akira AC-F30HG, Service Manual

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34
Model No: AC-F30HG
Version 1.0
2. Protecting of compressor high-pressure:
When detect protecting of high-pressure for 3sec, turn off load except water pump, shield all
button and signal of remote control, timer indicate light will flashing; when detect no protecting
of compressor high-pressure for 6sec, remove shielding function, timer indicate light will
flashing, after press ON/OFF to turn off unit, turn off indicate light, When press ON/OFF, then
restart running.
3. Protecting of compressor low-pressure:
a. After compressor start for 3min, begin to detect signal of low-pressure switch, if detect that
low-pressure switch turn off for 3min, then the unit stop, timer indicate light will flashing,
after 3min the unit renew to run automatically; if protecting of low-pressure switch
continually appear times, timer indicate light will flashing, and the unit can not renew
automatically, in order to awoke user that the unit leak refrigerant; after press ON/OFF, the
unit turn off, press ON/OFF again, renew to run;
b. When frosting act, the unit do not detect signal of low-pressure switch. After finish frosting
for 10min, to start to detect;
c. At the same time, press the force key and auto key of controller, shield to detect signal of
low-pressure switch, so that reclaim refrigerant, after 6min, renew detecting automatically,
or press ON/OFF key to turn off the unit, after press ON/OFF key again, renew detecting;
d. When heating act, if T
out
≤ -0
o
C, shield detect low-pressure switch;
e. When heating act, compressor run, and the outdoor fan motor stop (protecting of avoid high
temperature), shield detect low-pressure switch, after the outdoor fan motor renew to run,
start to detect signal of low-pressure switch;
f. When compressor stop, if detect that low-pressure switch turn off for 30sec, then the unit
turn off, timer indicate light will flashing, can not renew automatically. After press
ON/OFF key, the unit turn off, if press ON/OFF key, then renew to run unit.
4. Protecting of discharge pipe high temperature:
After compressor starts, if detect that T
con
higher than T2 (T2=120
o
C, 125
o
C, 130
o
C, different
jump-thread) for 30sec, or discharge pipe temperature sensor have any trouble, timer indicate
light flash.
The unit stops as if T
in
reach T
set
.
After compressor stops for over 3min, if T
con
< 90
o
C, then the unit renew to run. If this
protecting phenomenon happens twice continually, and the unit can not renew automatically,
timer indicate light flashes. Press ON/OFF key to turn off the unit, press ON/OFF key again, if
T
con
< 90
o
C, the unit can run in set mode, otherwise timer indicate light still flashes.
5. Protecting of indoor exceed high temperature:
When heating act, if detect T
eva
≥ 56
o
C for 5 sec, the outdoor unit fan motor stops, if T
eva
≤ 51
o
C, the outdoor unit fan motor startups. If T
eva
≥ 100
o
C, the indoor unit fan motor
automatically turn to high speed; If T
eva
≤ 48
o
C, the indoor unit fan motor turn to old set speed.
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