Haier MRV II - Page 122

Part 3
[38/40] high pressure protection (Pd sensor)
A
if characteristic of
high pressure sensors
are normal
if stop va lve opens fully
if in cooling outdoor
fan motor runs normally
if the connector,
capacitor,fan motor
are normal
if heat exchanger
/filter are clogged or the
air flow is in short circuit
modify
eliminate the abnormal reasons
modity the SV3 bypass circuit
check if outdoor connecting
board is faulty, if yes, replace it
if SV3 bypass
circuit is normal
no
yes
no
no
yes
yes
yes
no
stop va lve opens fully
modify
no
no
yes
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