Haier MRV II - Page 106

Part 3
2.4.4 Heating operation confirmation
start
set the mode as HEAT: press the button
for over 5 seconds at OFF state
check every indoor unit
if blowing out hot air
yes
yes
if the ventilation is good
make all indo ors running
simultaneously
temp. difference between air
outlet and air inlet is good
yes
once outdoor stops, re-start
up the unit 2 and a half
minutes later
confirm the running sta te of
the compressor, indoor EEV
if the louver direction
no
no
no
no
no
no
if running voltage is proper
(380V
±
10%)
yes
if runnng current is in the
ran ge of ra ted curren t 15%
(at the max. frequency)
±
yes
if running pressure is proper
yes
normal
check the power source
voltage, the power cable
spec and the the power
cable terminal installation
check indoor/outdoor temp.,
pipe length, refrigerant
charging amount, indoor
c apacity, compressor
running frequency, outdoor
fan operation, and if
compressor sounds
abnormal noise
no
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