CF-22
DUAL, TRIPLE, POKER DC Inverter : 5. Control Functions
Multi Liberty
DC Inverter
5.12 Operation by Emergency/Test Button
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HKEU X Models (AUTO/COOL button)
5.12.1 Emergency operation in “AUTO” mode:
If Remote Control is not available or batteries are exhausted, it is possible to operate the air conditioner by pressing
“AUTO/COOL” button once when system is OFF. In this way, Emergency operation in “AUTO” (Automatic) mode will
be started, and the air conditioner will operate in the most suitable way according to room temperature conditions,
with temperature set to 24°C.
5.12.2 Test of air conditioner in Cooling mode “(COOL”):
When system is OFF, press “AUTO/COOL” button twice. In this way, operation in Test mode will be started. System
will operated in forced Cooling mode (“COOL”), with fan speed set to “LOW”. For 30 minutes, room temperature
will not be detected, but protection functions will remain active. Then, operation will go on in “AUTO” (Automatic)
mode, with temperature set to 24°C.
Note 1:
Do not use Test mode for normal operation of Air Conditioner.
5.12.3 End of Emergency or Test operation of air conditioner:
Press “AUTO/COOL” button twice during Emergency Operation, or press it once during Test mode: operation of
system will be stopped (OFF).
Note 2:
It is sufficient to use IR Remote Control at any moment to restore normal operation of system.
5.11.4 In case of automatic switching from Heating mode to Cooling mode, compressor will stop for 15 minutes
before confirming new selection of operation mode, estimating again the temperature differential between T1
and Ts.
5.11.5 Each time set temperature value is modified (Ts), control electronics will select operation mode again,
always on the basis of temperature differential between T1 and new value of Ts.
Temperature differential |T1 - Ts|
Operation mode
Cooling
Fan
|T1- Ts| > 2°C
-1°C ≤ |T1 - Ts| ≤ 2°C
Heating
|T1 - Ts| ≤ -1°C
HTBU X, HSFU X, HRBU X Models
Temperature differential |T1 - Ts|
Operation mode
Cooling
Fan
|T1- Ts| > 1°C
-1°C < |T1 - Ts| ≤ 1°C
Heating
|T1 - Ts| ≤ -1°C
HFIU X Models