Haier AE182FCBKA [72/126] Commercial air conditione

Haier AB092FCBIA [72/126] Commercial air conditione

Commercial Air Conditioner Model: AU242FHBIA,

AU482FIBIA, AU48NFIBJA

control In heating mode, EEV will be adjusted due to the overheating value: SH= TS-TC

1. Adjust range: according to the compressor frequency, min open angle of EEV will be

different: high frequency, 120; med frequency, 110; low frequency, 90; the max open

angle: 470/350

2. Overheating modification: according to the discharging temperature, modify the

overheating value, when Td>100ć, overheating value will decrease 2 at the standard

overheating value; when Td İ 70 ć , overheating value will add 2 at the standard

overheating value

4-way

valve

secure

operation

1. Secure operation conditions of 4-way valve:

ƽ After the outdoor receives the heating signal from indoor unit, if the 4-way valve is

not electrified before the compressor starts up, the unit will enter the 4-way valve

secure operation.

ƽ After defrosting is over, the unit will enter the 4-way valve secure operation.

2. 4-way valve secure operation control:

ƽ In heating mode, After the outdoor receives the startup signal from indoor unit, the

compressor will start up, (fan motor shutoff, EEV close) and when the frequency rises up

to 50Hz for 10 seconds, 4-way valve will reverse (meanwhile, fan motor will enter the

target speed, EEV enters the open angle of soft startup) and the unit enters soft startup

period.

ƽ In defrosting, when the defrost condition is met, the compressor frequency will

decrease to 50Hz, 4-way valve will reverse (meanwhile, fan motor will enter the target

speed) and the unit enters soft startup period.

3. 4-way valve control in OFF state:

4-way valve will close after compressor stops for 30 minutes.

Defrosting

control

1. Enter condition: when compressor runs for 45 minutes in

all in heating mode, by checking TE and TA, if the below

conditions can be met for continuous 5 minutes, the unit

will enter defrosting operation: TEİChTAˉ¢, herein,

ƽC˖TA˘0ć, C=0.8; TAı0ć, C=0.6

ƽ¢˖set as 12˄L˅,10˄M˅,8˄H˅ according to the

actual condition. At the easily defrosting place, set as H; at

the not-easy-defrosting place, set as L; when out of factory,

set as M

ƽTemperature limitation: -15ćEİTEİ2ćE

1. Enter condition:

when compressor

runs for 45 minutes

in all in heating

mode, by checking

TE and TA, if the

below conditions can

be met for

continuous 5

minutes, the unit will

enter defrosting

operation:

ƽWhen Ta˘2ć, TA-TE

ı9ć for continuous 2

minutes; or Te ˘ -12 ć

for continuous 5 minutes;

ƽWhen Taı2ć, Te˘-5

ć for continuous 5

minutes;

-72-

Haier AE182FCBKA [72/126] Commercial air conditione

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