Haier AE242FCBKA [75/126] Commercial air conditione

Haier AB092FCBIA [75/126] Commercial air conditione
Commercial Air Conditioner Model: AU242FHBIA,
AU482FIBIA, AU48NFIBJA
8.2 Indoor electric control functions:
No
Control
item
AE*FCBKA AS*FCBHA AB*FCBIA
In cooling mode, the adjustment by the over heating: SH= TC1(gas
pipe)-TC2˄liquid pipe˅
1. Adjust range: min. angle: 60/65, max. angle: 470/350˄data will take
EEPROM as standard˅
2. Overheat modification: according to the discharging temperature, modify
the overheat state, if Td > 100 ć, the overheat value will add 2 degree at the
base of standard degree;
3. Open modification: when EEV is at min. angle, the unit will measure the
difference between Tliquid and Ta at the interval of 5 minutes, if the
difference is within 5 degree, the valve will be back to base open angle and
modify the open angle due to the overheat state
1 EEV control
In heating mode, adjust the open angle according to the conformity of liquid
pipe temperature.
1. Adjust range: indoor unit startup, min open angle: 100, max open angle:
470; indoor unit standby: open angle: 60.
2. The indoor EEV open angle will depend on the temperature difference
between indoor liquid pipe temp. and average liquid temp. of all running
indoor units. (if lower than average temp., the valve will open; if high than
average temp., the valve will close.
Anti-freeze control in cooling mode:
ƔWhen liquid pipe temp. is below 7 degree for 40 minutes, or when liquid
pipe temp. is below 4 degree for 10 minute, the unit will enter anti-freeze
function. At this time, the current indoor EEV will close, and the fan motor will
turn into low speed from the current speed.
ƔAfter the anti-freeze function has worked for 10 minutes, and liquid pipe
temp. is over 7 degree, the unit will quit anti-freeze control (take the data in
EEPROM as standard).
2
Fan motor
control
Anti-cold air control in heating mode:
ƔWhen liquid pipe temp. is below 33 degree, indoor fan speed will turn into
low speed from the set speed; when liquid pipe temp. is below 25 degree,
indoor motor will stop.
ƔWhen liquid pipe temp. is over 30 degree, indoor fan speed will turn into low
speed from stop; when liquid pipe temp. is over 35 degree, indoor motor will
enter the set speed (take the data in EEPROM as standard).
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