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Störungscode P04_ECOi_ME1

(ECOi-Geräte)


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Alarm Code P04
Alarm meaning High-pressure switch activated. 
Alarm conditions The operation of the electronic circuit in the high-pressure switch may short-circuit the terminal depending on the pressure. A pressure of 3.3 MPa or above will short-circuit the terminal. Once the terminal is short-circuited, it will remain in that state until the pressure goes below 2.6 MPa.
Probable cause
  1. Failure of the check valve in the compressor discharge tube.
  2. The service valve is closed.
  3. Clogging of the outdoor heat exchanger during cooling.
  4. An air short in the outdoor unit during cooling.
  5. Failure of the outdoor fan during cooling.
  6. Clogging of the air filter in the indoor unit during heating.
  7. An air short in the indoor unit during heating.
  8. Failure of the indoor fan during heating.
  9. Clogging of the refrigerant circuit.
  10. Failure of the mechanical valve.
  11. Failure of the solenoid valve kit.
  12. Too much refrigerant has been charged.
  13. Failure of the high-pressure switch.
Check
  1. Make sure that the high-pressure switch connector has been properly connected.
  2. If the high-pressure switch is properly connected, connect a high-pressure gauge to the high-pressure outlet port and monitor the pressure during operation to check the pressure when the high-pressure switch is activated. Check valve failure is likely if the pressure is less than 3.3 MPa. The following describes checks to be made when the pressure is high.
  3. During cooling, check whether the outdoor unit heat exchanger is clogged. Remove anyforeign material that prevents ventilation.
  4. During cooling, check whether an air short blockage has occurred in the outdoor unit. The system is operating normally unless the temperature around the outdoor unit is excessively high.
  5. During cooling, check for outdoor fan failure. Check whether the screws securing the fan are loose and whether the fan connector in the outdoor unit PCB is properly connected.
  6. During heating, check whether the air filters in the indoor unit are clogged. If clogged, clean the filters.
  7. During heating, check whether an air short blockage has occurred in the indoor unit. The system operates normally unless the temperature around the indoor unit is excessively high.
  8. During heating, check for indoor fan failure.
  9. Check whether the refrigerant circuit is clogged. Check that all service valves are closed.Check whether welded locations are clogged.
