Toyotomi CFT 35 INV-Ri Service Manual page 55

TLC-I-2011.1
4. E3 malfunction (For 36K & 48K & 60K)
E3 display
Communication malfunction in outdoor IC and DSP
Yes
Check whether the indicator lights LED1 or LED2 on the main control
board are flashing
Replace PCB
No
Yes
Install the IC-U3 chip of the PCB over again, check whether the system
Trouble is solved
can run normally
No
Yes
Check whether the output of the transformer to CN4 socket is well Replace PCB
No
Replace the transformer
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