Haier MRV II Instruction Manual page 131

[47] radiator temp. abnormal
if radiator temp.
sensor is normal
when compressor or fan
motor is running, if radiator
control port SV3 has output
if radiator fan motor
terminal is fixed firmly
radiator fan motor is
damaged
air circuit of radiator is
clogged
[48] ACCT over current protection
after compressor starts
up, check if the digital tuble display
value of ACCT and the value measured
by the amperemeter are
identical
check if gate circuit
board is fixed well
check the compressor,
judge its state according to the
noise, vibrat ion, running stat e
and make some improvement
no
yes
no
yes
yes
no
yes
no
yes
yes
yes
rep lace radiator
temp. sensor
check if main board is
broken down
repair the bad terminal
replace radiator fan motor
eliminate the air circuit
no
if ACCT winding is
normal
yes
check if the earthing of
CNFG and CNAC2 on
inverter board is fixed well
no
re-fix
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yes
replace main board
no
re place ACCT
no
replace main board
Part 3