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Service Diagnosis
31
E1
Description
OUTDOOR PCB ABNORMALITY
Supposed Cause
1. Micro Controller program run-away due to external factor such as Noise, Momentary voltage
drop, Momentary power failure.
2. Damage of EEPROM.
3. Faulty outdoor unit PCB.
4. Broken hardness between PCB.
Troubleshooting
Error still
occur?
No
Yes
Grounded?
Yes
Turn on the power again.
Replace the harness.
Check if the outdoor unit is
grounded.
No
Ground the system.
Is the harness
broken?
Replace outdoor PCB.
Replace outdoor PCB.
No
Yes
Summary of Contents for FTXB50BV1B
Page 1: ...SERVICE MANUAL Inverter DOO 0RXQWHG Single Split SM 5WMY A1 R410A...
Page 60: ...Wiring Connection 54 4 0 Wiring Connection Model ATXN FTXN 25 35L M ARXN RXN 25 35L M...
Page 61: ...Wiring Connection 55 Model ATXN FTXN 50 60L ARXN RXN 50 60L...
Page 62: ...Wiring Connection 56 Model ATXN FTXN 50 60M ARXN RXN 50 60M...