SMART CELLAR INVERTER COOLING UNIT
INDOOR LCD AP2 GATEWAY ERROR CODE LIST
N
O
MALFUNCTI
ON NAME
DUAL 8
CODE
DISPLAY
A/C STATUS
POSSIBLE CAUSE
1
High
discharge
temperature
protection of
compressor
E4
During cooling and drying
operation, compressor and outdoor
fan stop while indoor fan operates.
During heating operatioN, all loads
stop.
Please refer to the malfunction
analysis (discharge protection,
overload)
2
Overcurrent
protection
E5
During cooling and drying
operation compressor and outdoor
fan stop while indoor fan operates.
During heating operation, all loads
stop.
1.
Supply voltage is unstable
2.
Supply voltage is too low and
load is too high
3.
Evaporator is dirty
3
Communicati
on
malfunction
E6
During cooling operation
compressor stops while indoor fan
motor operates. During heating
operation the complete unit stops.
Refer to the corresponding
malfunction analysis
4
High
temperature
resistant
protection
E8
During cooling operation:
compressor will stop while indoor
fan will operate. During heating
operation, the complete unitstops.
Refer to the malfunction analysis
(overload, high temperature resistant)
5
PG motor
(indoor fan
motor) does
not operate
H6
Indoor fan, outdoor fan,
compressor and electric heat tube
stop operation. Horizontal louver
stops at the current position.
1.
The feedback terminal of PG
motor is not connected
tightly
2.
The control terminal of PG
motor is not connected
tightly
3.
Fan blade rotates unsmothly
4.
Malfunction motor
5.
Controller is damaged
6
Malfunction
protection of
jumpercap
C5
Operation of remote controller or
control panel is available, but the
unit won't act.
1.
There is no jumper cap on
the controller
2.
Jumper cap is not inserted
properly and tightly
3.
Jumper cap is damaged
4.
Controller is damaged
7
Indoor
ambient
temperature
sensor is
open/short
circuited
F1
During cooling and drying
operation, indoor unit operates
while other loads will stop; during
heating operation, the complete
unit will stop operation.
1.
The wiring terminal between
indoor ambient temperature
sensor and controller is
loosened or poorly contacted
2.
Theres short circuit due to
trip-over of the parts on
controller
3.
Indoor ambient temperature
sensor is damaged (please
check by referring to the
resistance table for
temperature sensor)
4.
Main board is broken
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