Argo AW720HL, Service Manual

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5-7 Forced Mode
In this mode the system operates (COOLING or HEATING mode – fixed settings) or is switched off by
means of the MODE button of the indoor unit control board. The operation modes can be selected
pressing the button in a cyclic way (OFF
Ö COOL Ö HEAT Ö OFF…). The settings are:
COOLING mode
SET POINT temperature = 25°C
FAN SPEED = HIGH
HEATING mode
SET POINT temperature = 21°C
FAN SPEED = HIGH
5-8 Protection operations in Cool and Dry Mode
This protection prevents ice formation on the indoor coil heat exchanger. The protection is activated by
the indoor coil temperature (ICT sensor) and only after 6 minutes of compressor operation. This
protection acts in 2 levels:
LEVEL 1
INDOOR FAN SPEED: ANY (as selected from remote controller)
COMPRESSOR: ON
OUTDOOR FAN: cycling (30 seconds ON
B 30 seconds OFF).
LEVEL 2
INDOOR FAN SPEED: ANY (as selected from remote controller)
COMPRESSOR: OFF for at least 6 minutes and until ICT
≥ 8°C
OUTDOOR FAN: OFF for at least 6 minutes and until ICT ≥ 8°C
The system exit this protection routine when ICT temperature rises above 8°C.
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