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11.2.5 Open circuit or short circuit of temperature sensor diagnosis and solution
(E4/E5/F1/F2/F3)

Error Code

E4/E5/F1/F2/F3

Malfunction decision
conditions

If the sampling voltage is lower than 0.06V or higher than 4.94V,
the LED will display the failure.

Supposed causes

●

Wiring mistake

●

Sensor faulty

●

PCB faulty

Trouble shooting:

Check the connections
between temperature
sensor and main PCB.
Are the connections
good?

Correct the connections.

Yes

Replace indoor or

outdoor main PCB.

Replace the sensor

Check the resistance value
of the sensor, is it normal?

Содержание P8MVI32-09WiFi

Страница 1: ...SERVICE MANUAL ENGLISH WALL MOUNTED UNIT AIR CONDITIONING SYSTEMS MODELS P8MVI32 09WiFi P8MVO32 09 P8MVI32 12WiFi P8MVO32 12 P8MVI32 18WiFi P8MVO32 18 P8MVI32 24WiFi P8MVO32 24...

Страница 2: ......

Страница 3: ...he system for many years 22 6 6 Re installation while the indoor unit need to be repaired 22 6 7 Re installation while the outdoor unit need to be repaired 25 7 Disassemble Guide 26 8 Wiring Diagram 3...

Страница 4: ...edicated circuit and breaker Improper wiring or installation may cause fore or electric shock n Use the correctly rated breaker of fuse There is risk of fire or electric shock n Do not modify or exten...

Страница 5: ...roduct There is risk of fire electric shock or product damage n Ventilate the product from time to time when operating it together with a stove etc There is risk of fire or electric shock n Turn the m...

Страница 6: ...ix old and new batteries or different types of batteries There is risk of fire or explosion n Do not recharge or disassemble the batteries Do not dispose of batteries in a fire They may burn of explod...

Страница 7: ...l continue during the period that the work is carried out The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere 8 Checks to the refrige...

Страница 8: ...age to seals incorrect fitting of glands etc l Ensure that apparatus is mounted securely l Ensure that seals or sealing materials have not degraded such that they no longer serve the purpose of preven...

Страница 9: ...lity is a consideration The following procedure shall be adhered to l remove refrigerant l purge the circuit with inert gas l evacuate l purge again with inert gas l open the circuit by cutting or bra...

Страница 10: ...takes place g Start the recovery machine and operate in accordance with manufacturer s instructions h Do not overfill cylinders No more than 80 volume liquid charge i Do not exceed the maximum working...

Страница 11: ...nition in the event of a refrigerant release Consult manufacturer if in doubt l The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder and the relevan...

Страница 12: ...l list Model Names of Indoor Outdoor Units 3D inverter Capacity Indoor units Outdoor units 9k P8MVI32 09WiFi P8MVO32 09 12k P8MVI32 12WiFi P8MVO32 12 18k P8MVI32 18WiFi P8MVO32 18 24k P8MVI32 24WiFi P...

Страница 13: ...11 4 Dimension 4 1 Indoor Unit Model W D H P8MVI32 09WiFi 717 193 302 P8MVI32 12WiFi 805 193 302 P8MVI32 18WiFi 964 222 325 P8MVI32 24WiFi 1106 232 342...

Страница 14: ...12 For P8MVI32 09WiFi For P8MVI32 09WiFi P8MVO32 09 P8MVI32 12WiFi P8MVO32 12...

Страница 15: ...13 For P8MVI32 18WiFi P8MVO32 18 For P8MVI32 24WiFi P8MVO32 24...

Страница 16: ...14 4 2 Outdoor Unit More than 30cm More than 60cm More than 200cm More than 30cm More than 60cm Service space Fence or obstacles...

Страница 17: ...15 For P8MVO32 09 P8MVO32 12 487 W1 70 W2 298 555 300 D H 12 60 93 H1 H2 D1 770 W 779 W3 322 D2 25 B1 90 B2 61 5 A2 12 A1 R 6 286 D3...

Страница 18: ...16 For P8MVO32 09 P8MVO32 12 P8MVO32 18 800 W 514 W1 554 60 85 5 340 12 0 311 815 W3 365 333 D 70 W2 H H1 H2 D1 D2 D3 62 B1 106 B2 20 A1 R20 R6 61 6 A2...

Страница 19: ...17 For P8MVO32 24...

Страница 20: ...IQUID SIDE GAS SIDE HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER Compressor 2 WAY VALVE 3 WAY VALVE 4 WAY VALVE COOLING HEATING T2 Evaporator temp sensor T1 Room temp sensor T3 Condenser temp sens...

Страница 21: ...4 6500 663kgf cm 6700 683kgf cm 6 2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet Rated current of appliance Nominal cross section...

Страница 22: ...12 P8MVI32 18WiFi P8MVO32 18 1 2 12 7 1 4 6 35 5 20 30 12 P8MVI32 24WiFi P8MVO32 24 5 8 15 9 3 8 9 52 5 25 50 24 Caution For the R290 or R32 refrigerant model make sure the conditions within the area...