  10. Check for mechanical valve failure. Check whether the mechanical valves make a clattering sound when the power is reset. Since the mechanical valve in the indoor unit is in a location that makes aural inspection difficult, use an electric means to check. Check that the connector pin of the mechanical valve on the PCB outputs 4 V. In addition, check that the coil resistance of the mechanical valve is several tens of Ω.
  11. Check for solenoid valve kit failure. Removing a coil that is on will result in a clicking sound.Also, removing a coil that is off will not produce such a sound.
  12. Check whether too much refrigerant has been charged. Too much refrigerant has been charged if the sub-cool temperature of the condenser is 15ºC or more.
Correction Replace damaged components and correct the amount of charged refrigerant.
Example –
Notes –

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GerätegruppeCode 
ECOi-GeräteE06_ECOi_ME1
ECOi-GeräteE12_ECOi_ME1
ECOi-GeräteE15_ECOi_ME1
ECOi-GeräteE16_ECOi_ME1
ECOi-GeräteE20_ECOi_ME1
ECOi-GeräteE24_ECOi_ME1
ECOi-GeräteE25_ECOi_ME1
ECOi-GeräteE26_ECOi_ME1
ECOi-GeräteE29_ECOi_ME1
ECOi-GeräteE31_ECOi_ME1
ECOi-GeräteF04_F05_F22_ECOi_ME1
ECOi-GeräteF06_F23_ECOi_ME1
ECOi-GeräteF07_F24_ECOi_ME1
ECOi-GeräteF08_ECOi_ME1
ECOi-GeräteF12_ECOi_ME1
ECOi-GeräteF16_ECOi_ME1
ECOi-GeräteF17_ECOi_ME1
ECOi-GeräteF31_ECOi_ME1
ECOi-GeräteH11_H12_H21_H22_ECOi_ME1
ECOi-GeräteH03_H13_H23_ECOi_ME1
ECOi-GeräteH05_H15_H25_ECOi_ME1
ECOi-GeräteH06_ECOi_ME1
ECOi-GeräteH08_H27_H28_ECOi_ME1
ECOi-GeräteH31_ECOi_ME1
ECOi-GeräteL04_ECOi_ME1
ECOi-GeräteL10_ECOi_ME1
ECOi-GeräteL17_ECOi_ME1
ECOi-GeräteL18_ECOi_ME1
ECOi-GeräteP02_ECOi_ME1
ECOi-GeräteP03_P17_P18_ECOi_ME1
ECOi-GeräteP04_ECOi_ME1
ECOi-GeräteP05_ECOi_ME1
ECOi-GeräteP14_ECOi_ME1
ECOi-GeräteP16_ECOi_ME1
ECOi-GeräteP20_ECOi_ME1
ECOi-GeräteP22_ECOi_ME1
ECOi-GeräteP29_ECOi_ME1
ECOi-GeräteE06_ECOi_MF1
ECOi-GeräteE12_ECOi_MF1
ECOi-GeräteE15_ECOi_MF1
ECOi-GeräteE16_ECOi_MF1
ECOi-GeräteE20_ECOi_MF1
ECOi-GeräteE24_ECOi_MF1
ECOi-GeräteE25_ECOi_MF1
ECOi-GeräteE26_ECOi_MF1
ECOi-GeräteE29_ECOi_MF1
ECOi-GeräteF04_F05_F22_ECOi_MF1
ECOi-GeräteF06_F23_F25_ECOi_MF1
ECOi-GeräteF07_F24_F26_ECOi_MF1
ECOi-GeräteF08_ECOi_MF1
ECOi-GeräteF12_ECOi_MF1
ECOi-GeräteF16_ECOi_MF1
ECOi-GeräteF17_ECOi_MF1
ECOi-GeräteF31_ECOi_MF1
ECOi-GeräteH11_H12_H21_H22_ECOi_MF1
ECOi-GeräteH03_H13_H23_ECOi_MF1
ECOi-GeräteH05_H15_H25_ECOi_MF1
ECOi-GeräteH06_ECOi_MF1
ECOi-GeräteH07_ECOi_MF1
ECOi-GeräteH08_H27_H28_ECOi_MF1
ECOi-GeräteH31_ECOi_MF1
ECOi-GeräteL04_ECOi_MF1
ECOi-GeräteL10_ECOi_MF1
ECOi-GeräteL11_ECOi_MF1
ECOi-GeräteL17_ECOi_MF1
ECOi-GeräteP03_P17_P18_ECOi_MF1
ECOi-GeräteP04_ECOi_MF1
ECOi-GeräteP05_ECOi_MF1
ECOi-GeräteP16_ECOi_MF1
ECOi-GeräteP22_ECOi_MF1
ECOi-GeräteP26_ECOi_MF1
ECOi-GeräteP29_ECOi_MF1
ECOi-GeräteE01_Mini_ECOi
ECOi-GeräteE02_Mini_ECOi
ECOi-GeräteE03_Mini_ECOi
ECOi-GeräteE04_Mini_ECOi
ECOi-GeräteE05_Mini_ECOi
ECOi-GeräteE06_Mini_ECOi
ECOi-GeräteE07_Mini_ECOi
ECOi-GeräteE08_Mini_ECOi
ECOi-GeräteE09_Mini_ECOi
ECOi-GeräteE12_Mini_ECOi
