Midea RSJ-15/190RDN3-D

MCAC-RTSM-2011-12 Midea Combo Type Heat Pump Water Heater Technical Manual
48
B. E1": Water tank temperature sensor (T5L) error
Display
E1
Method of
malfunction
detection
Check whether T5L 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
E1
Is T5L 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