Check code

Check code name

Possible causes

 

 

 

[E02]

R/C transmission error

Signal transmission to indoor unit is

(New code)

 

disabled.

 

 

 

* Not indicated on the central controller and outdoor unit 7-segment.

Com. cable between

NO

Correct communication cable.

R/C and I/U connected

 

 

 

 

 

properly?

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

Failure of R/C

 

 

 

transmitter → Replace R/C.

 

 

 

 

 

 

 

Check code

Check code name

Possible causes

 

 

 

[E03]

I/U - R/C communication error

No communication from R/C and communication adapter.

(New code)

(detected by I/U)

 

 

 

 

Indoor unit (I/U) detects this error when it cannot receive signals from remote controller (R/C).

Check communication wiring of R/C A and B.

This code E03 is not displayed on the R/C because of communication error.

This code is displayed on the TCC-LINK central controller.

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