emmeti XECO Series, Installation Manual

Page: 23 / 40

23
1. DESCRIZIONE DEI COMPONENTI
GB GB
13
Abnormal evaporator
temperature sensor of
indoor unit
F2
OFF 3s
and blink
2 times
Cooling and dehumidification:
compressor and outdoor fan stops
while the indoor fan continues to run.
Heating: the entire unit stops.
1. Loose or bad contact of the
temperature sensor with the
Electronic board;
2. Temperature sensor damaged;
3. Electronic board unit damaged;
4. The head of the temperature sensor
is not inserted inside the copper
pipe.
14
Abnormal ambient
temperature sensor of
outdoor unit
F3
OFF 3s
and blink
3 times
Cooling and dehumidification:
compressor and outdoor fan stops
while the indoor fan continues to run.
Heating: the entire unit stops.
1. Loose or bad contact of the
temperature sensor with the
Electronic board;
2. Temperature sensor damaged;
3. Electronic board outdoor unit
damaged;
15
Abnormal condenser
temperature sensor of
outdoor unit
F4
OFF 3s
and blink
4 times
Cooling and dehumidification:
compressor and outdoor fan stops
while the indoor fan continues to run.
Heating: the entire unit stops.
1. Loose or bad contact of the
temperature sensor with the
Electronic board;
2. Temperature sensor damaged;
3. Electronic board outdoor unit
damaged;
4. The head of the temperature sensor
is not inserted inside the copper
pipe.
16
Abnormal flow
temperature sensor of
outdoor unit
F5
OFF 3s
and blink
5 times
Dehumidification and cooling: the
compressor stops after running for
about 3 minutes, while the indoor fan
continues to run. Heating the entire
unit stops after running for about 3
minutes.
1. Loose or bad contact of the
temperature sensor with the
Electronic board;
2. Temperature sensor damaged;
3. Electronic board outdoor unit
damaged;
4. The head of the temperature sensor
is not inserted inside the copper
pipe.
17
Reduced frequency due
to overload
F6
OFF 3s
and blink
6 times
The entire unit operate normally,
but the working frequency of the
compressor is reduced
1. Low supply voltage;
2. Overabundance of refrigerant;
3. Ambient temperature is too high;
4. Poor heat exchange (exchanger
dirty or poor air circulation).
18
Reduced frequency due
to overcurrent
F8
OFF 3s
and blink
8 times
The entire unit operate normally,
but the working frequency of the
compressor is reduced
1. Low supply voltage;
2. Overabundance of refrigerant;
3. Ambient temperature is too high;
4. Poor heat exchange (exchanger
dirty or poor air circulation).
19
Reduced frequency due
to overheating exhaust
air
F9
OFF 3s
and blink
9 times
The entire unit operate normally,
but the working frequency of the
compressor is reduced
1. Ambient temperature is too high;
2. Insufficient refrigerant;
3. Malfunction of electronic expansion
valve.
20
Reduced frequency
due to
for anti-freezing of
indoor unit
FH
OFF 3s
and blink
2 times
OFF 3s
and blink
2 times
The entire unit operate normally,
but the working frequency of the
compressor is reduced
1. Poor heat exchange (exchanger
dirty or poor air circulation).
2. Indoor unit fan speed is too low;
21
Voltage too high for the
electronic board
PH
OFF 3s
and blink
11 times
Cooling and dehumidification:
compressor and outdoor fan stops
while the indoor fan continues to run.
Heating: the entire unit stops.
1. Voltage between L and N on the
terminal higer then 265 VAC;
2. Wiring loose (the unit must be
powered off for at least 20 minutes
before checking the wiring);
3. Electronic board damaged.
22
Voltage too low for the
electronic board
PL
OFF 3s
and blink
21 times
Cooling and dehumidification:
compressor and outdoor fan stops
while the indoor fan continues to run.
Heating: the entire unit stops.
