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5-8 Forced Mode
In this mode the system operates (COOLING or HEATING mode – fixed settings) or is switched off by
means of the MODE button on the indoor unit control board. The operation modes can be selected
pressing the button in a cyclic way (OFF COOL
HEAT
OFF…). The settings are:
COOLING mode
SET POINT temperature = 25°C
FAN SPEED = HIGH
FLAP POSITION = 3
HEATING mode
SET POINT temperature = 21°C
FAN SPEED = HIGH
FLAP POSITION = 4
5-9 Protection operations indoor unit
5-9.1 Freeze-up
This protection prevents ice formation on the indoor coil heat exchanger. The protection is activated
as soon as the indoor coil temperature ICT decreases and acts by decreasing the compresor speed
The system exit this protection routine when ICT temperature rises above 8°C.
5-9.2 Cold draft
This feature prevents the supply of cold air forcing the indoor fan to a speed which cannot be changed
by the user. As soon as the protection mode is exited, speed can be changed manually through the
remote controller. The protection acts in the following
5-9.3 Overheat
This feature prevents the build up of high pressure in the indoor heat exchanger during heating operation
As soon as the indoor coil temperature (ICT) increases, compressor speed is reduced in order to avoid
heat exchanger overheating. System stops compressor operation when ICT reaches 60 °C
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Содержание MPAF129R5IAA
Страница 9: ...2 DIMENSIONAL DATA MRAF99R5IAA MRAF129R5IAA 9...
Страница 10: ...2 DIMENSIONAL DATA MPAF99R5IAA MPAF129R5IAA 10...
Страница 13: ...4 ELECTRICAL DATA 4 1 Electric Wiring Diagrams MRAF99R5IAA MRAF129R5IAA MPAF99R5IAA MPAF129R5IAA 13...
Страница 28: ...6 3 SYSTEM DOES NOT RUN 28...
Страница 29: ...6 3 SYSTEM DOES NOT RUN 29...
Страница 30: ...6 4 OUTDOOR UNIT DOES NOT RUN AND NO FAULT IS DISPLAIED 6 5 ONLY OUTDOOR UNIT IS OFF 30...
Страница 31: ...6 6 OUTDOOR UNIT FAULT SIGNALING 31...
Страница 33: ...3 CHECK MODE BUTTON OPERATION ON THE UNIT Push the mode button The unit does not run PCB assy is defective 33...
Страница 34: ...6 8 NOISY PROBLEM 34...
Страница 35: ...7 CHECKING ELETRICAL COMPONENTS 7 1 35...
Страница 36: ...7 2 36...