Midea ESG-Inv M Series - Ba Ambient Temp. Sensor (T4) out of Operation Range

ESG-Inv M
35
Part 5 – Diagnosis and Troubleshooting
5.4 bA Troubleshooting
Digital display output
Procedure
bA: Ambient temp. sensor (T4) out of operation
range
The setting value of T4MAX or T4MIN is out of
operation range
Yes
Adjust the setting value according to the
operation range
No
Temperature sensor is not installed
Yes
Installed the temperature sensor
No
The location of ambient temperature sensor(T4) is near
the place temperature too low or too high.
Yes
Place the ambient temperature
sensor(T4) in the normal using
environment. Do not exposed to direct
radiation from a high-temperature/low-
temperature heat source.
No
Temperature sensor connection on main PCB is loose
Yes
Ensure the sensor is connected properly
No
Temperature sensor is affected by moisture or water
Yes
Dry the sensor
No
Temperature sensor has short-circuited or failed or big
temperature drift or big temperature drift
Yes
Replace the sensor
No
Replace main PCB
Note：
1. Ambient temp. sensor (T4) connection is port CN6 on main PCB.
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