Haier AC122ACERA [337/408] Electric control functions

defrosting mode:

a. 5ć(E)<Tao<15ć, Te<=-4ć(E);

b. -6ć(E)<Tao<5ć, Teİ-9ć(E);

c. Tao<-6ć, Teİ-12ć(E) and defrost compressor has run for 50 minutes(E) in all.

Realtime bypass defrost operation flow char:

inverter compressor indicated FQY keep the current FQY as defrosting FQY f1HZ/second

f1HZ/second

beginning end

outdoor motor ON high speed

Max. 10 minutes

OFF

4-way valve ON

OFF

Unloading valve SV1/SV2 OFF OFF

120-pulse(E)

expansion valve PMV auto open angle auto open angle

indoor motor ON

OFF anti-cold air function

C. Compulsory defrost

Enter condition: when received the compulsory defrost single from indoor unit in heating mode

(thermostat OFF), begin to compulsory defrost.

Quit condition: Teı14ć(E) for 30 senconds contineously or Teı10ć(E) for 60 senconds contineously or

the defrost time over 10 minutes(E).

The manual defrost single of indoor unit will not cancel until the outdoor unit enter defrost.

Note: Manual defrost can also realize if the compressor is shut off, but follow the formula of compressor 3

minutes stop.

1.6 PTC output control

a. When outdoor unit is electrified, PTC output is 0, 20 seconds later, it is 1.

b. After compressor stops for 10 minutes contineously, PTC output is 0.

c. When getting the compressor-start signal, firstly PTC output is 1, 5 seconds later, compressor will start up.

1.7 Time shorting function, auto-checking function

Time shorting function: If the time shorting port is in short circuit, the unit will perform a 1/60 time shorting

control.

Auto-checking function: When first short-circuit then electrified, enter auto-checking.

1.8 Additional functions

1.8.1 The interval between compressor stop to startup again is 3 minutes, which can protection compressor. If

being electrified for the first time, compressor will start up only when the valve opens to the normal operation

angle.

Electric control functions

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