MAXA MI Series - Troubles and causes of air conditioner

Hydronic Highwall
26 Installation
OK
OK
E2: T2 evaporator sensor malfunction
Exist
OK
T2 Connecting wire between sensor
and mainboard gets loose
Reconnect and ensure that the
connection is reliable.
Temperature sensor is short-
circuited or punctured
Exist
Replace sensor
Chip fault, or chip foot sheds off, or chip is
inverted (correct mode is semicircular bent
alignment)
Error
Reinstall chip, or install other chip with same
model on the faulty unit, to check whether
there is something wrong with chip.
Mainboard error:
For example, getting wet
Replace mainboard
OK
OK
OK
E3: T1 evaporator sensor malfunction
Exist
OK
T1 Connecting wire between sensor
and mainboard gets loose
Reconnect and ensure that the
connection is reliable.
Temperature sensor is short-
circuited or punctured
Exist
Replace sensor
Chip fault, or chip foot sheds off, or chip is
inverted (correct mode is semicircular bent
alignment)
Error
Reinstall chip, or install other chip
with same model on the faulty unit,
to check whether there is
something wrong with chip.
Mainboard error:
For example, getting wet
Replace mainboard
OK