Main Functions - Haier HSU18VHJ(DB) Service Manual

5.1.1.3 Wind volume limit
When the compressor is working and the max setting for indoor fan motor is medium or weak, the
upper limit of indicated frequency is as follows:
Frequency control form for wind volume
Medium wind volume
Weak wind volume
Limited frequency for
up/down health wind

5.1.2 Main functions

5.1.2.1 Warm boot
When the heat running starts or the frost removing ends and the compressor starts again, in order to
avoid cold wind, warm boot wind volume control should be done.
Heat exchange temperature
THHOT3 37
THHOT2 35
THHOT1 25
THHOTR 23
Stop
To control the indoor fan motor as shown in the table above according to the heat exchange
temperature
The fan motor stops when the heat exchange temperature is below 25
The fan motor is working slightly weak when the heat exchange temperature is above25
below 35
The fan motor is working weak when the heat exchange temperature is above35
The fan motor works as set if the he heat exchange temperature remains above 38
HSU12/18VHJ(DB)
Limited frequency
variables
FQLIMMD
FQLIMLO
FUPHEAL
4 minutes
slightly
weak
weak
20
Limited frequency
70Hz
58Hz
48Hz
setting
Domestic Air Conditioner
slightly
weak stop
weak
and below 37
and