TCL Air Conditioner Service Manual
ONE TO 3/4 TYPE:
10.3 Examples of repairing
10.3.1 Display E1 or E2
Reasons:
1) The sensor connection terminal loose or not plugged in.
Wall type
type/Duct type
Solution: Check the connecter of sensor and slot (CN6, CN6-1, CN6-2), if loose or not plugged in, please
connect again.
2) Room temperature sensor (IRT) and Indoor pipe (coil) temperature sensor (IPT) damage (sho
rt or
broken).
Solution:
check the resistance of the sensor wall type R (25℃) =5 kΩ, cassette and duct type R (25℃
)
=5
kΩ, if short or broken please
replace it.
Expansion
valve
Sensor
circuit
LP HP
Motor
Compressor
driving
Switch power
Communication
Filter circuit for
heav
current
Rectifying
filterin
circuit
4-Way valve
EEPROM
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