Gree SXVD200LCJ/A-K, Service Manual

Page: 109 / 170

AIR-TO-WATERHEATPUMP MAINTENANCE
103
E1
Comp High-pressure
protection
z
Comp High-pressure switch is
broken or the wiring is loose.
z
The water in the tank is not
enough.
z
The installation of tank temp
sensor is not correct.
z
The gas valve and liquid valve
are not fully open.
z
The electric expansion valve
can not work normally.
De-energize the unit and then,
energize it again. If the
malfunction is removed, the
code will be cleared.
E3
Comp Low- pressure
protection
z
Comp Low-pressure switch is
broken or the wiring is loose.
z
The system has leaked.
z
The fans stop running or
reverse.
It will be cleared if the
malfunction is removed after
the unit has been turned off.
E4
Comp Discharge temp
protection
z
The resistance of temperature
sensor is not correct.
z
The electric expansion valve is
blocked.
z
The system has leaked.
z
Mainboard of outdoor unit is
damaged.
It will be cleared if the
discharge temp is lower than
92
℃
.
C5
Indoor capacity switch
error
De-energize the unit and then,
energize it again. If the
malfunction is removed, the
code will be cleared.
E6
Communication
malfunction
（
between
outdoor and indoor
mainboard
）
z
The communication line of the
unit is not connected.
z
The communication line is not
through.
z
The communication line of the
unit is not connected correctly.
z
The two ends of
communication line are not
mounted with magnetic ring.
z
The outdoor unit is not
electrically powered
It will be cleared once
communication recovers or it
will be shown all the time
E6
Communication
malfunction
（
between
outdoor mainboard and
wired controller
）
z
The communication line of the
unit is not connected.
z
The communication line is not
through.
z
The communication line of the
unit is not connected correctly.
z
The two ends of
It will be cleared once
communication recovers or it
will be shown all the time