Midea RSJ-15/190RDN3-D, Техническое руководство

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MCAC-RTSM-2011-12 Midea Combo Type Heat Pump Water Heater Technical Manual
50
D. "E5": The ambient temperature sensor (T4) error
Display
E5
Method of
malfunction
detection Check whether T4 temperature sensor cable are connected correctly.
Supposed
Causes 1. Temperature sensor cables
don’t connect correctly.
2. The sensor terminal is loose.
3. The sensor circuit is short or open
4. The main control board's clamp diodes are short or open.
Troubleshooting
E5
Is T5 port on PCB loose?
Temperature
sensor is short or
defective.
The chip's pins do not match
correctly or the chip is
defective.
Insert the chip correctly or replace it with
a fine one
Replace the temperature
sensor
Replace the main
control board.
YES
NO
YES
NO
Fasten the port.
YES
NO