Eh 0B(Communication Error Between Indoor Two Chips Diagnosis And Solution) - Mars Comfort-Aire Century VCD-SA Series Service Manual

Service Manual - VCDxxSA

7.24 EH 0b(Communication error between indoor two chips diagnosis and solution)

Description: Indoor PCB main chip does not receive feedback from another chip.
Recommended parts to prepare:
• Indoor main board
• Adapter board
Troubleshooting and repair:
Shut off the power supply and
turn it on 2 minutes later.
Is it still displaying
the error code?
Yes
Check the connection wires
between the adaptor board and
the main board, is it connected
properly?
No
Reconnect and retry. Is the
error still displayed?
Yes
No
Replace the adaptor board. Is
the system running normally?
No
Replace indoor main board.
 Troubleshooting 48
Yes
Yes
Trouble is resolved