Страница 23: ...with the push pin of handle lo to the 3 way valves gas service port 3 Connect the charge hose of handle hi connection to the vacuum pump 4 Fully open the handle Lo of the manifold valve 5 Operate the...

Страница 24: ...ck for gas leakage 6 5 Adding the refrigerant after running the system for many years Procedure 1 Connect the charge hose to the 3 way service port open the 2 way valve and the 3 way valve Connect the...

Страница 25: ...rvice port cap to a torque of 18N m Be sure to check for gas leakage 2 Air purging with vacuum pump 1 Completely tighten the flare nuts of the indoor and outdoor units confirm that both the 2 way and...

Страница 26: ...Make sure the pressure display in the pressure indicator is a little higher than the atmosphere pressure Then remove the charge hose from the 3 way valve 8 Fully open the 2 way valve and 3 way valve a...

Страница 27: ...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 3 Put the charging cylinder ont...

Страница 28: ...little to loosen the fastener Step2 Pull the filter gently along the horizontal direction Step3 Pull out the filter 7 2 How to Remove the horizontal louver Step1 Open the horizontal louver push the lo...

Страница 29: ...move the two screws Step2 Open the panel assembly move the slider to fix the panel Step3 Press the locker A and B to lose the indoor from the installation plate Step4 Unfold the supporter of Installat...

Страница 30: ...panel assembly Step1 Open the screw caps A and B remove the two screws Step2 Open the panel assembly loosen the display board connector Step3 Pull the panel assembly along the direction indicated in...

Страница 31: ...he panel to remove the PCB in order to show clearly inside these pictures are without panel 7 6 How to Remove the Electrical control box Step1 Remove screw A B C pull out the coil temperature sensor D...

Страница 32: ...screws A B C D E remove support part F and G Step3 Open the E box to lose the fan motor and louver motor connectors from the PCB Step4 Press the locker H and I to lose the indoor from the installatio...

Страница 33: ...24K indoor unit is relatively large and heavy it must have two persons to implement the following steps Step1 Remove the Electric control box Step2 Remove the Chassis assembly Step3 Unfold the Pipe c...

Страница 34: ...32 8 Wiring Diagram 8 1 Indoor Unit P8MVI32 09WiFi P8MVI32 12WiFi P8MVI32 18WiFi P8MVI32 24WiFi...

Страница 35: ...33 8 2 Outdoor Unit P8MVO32 09 P8MVO32 12 P8MVO32 18 P8MVO32 24...

Страница 36: ...ditioner is used beyond the above conditions certain safety protection features may come into operation and cause the unit to operate abnormally 2 The room relative humidity should be less than 80 If...

Страница 37: ...Turbo or Silence feature is activated Dispalys for three seconds when Timer OFF is set Dispalys for three seconds when Fresh Swing Turbo or Silence feature is cancelled Dispalys under deforsting oper...

Страница 38: ...l be active immediately and the indoor fan will open 7s later If the unit runs in heating mode the indoor fan will be also controlled by anti cold wind function 10 3 6 Compressor preheating functions...

Страница 39: ...ll be activated and the compressor will stop 10 4 2 2 Outdoor fan running rules The outdoor unit will be run at different fan speed according to T4 For different outdoor units the fan speeds are diffe...

Страница 40: ...nning rules When T1 Ts T the compressor will stop when T1 TS T 1 the compressor will be on T is the programmed parameter of temperature compensation When the AC run in mute mode the compressor will ru...

Страница 41: ...running time During the defrosting mode the compressor keep running indoor and outdoor motor will stop defrost lamp of the indoor unit will be lighted will be displayed If any one of the following it...

Страница 42: ...emperature Forced auto mode The action of forced auto mode is the same as normal auto mode with 24 setting temperature When AC receives signals such as switch on switch off timer on timer off mode set...

Страница 43: ...his indicates the follow me function is initiated But when the indoor PCB receives signal which sent from remote controller every 3 minutes the buzzer will not respond When the unit is running with fo...

Страница 44: ...42 For AE series On off port XYE port WIFI wired controller 5 cored can be chosen at the same time Non polar wired controller 4 cored wired controller and central controller are mutually exclusive...

Страница 45: ...ry information Displaying code Meaning T1 T1 Indoor room temperature T2 T2 Indoor coil mid temperature T3 T3 Outdoor coil temperature T4 T4 Outdoor temperature T2B Tb Indoor coil outlet temperature TP...

Страница 46: ...b1 b9 110 111 119 c0 c1 c9 120 121 129 d0 d1 d9 130 131 139 E0 E1 E9 140 141 149 F0 F1 F9 150 151 159 Indoor fan speed Outdoor fan speed 0 OFF 1 2 3 4 Low speed Medium speed High speed Turbo For some...

Страница 47: ...e switches F2 should be settled as below Dip switch 2 Dip switch 1 Remote on off control status OFF OFF Disconnected send CP closed cancel CP ON OFF Closed send CP disconnected cancel CP 10 5 3 ON OFF...

