Polar Air PTTW-10-EC+EH Series, Инструкция по эксплуатации

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THROUGH THE WALL UNIT 29
2.6.4.2 When IPT sensor is damaged
When IPT is lower than -22°F or higher than 194°F, it is judged to be damaged;
Note
Κ
After IPT sensor is damaged, the green light will flash with 0.5Hz frequency, or the unit
will display E2 on the panel.
2.6.4.3 When OPT sensor is damaged
When unit is In heating mode, compressor runs for 50 minutes, and then defrosts 3 minutes.
2.6.4.4 When RT and IPT sensors are damaged at the same time
Protection function will be according to 2.6.4.1a.
2.6.5 Indoor PG motor failure protection
If there is no fan speed feedback pulse from the PG motor after the motor has been powered
on for 5 seconds, indoor fan motor, compressor, outdoor fan motor, valve and electric heater
will stop. After 10 seconds, PG motor will be powered on again. If the fan speed feedback
signal from the motor is still absent, it will be judged as PG motor failure. Green Light will flash
1.5S/Stop 0.5S, and the unit will display E3 on the panel.
2.6.6 Refrigerant insufficient protection
In cooling mode or cooling in auto mode, compressor operators for 20 minutes, if indoor coil
temperature • room temperature - 9°F, and time lasts to 40 minutes, unit will stop working and
display E4 on the panel.
In heating mode or heating in auto mode, compressor operates for 20 minutes, if indoor coil
temperature ” room tempe 9°F, and time lasts to 40 minutes, unit will stop working
and display E4 on the panel.
2.6.7 Failure Code
Failure means the system cannot self adjust. Turn off the unit and report the error code to
your service centre. Error code:
Failure situation Light flash Code
RT Sensor Failure 1 time E1
IPT Sensor Failure 2 times E2
Indoor PG Motor Failure on 1.5 sec./Stop 0.5 sec. E3
Insufficient Refrigerant on 1.5 sec./Stop 1 sec. E4
2.6.8 OPT failure protection
The OPT sensor is used for the defrost function in heating mode. If OPT sensor works, the
unit will check the data from the OPT sensor, then decide if defrost function is necessary.
Please refer to 2.2.5.
If OPT sensor fails, the unit will select automatic defrost function. Please refer to 2.2.5.3.