1. Voltage between L and N on the
terminal less than 150 VAC;
2. Wiring loose (the unit must be
powered off for at least 20 minutes
before checking the wiring);
3. Electronic board damaged.
23
State of tests:
Minimum compressor
frequency
P0
Displayed during tests of minimum
cooling or minimum heating
NO
Malfunction
Name
Display Method of Indoor Unit
A/C status Possible Causes
Display
Indicator Display ((during
blinking, ON 0.5s and OFF 0.5s)
RUN
COOL
HEAT
1 High pressure protection E1
OFF 3s
and
blink 1
times
Cooling and dehumidification:
compressor and outdoor fan stops
while the indoor fan continues to run.
Heating: the entire unit stops.
1. Overabundance of refrigerant;
2. Poor heat exchange (exchanger
dirty or poor air circulation);
3. Ambient temperature too high.
2
Antifreezing
protection indoor unit
E2
OFF 3s
and blink
2 times
Cooling and dehumidification:
compressor and outdoor fan stops
while the indoor fan continues to run.
1. Poor heat exchange (exchanger
dirty or poor air circulation);
2. Fan motor unit damaged.
3 Low pressure protection E3
OFF 3s
and blink
3 times
The entire unit stops.
1. Insufficient refrigerant;
2. Refrigerant leakage.
4
High temperature
protection of compressor
discharge
E4
OFF 3s
and blink
4 times
Cooling and dehumidification:
compressor and outdoor fan stops
while the indoor fan continues to run.
Heating: the entire unit stops.
1. Overabundance of refrigerant;
2. Ambient temperature is too high;
3. Poor heat exchange (exchanger
dirty or poor air circulation).
5 Overload protection E5
OFF 3s
and blink
6
times
Cooling and dehumidification:
compressor and outdoor fan stops
while the indoor fan continues to run.
Heating: the entire unit stops.
1. Supply unstable voltage;
2. Low supply voltage;
3. Overabundance of refrigerant;
4. Ambient temperature is too high;
5. Poor heat exchange (exchanger
dirty or poor air circulation).
6
Abnormal
communication between
outdoor unit and indoor
unit
E6
OFF 3s
and blink
6
times
Cooling and dehumidification:
compressor and outdoor fan stops
while the indoor fan continues to run.
Heating: the entire unit stops.
Communication cable is not
connected correctly.
7 Overheat protection E8
OFF 3s
and blink
8
times
Cooling and dehumidification:
compressor and outdoor fan stops
while the indoor fan continues to run.
Heating: the entire unit stops.
1. Overabundance of refrigerant;
2. Poor heat exchange (exchanger
dirty or poor air circulation);
3. Ambient temperature too high.
8 Anomaly EEPROM EE
OFF 3s
and blink
15
times
Cooling and dehumidification:
compressor and outdoor fan stops
while the indoor fan continues to run.
Heating: the entire unit stops.
Electronic board of outdoor unit
damaged
9
Reduced frequency for
high
temperature
IPM module
EU
OFF 3s
and blink
6
times
OFF 3s
and blink
6
times
The entire unit operate normally,
but the working frequency of the
compressor is reduced
1. Check the thermal insulation of IPM
module and the radiator (the unit
must be powered off for at least
20 min);
2. Electronic board outdoor unit
damaged.
10
Protection anomaly
jumper
C5
OFF 3s
e 15
lampeggi
The entire unit stops.
The jumper on the electronic board
of the indoor unit is not inserted
correctly.
11 Refrigerant recovery F0
OFF 3s
and blink
1
times
OFF 3s
and blink
1
times
The system operates in cooling mode.
The outdoor unit has received the
signal to enter the function of
“Refrigerant recovery.”
12
Abnormal ambient
temperature sensor of
indoor unit
F1
OFF 3s
and blink
1
times
Cooling and dehumidification:
compressor and outdoor fan stops
while the indoor fan continues to run.
Heating: the entire unit stops.
1. Loose or bad contact of the
temperature sensor with the
Electronic board;
2. Temperature sensor damaged;
3. Electronic board of indoor unit
damaged.
9. MALFUNCTION
NO
Malfunction
Name
Display Method of Indoor Unit
A/C status Possible Causes
Display
Indicator Display ((during
blinking, ON 0.5s and OFF 0.5s)
RUN
COOL
HEAT