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ECOi-Geräte – Mini-ECOi


Alarm codes (Störungscodes)

AlarmCodeAlarm meaning
E01 Remote Controller Reception Error
E02 Remote Controller Transmission Error
E03 Error in Indoor Unit Receiving Signal from Remote Controller (central)
E04 Error in Indoor Unit Receiving Signal from the Outdoor unit
E05 Error in Indoor Unit Transmitting Signal to the Outdoor Unit
E06 Error in the Outdoor Unit Receiving Signal from the Indoor Unit
E07 Error in Outdoor Unit Transmitting Signal to the Indoor Unit
E08 Duplicate Indoor Unit Address Settings Error
E09 More Than One Remote Controller Set to Main Error
E12 Start of Auto Address Setting Prohibited Due to Auto Address Setting Being in Progress
E13 Error in Indoor Unit Transmitting Signal to Remote Controller
E15 Auto-Address Alarm (not enough units)
E16 Auto-Address Alarm (too many units)
E18 Faulty Communication in Group Control Wiring
E20 No Indoor Units Error
E30 Outdoor Unit Serial Transmission Error
F04 Compressor Discharge Temperature Sensor Error
F07 Heat Exchanger Inlet Temperature Sensor (C1) Error
F08 Outdoor Air Temperature Sensor (TO) Error
F12 Compressor Intake Temperature Sensor (TS) Error
F16 High Pressure Sensor Error
F31 Outdoor Unit Nonvolatile Memory (EEPROM) Error
H01 Primary Current (Input) Detect of Overcurrent
H02 PAM Error
H03 Compressor CT Sensor (Current Sensor) Unplugged
H31 HIC Error
L04 Duplicated Setting of Outdoor System Address Error
L10 Outdoor Unit Capacity Not Yet Setup Error
L18 4-way valve operation failure
P03 Compressor Discharge Temperature Error
P04 Actuation of High Pressure Switch
P05 Power Supply Error
P13 Forgot-to-open Valve Alarm
P14 O2 Sensor
P16 Overcurrent of Inverter Compressor
P22 Outdoor Fan Motor Error
P29 INV Compressor Start-up Failed (including lock) Due to INV Compressor Wiring Open Phase, Faulty DCCT, etc.

Checks Prior to Auto Address Setting

If an outdoor unit displays an alarm, conduct this process after diagnosing the problem.

1 Auto Address
Is the power of the indoor unit(s) and outdoor unit(s) on?
Yes 2-1
No  Power on
2 Indoor/ outdoor control line 2-1 Has the wiring of the indoor/outdoor control line been completed? Is it all connected?
Yes  2-2 
No  Connect wiring
2-2 Has high voltage (over AC200V) been applied to the control line circuit? Has the fuse on the control PC board blown? (Check each board of the indoor unit(s) and outdoor unit(s).) 
Yes  2-3
No  3-1


The power line and indoor/outdoor control line are miswired. Turn off the power, check & correct the miswiring and then make connections of the indoor/outdoor control lines to the emergency side of all the control PC boards and controllers.
3 Installation or setting related 3-1 Check the setting of the number of indoor units on the outdoor control PC board. Is the setting the same as the number of indoor units that are actually connected? Yes 3-2 
No Correct the setting 
3-2 Is the indoor/outdoor control line connected to more than one outdoor unit? (Network wired?) Yes  3-3 
No  3-6 
3-3 Is the Terminal resistor select switch on the outdoor control PC board set to just one unit? Yes  3-4 
No  Correct the setting 
3-4 Are other outdoor units using a duplicate setting? Yes  3-5 
No  3-6 
3-5 When units are networked, first set the system address for each outdoor unit in the order 1-2-3 and then run auto address setting.
3-6 Run the auto address setting.



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