30
Technical Information
Service Manual
protection is eliminated, button and remote control signals are
available.
(7) Indoor high temperature protection (applicable for heating
and auto mode)
When IDU fan motor is in turbo or high fan speed and Ttube≥56
℃
,
ODU fan motor stops operation; when Ttube≤49
℃
, ODU fan
motor starts operation again.
When IDU fan motor is in medium or low fan speed and
Ttube≥52
℃
, ODU fan motor stops operation; when Ttube≤46
℃
,
ODU fan motor starts operation again.
(8)Temperature sensor malfunction protection (applicable in
cooling, heating, drying fan or auto mode)
①
Malfunction of indoor ambient temperature sensor: indoor unit
displays F1, which means indoor ambient temperature sensor
is open-circuit or short-circuit, or its detection circuit element is
broken.
②
Malfunction of indoor evaporator temperature sensor: indoor unit
displays F2, which means indoor evaporator temperature sensor
is open-circuit or short-circuit, or its detection circuit element is
broken.
③
Malfunction of outdoor ambient temperature sensor: indoor unit
displays F3, which means outdoor ambient temperature sensor
is open-circuit or short-circuit, or its detection circuit element is
broken;
④
Malfunction of outdoor condenser temperature sensor: indoor
unit displays F4, which means outdoor condenser temperature
sensor is open-circuit or short-circuit, or its detection circuit
element is broken;
⑤
Malfunction of outdoor discharge temperature sensor: indoor
unit displays F5, which means outdoor discharge temperature
sensor is open-circuit or short-circuit, or its detection circuit
element is broken.