Units Maintenance; Trouble Table - Gree HLR35SM/NaA-M Service Manual

MODULAR MINI CHILLER

UNITS MAINTENANCE

1 TROUBLE TABLE

Source of
Name of Error
Error Signal
high pressure
pressure
of compressor
switch of
1 (compressor
system 1
2)
(system 2)
low pressure of pressure
compressor 1 switch of
(compressor 2) system 1
(system 2)
discharge high discharge
temperature temperature
protection of
compressor 1 system 1
(compressor 2) (system 2)
overcurrent
overcurrent of
protector of
compressor
compressor
If the high pressure switch of compressor 1
(compressor
high
compressor will stop. If both compressors stop, the two
fans will stop later.
The error LED of the display board lights and the
corresponding alarm mark will be shown in "malfunction
view". The error must be removed manually before the unit
resume normal running.
If the
(compressor
compressor will stop. If both compressors stop, the two
fans will stop later. The error can be removed automatically
for 5 times while it can not resume automatically for the 6
time. If it is detected for 3 times in one hour, it can not
resume automatically. The corresponding marks will be
shown in "error view". It is required to remove the error
low manually.
When the display board is off, the low pressure will not
be detected. In automatic anti-freezing and defrosting
mode, after startup of the water pump, the low pressure will
be detected by pressing heating low pressure button.
When the display board is on, if the low pressure is lower
than heating low pressure protection value, the controller
will send "low pressure protection" signal. The error can not
be removed unless repaired by service man. When the
compressor stops running, if the low pressure is lower than
heating low pressure, the controller will send "low pressure
protection" signal. The error can not be removed unless
repaired by service man.
If the
(≥130 start protection; the resume value is 85 ) of
compressor
corresponding compressor will stop. If both compressors
sensor stop, the two fans will stop later.
The error LED of the display board lights and the
corresponding alarm symbol will be shown in "malfunction
view". The error must be removed manually before the unit
resume normal running.
If the overcurrent of compressor 1 (compressor 2) is
detected, the corresponding compressor will stop. If both
compressors stop, the two fans will stop later.
The error LED of the display board lights and the
corresponding alarm symbol will be shown in "malfunction
view". The error must be removed manually before the unit
resume normal running.
Description
2) disconnects,
low pressure switch
2) disconnects,
discharge high temperature
1 (compressor 2)
MAINTENANCE
the corresponding
of compressor 1
the corresponding
th
protection
is detected, the
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