Haier MRV II Instruction Manual page 106

2.4.4 Heating operation confirmation
set the mode as HEAT: press the button
for over 5 seconds at OFF state
if blowing out hot air
if the ventilation is good
make all indo ors running
simultaneously
temp. difference between air
outlet and air inlet is good
if running voltage is proper
if runnng current is in the
range of rated current
(at the max. frequency)
if running pressure is proper
start
yes
yes
yes
(380V ± 10%)
yes
± 15%
yes
yes
normal
no
no
no
no
no
no
no
- 106 -
Part 3
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
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
capacity, compressor
running frequency, outdoor
fan operation, and if
compressor sounds
abnormal noise