Nordic VRF SYSTEM Installation Manual Download Page 20

En-20

11. ERROR CODES

If you use a wired type remote controller, error codes will 
appear on the remote controller display. If you use a wireless 
remote controller, the lamp on the photodetector unit will output 
error codes by way of blinking patterns. See the lamp blinking 
patterns and error codes in the table below.

Error display

Wired 

Remote  

Controller 

Error 

CODE

Error contents

OPERATION 

lamp 

(green)

TIMER 

lamp 

(orange)

FILTER 

lamp 

(red)

 (1)

 (2)

Remote 
controller 
communication 
error

 (1)

 (4)

Anomalous 
network 
communications

 (1)

 (6)

Parallel 
communication 
error

 (3)

 (1)

Power 
frequency error

 (3)

 (2)

Model 
information 
error/EEPROM 
accession error

 (4)

 (1)

Room 
temperature 
thermistor error

 (4)

 (2)

Indoor heat 
exchanger 
temperature 
thermistor error

 (5)

 (1)

Indoor fan motor 
error

 (5)

 (3)

Drainage error

 (9)

 (15)

Outdoor unit 
error

Display mode      : 0.5s ON / 0.5s OFF
 

   : 0.1s ON / 0.1s OFF

 

 ( )  : Number of 

fl

 ashing

Wired Remote Controller Display

Error code

9371022208-02_IM_EN.indd   20

9371022208-02_IM_EN.indd   20

8/31/2012   2:42:35 PM

8/31/2012   2:42:35 PM

Summary of Contents for VRF SYSTEM

Page 1: ...INSTALLATION 4 1 Selecting the pipe material 7 4 2 Pipe requirement 7 4 3 Flare connection pipe connection 7 4 4 Installing heat insulation 8 5 INSTALLING DRAIN PIPES 9 6 ELECTRICAL WIRING 6 1 Electri...

Page 2: ...cycle the pressure in the refrigeration cycle will become abnormally high and cause the piping to rupture If there is a refrigerant leakage make sure that it does not exceed the concentration limit If...

Page 3: ...or the unit to leak water Area filled with mineral oil or containing a large amount of splashed oil or steam such as a kitchen It will deteriorate plastic parts causing the parts to fall or the unit...

Page 4: ...he figure Strong and durable ceiling 3 000 mm or more H 1 800 mm or more 256 mm or more AUXD18 24 298 mm or more AUXA30 36 45 54 Obstruction 1 000 mm or more Floor 1 500 mm or more H The maximum heigh...

Page 5: ...20 45 mm 20 45 mm 20 45 mm 20 45 mm 130 mm 130 mm 80 mm 699 mm Hanging bolt pitch 950 mm Panel frame 860 910 mm Ceiling opening 840 mm Body frame 200 mm 130 mm 50 mm 50 100 mm 10 mm 40 mm 140 145 mm B...

Page 6: ...of at least 490 N per bolt Hole in anchor Hole in plug Concrete Insert Hanging bolt M10 3 3 3 Body installation 1 Install the attached washer and nut prepared on site onto the hanging bolt 2 Hook the...

Page 7: ...tion Use pipe with water resistant heat insulation CAUTION Install heat insulation around both the gas and liquid pipes Failure to do so may cause water leaks Use heat insulation with heat resistance...

Page 8: ...gainst the port on the indoor unit and then turn the flare nut by hand Connection pipe Liquid Connection pipe Gas 3 When the flare nut is tightened properly by your hand hold the body side coupling wi...

Page 9: ...wnward gradient 1 100 to 1 50 850 mm or less WARNING Do not insert the drain piping into the sewer where sulfurous gas occurs Heat exchange erosion may occur Insulate the parts properly so that water...

Page 10: ...tch the terminal block numbers and connection cable colors with those of the outdoor unit Erroneous wiring may cause burning of the electric parts Securely connect the connection cables to the termina...

Page 11: ...acity Recommended cable size mm2 Cable type Remark Power supply cable 2 5 Type245 IEC57 or equivalent 1 50 Hz 198 264 V 2 Cable ground Transmission cable 0 33 LONWORKS compatible cable 22 AWG LEVEL 4...

Page 12: ...the terminal screw tightening torques 7 Please do not fix 2 power supply cables with 1 screw Strip 10 mm Sleeve Screw with special washer Screw with special washer Ring terminal Cable Cable Terminal...

Page 13: ...minal board Remote controller connecting port Cure the wiring connecting port and remote controller connecting port with paste or heat insulation so that insects or dust will not enter the unit Wiring...

Page 14: ...evice 2 Load resistance Load resistance 1 DC power supply 12 24V connected unit a a P C B CN6 b 1 Make the power supply DC12 to 24V Select a power supply capacity with an ample surplus for the connect...

Page 15: ...ggered indoor unit stops and Start Stop operation by a remote controller is restricted When forced stop function is used with forming a remote controller group connect the same equipment to each indoo...

Page 16: ...or address setting by FIELD SETTING as follows Set by either of the methods Each setting method is described 1 to 3 below 1 IU AD REF AD SW settings This section 7 1 Setting the address 2 Remote contr...

Page 17: ...Rotary Switch Setting Refrigerant circuit REF AD SW Indoor unit IU AD SW 10 1 10 1 0 0 0 0 0 0 1 0 1 1 0 1 2 0 2 2 0 2 3 0 3 3 0 3 4 0 4 4 0 4 5 0 5 5 0 5 6 0 6 6 0 6 7 0 7 7 0 7 8 0 8 8 0 8 9 0 9 9...

Page 18: ...etting 02 01 Adjust 1 02 Adjust 2 Hot air tem perature trigger 31 00 Default Adjust the hot air trigger temperature To lower the trigger temperature by 6 degrees C use setting 01 To lower the trigger...

Page 19: ...Installation Manual for the outdoor unit if the PCB for the outdoor unit is to be used for the test operation 9 2 Test operation using Remote Controller Refer to the Installation Manual for the remote...

Page 20: ...ller Error CODE Error contents OPERATION lamp green TIMER lamp orange FILTER lamp red 1 2 Remote controller communication error 1 4 Anomalous network communications 1 6 Parallel communication error 3...

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