Gree LSQWF65M/N-M User Manual

AIR COOLED SCROLL CHILLER MAINTENANCE
32
MAINTENANCE
1 TROUBLE TABLE
Error
Display
Description Signal Source Control Logic
Hi pressure
1 of Comp.
High pressure
protection of
compressor 1
High pressure
switch of
compressor 1
Hi pressure
2 of Comp.
High pressure
protection of
compressor 2
High pressure
switch of
compressor 2
High pressure switch acts when high pressure
reaches 3.0MPa.If both of the compressors are off,
the fan will delay to stop. For 4-fan system: if the
compressor of a certain system is off, the
corresponding fan will delay to stop. Error
indicator on display board will light and relative
mark will also be displayed. It must be manually
cleared to resume running of the unit.
Low
pressure 1
of Comp.
Low pressure
protection of
compressor 1
Low pressure
switch of
compressor 1
Low
pressure 2
of Comp.
Low pressure
protection of
compressor 2
Low pressure
switch of
compressor 2
Error code is displayed and can not be
automatically resumed. If error code disappears
after reset, the malfunction is cleared.
Overload of
Comp.1
Overload protection of
compressor 1
Overload protector
of compressor 1
Overload of
Comp.2
Overload protection of
compressor 2
Overload protector
of compressor 2
If overload protection of compressor is detected,
the relative compressor will immediately be
stopped and then the fan. If compressor overload
protection is detected 3 times successively, error
code will be displayed and it can not automatically
resume. After reset, the malfunction will be
cleared if the problem disappears.
Overcurrent
of fan 1
Overcurrent protection
of fan 1
Overcurrent
protector of fan
If fan overload protection is detected, all
compressors and fans should be immediately
stopped. If it resumes after 3min, running of unit
will automatically resume. If fan overload
protection is detected 3 times successively, error
code will be displayed and it can not automatically
resume. After reset, the malfunction will be
cleared if the problem disappears.
Inlet water
temp.
sensor
Inlet water temp.
sensor protection
Inlet water temp.
sensor
If inlet water temp. sensor malfunction, the unit
will run as usual and display error code.
Outlet
water temp.
sensor
Outlet water temp.
sensor protection
Outlet water temp.
sensor
If short circuit or open circuit of outlet temp.
sensor malfunction, error code will be displayed
and all loads will be stopped. The unit will resume
running if the problem is solved.

Gree LSQWF65M/N-M Specifications

General

Brand	Gree
Model	LSQWF65M/N-M
Category	Chiller
Language	English