Midea V6R VRF Series Service Manual page 99

V6R VRF 50Hz
2.10 F3, F5, F9, FA, Fb, Fc, Fd: T6B/T6A/T5/T8/T9/TL/T7 Temperature sensor error
Digital display output
Description
 F3 indicates subcooling gas temperature sensor (T6B) error.
 F5 indicates injection liquid temperature sensor (T6A) error.
 F9 indicates liquid pipe temperature sensor (T5) error.
 FA indicates heat exchanger gas temperature sensor (T8) error.
 Fb indicates heat sink temperature sensor (T9) error.
 Fc indicates heat exchanger liquid temperature sensor (TL) error.
 Fd indicates suction temperature sensor (T7) error.
 All units stop running.
 Error code is displayed on the unit with the error.
Trigger / recover condition
 Trigger condition: Temperature sensor T6A/T6B/T5/T7/T8/T9/TL is open or short-circuited.
 Recover condition: Temperature sensor T6A/T6B/T5/T7/T8/T9/TL connection ports can detect load.
 Reset method: Resume automatically.
Possible causes
 Temperature sensor not connected properly or has malfunction.
 Damaged outdoor main PCB.
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