Service Manual
Installation and Maintenance
49
(3) Malfunction of Overload protection for compressor H3
Draw-water motor can't operate
normally.
The refrigerant is leaking
and cause overheating protection to
compressor.
Replace the draw-water motor.
Water outlet hasn't been blocked well
by rubber cork.
Block the water outlet well.
Check the leaking status of refrigerant
and charge refrigerant.
Clean the heat exchangers
and remove
blockage of air inlet/outlet.
Heat exchangers are
too dirty or the air inlet/outlet
is blocked.
Check motor and re-install the moto
to make it run normally.
Fan motor doesn't work at a
End
Remove blockage in the system.
System is blocked inside
(dirt block, ice block, oil block, Y-valve no
fully open).
Compressor doesn't work
normally. Strange noise or leakage occurs.
Make compressor run normally.
Casing is too hot.
Replace a main
board with the
same model.
Malfunction is
eliminated.
Malfunction is
eliminated.
Malfunction is
eliminated.
Malfunction is
eliminated.
Malfunction is
eliminated.
Malfunction is
eliminated.
Malfunction is
eliminated.
Troubleshooting
for H3 malfunction
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
normal fan speed; fan speed is too low or the
fan doesn't run.