Страница 48: ...connect to Max 16 indoor units All the indoor units must be the same series and in the same network The address of Multi function board must be set differently The connection method must be Bus type...

Страница 49: ...47 10 5 7 2 Connected to Non poplar wired controller Note It must use shield cables to connect with Non poplar wired controller The length should not exceed 5...

Страница 50: ...electricity power in capacitor Electrolytic Capacitors HIGH VOLTAGE CAUTION For other models please connect discharge resistance approx 100 40W or soldering iron plug between terminals of the electro...

Страница 51: ...C Refrigerant leakage detection 1 times O F0 Overload current protection 2 times O F1 Outdoor ambient temperature sensor T4 open circuit or short circuit 3 times O F2 Condenser coil temperature sensor...

Страница 52: ...Installation mistake PCB faulty Trouble shooting Yes Replace the indoor outdoor main PCB Power off then restart the unit 2 minutes later EEPROM a read only memory whose contents can be erased and repr...

Страница 53: ...ack pan N If the voltage has always been the positive value Power off then restart the unit 2 minutes later Power off then restart the unit 2 minutes later If the voltage is a fixed value Replace the...

Страница 54: ...ark Use a multimeter to test the DC voltage between 2 port and 3 port of outdoor unit The red pin of multimeter connects with 2 port while the black pin is for 3 port When AC is normal running the vol...

Страница 55: ...off the power supply and turn it on 2 minutes later Is it still displaying the error code Shut off the power supply rotate the fan by hand Does it rotate properly The unit operates normally Find out t...

Страница 56: ...NO Color Signal Voltage 1 Red Vs Vm 280V 380V 2 3 Black GND 0V 4 White Vcc 14 17 5V 5 Yellow Vsp 0 5 6V 6 Blue FG 14 17 5V 2 Outdoor DC Fan Motor control chip is in outdoor PCB Power on and check if t...

Страница 57: ...turn off Supposed causes T2 sensor faulty Indoor PCB faulty System problems such as leakage or blocking Trouble shooting Is there cool air blowing out from indoor air outlet Yes Yes Check if T2 senso...

Страница 58: ...is lower than 0 06V or higher than 4 94V the LED will display the failure Supposed causes Wiring mistake Sensor faulty PCB faulty Trouble shooting Check the connections between temperature sensor and...

Страница 59: ...PCB faulty Wiring mistake Compressor malfunction Check the power supply Is it normal Check the connections and wires Is it well connection Stop the unit Check the power supply No Yes No Correct the c...

Страница 60: ...n PCB and compressor If the wires and connectors are broken Correct the connection or replace the wires and connectors Yes No IPM continuity check Check if the IPM terminal resistance values are unifo...

Страница 61: ...ytic capacitors discharge completely and dismount the IPM Use a digital tester to measure the resistance between P and UVWN UVW and N Digital tester Normal resistance value Digital tester Normal resis...

Страница 62: ...Check the power supply Check the connections and wires Stop the unit No Yes No Correct the connections or replace the wires Yes Replace the reactor Yes No Replace the IPM board Power on and when the...

Страница 63: ...higher than limited value the LED will display the failure Supposed causes IPM radiator problem PCB faulty Trouble shooting Yes Tighten the screws and apply silicon grease Tighten the screws and appl...

Страница 64: ...connected well Correct the connection or replace the wires and connectors No Yes Check if the IPM installed correctly Correct the installation tighten the screws and apply silicon grease No IPM contin...

Страница 65: ...ed causes Wiring mistake PCB faulty Display board malfunction Trouble shooting Power off then restart the unit 2 minutes later Is it still displaying the error code Replace the indoor main PCB Is the...

Страница 66: ...the resistance value with a tester Temperature Sensors Room temperature T1 sensor Indoor coil temperature T2 sensor Outdoor coil temperature T3 sensor Outdoor ambient temperature T4 sensor Compressor...

Страница 67: ...29078 117 243 0 38991 2 28 39 8239 38 100 5 62961 78 172 1 25423 118 244 0 37956 1 30 37 1988 39 102 5 39689 79 174 1 2133 119 246 0 36954 0 32 35 2024 40 104 5 17519 80 176 1 17393 120 248 0 35982 1...

Страница 68: ...2 422 4 25 222 8 36 97 34 32 76 169 7 82 116 241 2 357 3 27 211 4 37 99 32 94 77 171 7 566 117 243 2 294 2 28 200 7 38 100 31 62 78 172 7 321 118 244 2 233 1 30 190 5 39 102 30 36 79 174 7 086 119 246...

Страница 69: ...checking Measure the resistance value of each winding by using the tester Position Resistance Value KSN98D22UFZ KSM135D23UFZ KTF235D22UMT Blue Red 1 57 20 68 1 72 20 68 0 75 20 68 Blue Black Red Blue...

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Страница 72: ...Scan here to download the latest version of this manual WALL MOUNTED UNIT AIR CONDITIONING SYSTEMS...

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