Gree D Series Service Manual

28
D Series Modular Air-cooled Scroll Chillers
Service Manual
MAINTENANCE
1 ERROR LIST
Error Rated Element Protection Logic
High-pressure
protection
High pressure switch
:KHQWKHSUHVVXUHLVWRRKLJKRUWKHFXUUHQWH[FHHGVWKHVHWSRLQWWKHFRUUHVSRQGLQJ
compressor will stop and the indicating LED on the controll panel will light on and the
error information will be displayed on the error log which must be manually cleared for
QRUPDORSHUDWLRQRIQH[WWLPH
Compressor over-
current protection
Over-current protector
Low pressure
protection
Low-pressure switch
When it is detected the low-pressure switch of the compressor is opened frequently,
the compressor will be shut down immediately. Meanwhile, the error information will be
displayed among the error log which must be manually cleared for normal operation of
QH[WWLPH
High discharge
protection
Discharge
temperature sensor
When it is detected in three consecutive seconds that the discharge temperature
H[FHHGVWKHVHWSRLQWWKHFRPSUHVVRUZLOOEHVKXWGRZQLPPHGLDWHO\0HDQZKLOHWKH
error information will be displayed among the error log which must be manually cleared
IRUQRUPDORSHUDWLRQRIQH[WWLPH
Fan over-current
protection
Fan over-current
protector
When a fan is over-current, the corresponding unit will be shut down. Meanwhile, the
error information will be displayed among the error log which must be manually cleared
IRUQRUPDORSHUDWLRQRIQH[WWLPH
Temperature
sensor protection
Temperature sensor
When an entering water temperature sensor fails, the compressor of the corresponding
module will be shut down immediately while the fan will still run for some time.
When a discharge temperature sensor fails, or the sensed discharge temperature is
always below the set point, the compressor of the corresponding module will be shut
down immediately. It can recover in three seconds but If the same case occurs more
than three times, the system will be locked until the system is unlocked and then it
VKRXOGEHPDQXDOO\FOHDUHGIRUQRUPDORSHUDWLRQRIQH[WWLPH
When the anti-freezing temperature sensor or the leaving water temperature sensor
fails, it can be automatically cleared as the temperature sensor automatically recover.
But if the same case occurs three times in one hour or the temperature sensor fails to
UHFRYHULWVKRXOGEHPDQXDOO\FOHDUHGIRUQRUPDORSHUDWLRQRIQH[WWLPH0HDQZKLOH
the indicating LED on the controll panel will light on and the error information will be
displayed on the error log.
:DWHUÀRZ
switch protection
Contactor
:KHQDVLQJOHPRGXOHGHWHFWVLWVÀRZVZLWFKLVFORVHGWKLVPRGXOHZLOODXWRPDWLFDOO\
EHVKXWGRZQ:KHQDOOÀRZVZLWFKHVDUHFORVHGWKHZDWHUSXPSZLOOVWRS
Phase loss/reversal
protection
Phase protector
When phase loss/reversal occurs, the phase protector will cut off the power supply to
the main board.
Communication error Main board
When the single module fails to receive signals from the controll panel, it will
automatically be shut off.
ТОО "Everest climate" г. Алматы, Варламова 1а, тел.+7 727 230 00 10, e-mail: info@aircon.kz, сайт:www.aircon.kz

Gree D Series Specifications

General

Brand	Gree
Model	D Series
Category	Chiller
Language	English