Control Of Defrosting In Heating; Compulsory Defrosting Control - Haier Super Match Series Service Manual

3.2.5 Control of defrosting in heating

In heating mode, defrosting temp. sensor will check the frosting condition of outdoor heat exchanger and make
defrosting control.
A: Enter condition:
a. In heating mode, if the compressor has run for 10 minutes continously and run for 45 minutes in all, the
system will measure the defrosting temperature sensor Te and outdoor ambient temp. sensor TA, if the below
condition can be met for continous 5 minutes, the unit will enter defrosting operation:
Te≤C×TA-α
o,
Herein: C: TA<0 C=0.8 TA≥0
According to SW5-2, the setting is as follow: in the place easy to frost, it is H; when out of factory, it is M.
Jumper selection M(out of factory)
o
C
α( ) 8(E)
b. Defrosting entering condition: -15
c. Stop and Pause condition of compressor running accumulative time in heating mode:
Checking Stop: running operation changes from heating to cooling.
Checking Pause: thermostat OFF, or the unit stops.
Cancel condition:
It will take the max. 10 minutes from beginning defrosting to quit it. Te sensor will measure the condition of
outdoor heat exchanger, if the temp. is over 7
defrosting will be over.

3.2.6 Compulsory defrosting control

Enter condition: in heating mode, after receiving the compulsory defrosting signal from indoor unit, the unit will
perform the compulsory defrosting operation.
Cancel condition: Te≥12
defrosting signal of indoor unit will remain until the outdoor enters defrosting mode.
Note: When outdoor compressor not running, the unti still can enter manual defrosting, but it will comply with
the 3-minute protection of compressor.
o
C, C=0.6
H
6(E)
o
C≤C×TA-α≤-2
o
C for 60 seconds in all or is up to 12
o
C and keep for 1 minute or the defrosting time is over 10 minutes. The manual
Super Match
o
C;
122
o
C for 30 seconds in all, the