ECOi-GeräteE13_Mini_ECOi
ECOi-GeräteE15_Mini_ECOi
ECOi-GeräteE16_Mini_ECOi
ECOi-GeräteE18_Mini_ECOi
ECOi-GeräteE20_Mini_ECOi
ECOi-GeräteE30_Mini_ECOi
ECOi-GeräteF04_Mini_ECOi
ECOi-GeräteF07_Mini_ECOi
ECOi-GeräteF08_Mini_ECOi
ECOi-GeräteF12_Mini_ECOi
ECOi-GeräteF16_Mini_ECOi
ECOi-GeräteF31_Mini_ECOi
ECOi-GeräteH01_Mini_ECOi
ECOi-GeräteH02_Mini_ECOi
ECOi-GeräteH03_Mini_ECOi
ECOi-GeräteH31_Mini_ECOi
ECOi-GeräteL04_Mini_ECOi
ECOi-GeräteL10_Mini_ECOi
ECOi-GeräteL18_Mini_ECOi
ECOi-GeräteP03_Mini_ECOi
ECOi-GeräteP04_Mini_ECOi
ECOi-GeräteP05_Mini_ECOi
ECOi-GeräteP13_Mini_ECOi
ECOi-GeräteP14_Mini_ECOi
ECOi-GeräteP16_Mini_ECOi
ECOi-GeräteP22_Mini_ECOi
ECOi-GeräteP29_Mini_ECOi
Frühere Big-RAC-GeräteModellreihen UV, TV und EV
Frühere Big-RAC-GeräteModellreihen U01, T01 und E01
Frühere Big-RAC-GeräteModellreihen U32 ff
FS-GeräteF15-01
FS-GeräteF16-01
FS-GeräteF17-02
FS-GeräteF20-01
FS-GeräteF20-02
FS-GeräteF21-01
FS-GeräteF26-01
FS-GeräteF27-01
FS-GeräteF27-05
FS-GeräteF30-01
FS-GeräteF30-02
FS-GeräteF31-01
FS-GeräteF31-02
FS-GeräteF31-06
FS-GeräteF31-08
FS-GeräteF31-09
FS-GeräteF31-10
FS-GeräteF32-03
FS-GeräteF32-04
FS-GeräteF32-05
FS-GeräteF32-06
FS-GeräteF32-08
FS-GeräteF32-09
FS-GeräteF32-10
FS-GeräteF35-02
FS-GeräteF40-01
FS-GeräteF40-11
FS-GeräteF40-21
FS-GeräteF40-31
FS-GeräteF40-51
FS-GeräteF41-02
FS-GeräteF41-12
FS-GeräteF42-11
FS-GeräteF44-01
RAC- und Semi-FS- Inverter-GeräteH11
RAC- und Semi-FS- Inverter-GeräteH12
RAC- und Semi-FS- Inverter-GeräteH14
RAC- und Semi-FS- Inverter-GeräteH15
RAC- und Semi-FS- Inverter-GeräteH16
RAC- und Semi-FS- Inverter-GeräteH19
RAC- und Semi-FS- Inverter-GeräteH21
RAC- und Semi-FS- Inverter-GeräteH23
RAC- und Semi-FS- Inverter-GeräteH24
RAC- und Semi-FS- Inverter-GeräteH25
RAC- und Semi-FS- Inverter-GeräteH26
RAC- und Semi-FS- Inverter-GeräteH27
RAC- und Semi-FS- Inverter-GeräteH28
RAC- und Semi-FS- Inverter-GeräteH30
RAC- und Semi-FS- Inverter-GeräteH32
RAC- und Semi-FS- Inverter-GeräteH33
RAC- und Semi-FS- Inverter-GeräteH34
RAC- und Semi-FS- Inverter-GeräteH35
RAC- und Semi-FS- Inverter-GeräteH36
RAC- und Semi-FS- Inverter-GeräteH37
RAC- und Semi-FS- Inverter-GeräteH38
RAC- und Semi-FS- Inverter-GeräteH39
RAC- und Semi-FS- Inverter-GeräteH41
RAC- und Semi-FS- Inverter-GeräteH50
RAC- und Semi-FS- Inverter-GeräteH51
RAC- und Semi-FS- Inverter-GeräteH52
RAC- und Semi-FS- Inverter-GeräteH58
RAC- und Semi-FS- Inverter-GeräteH97
RAC- und Semi-FS- Inverter-GeräteH98
RAC- und Semi-FS- Inverter-GeräteH99
RAC- und Semi-FS- Inverter-GeräteF11
RAC- und Semi-FS- Inverter-GeräteF17
RAC- und Semi-FS- Inverter-GeräteF90
RAC- und Semi-FS- Inverter-GeräteF91
RAC- und Semi-FS- Inverter-GeräteF93
RAC- und Semi-FS- Inverter-GeräteF95
RAC- und Semi-FS- Inverter-GeräteF96
RAC- und Semi-FS- Inverter-GeräteF97
RAC- und Semi-FS- Inverter-GeräteF98
RAC- und Semi-FS- Inverter-GeräteF99