Gree GWC07NA-D3NNA5E, Руководство по обслуживанию

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8 E3
Low pressure
protection of
compressor
OFF 3S and
blinks 3
times
(inverter
unit); running
indicator
blinks
(non-inverter
floor standing
unit); As for
other types
of units,
please refer
to the
detailed
function
requirement.
The complete unit
stops
1. The main board and display
panel are not connected well.
2. The LPP terminal on the main
board is not connected well with the
high pressure switch on the
complete unit.
3. The wiring of the high pressure
switch is loosened. High pressure
switch is damaged or poorly
contacted.
4. Insufficient or leaking out
refrigerant.
5. The LPP input is at high level.
5
E1
OFF 3S and
blinks once
(inverter
unit); the
running
indicator
blinks
(non-inverter
floor
standing
unit); As for
other types
of units,
please refer
to the
detailed
function
requirement.
During cooling and
drying operation, except
indoor fan operates, all
loads stop operation.
During heating
operation, if it is inverter
unit, the complete unit
stops; if it is floor
standing unit, the
complete unit stops and
operation of remote
controller or controller is
unavailable.
1. The main board and the display
panel are not connected well.
2. The OVC terminal on main board
is not connected well with the high
pressure switch on the complete unit.
3. The wiring of high pressure switch
is loosened.
4. Refrigerant is superabundant;
5. Poor heat exchange (including
blocked heat exchanger and bad
radiating environment );
6. Ambient temperature is too high; (if
it is 3-phase unit, the high pressure
protection may be caused by
overcurrent protection due to this
reason)
7. The supply voltage is abnormal (if
it is 3-phase unit, the high pressure
protection may be caused by
overcurrent protection due to this
reason)
8. The air intake and air discharge at
indoor / outdoor heat exchanger are
not smooth. The air cycle is short
circuited.
9. Filter and heat exchange fins of
indoor/outdoor units are blocked.
10. The system pipeline is blocked.
11. The gas valve and liquid valve for
outdoor unit are not completely
opened.
12. The OVC input is at high level.
High pressure
protection
9 E4
High discharge
temperature protection
of compressor
OFF 3S and
blinks 4
times
(inverter unit
); running
indicator
blinks
(non-inverter
floor standing
unit); As for
other types
of units,
please refer
to the
detailed
function
requirement.
During cooling and
drying operation,
compressor and
outdoor fan stop while
indoor fan operates.
During heating
operation,all loads
stop.
1. Abnormal system (e.g.: blockage,
etc)
2. Abnormal rotation speed of
outdoor motor (cooling )
3. Abnormal air intake (cooling)
4. System is normal, but the
compressor discharge temperature
sensor is abnormal or poorly
contacted.