sensor is open circuit or short circuit x ☆ over current protection occurs 4 times. O ☆ eeprom error ☆ ☆ zero crossing detection e...

  • Page 45

    43 9.2 diagnosis and solution 9.2.1 indoor fan speed out of control diagnosis is the indoor fan motor connector and connection good? The unit does not work normally turn off the unit, rotate the cross fan.Does it rotate freely? No disassemble the connection between fan and motor, check if the bearin...

  • Page 46

    44 9.2.2 open or short circuit of temperature sensor diagnosis and solution. 9.2.3 over current protection occurs 4 times. Current protection check if the voltage of power supply is too low? The power supply is problematic check if the operation condition is normal, especially the outdoor unit? Turn...

  • Page 47

    45 9.2.4 eeprom parameter error diagnosis and solution 9.2.5 zero crossing detection error when such failure occurs, the main control board must have fault. Replace indoor pcb shut off the power supply and turn on it 5s later the problem comes out again is the eeprom chip plugged in indoor pcb well?...

  • Page 48

    46 9.2.6 indoor / outdoor units communication error no reconnect and retest replace outdoor e-box. Yes yes no correct the connection yes the unit does not work normally. Check the wiring between indoor and outdoor unit. Is the connection of l, n, s and gnd good? No is the led4(red) bright and led1(y...

  • Page 49

    47 9.2.7 outdoor units protection outdoor units protection whether the outdoor unit is power on measure whether the voltage of the communication line’s red and black end between the indoor and outdoor unit is +5v replace indoor pcb replace the outdoor unit board no yes check the indoor unit main boa...