Zanussi ZS12V70CCHI, Service Manual

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8.6
Warning Codes
Warning Code (7 Segment) Outdoor unit led Warning Description
Compressor speed limited due
to outdoor pipe (condenser)
temperature
No display
Blinking 2 times -
stopping for 3 sec.
Limits or decreases the compressor frequency when
the temperature on the condenser goes out of limits
due to outside factors and customer usage.
Compressor speed limited
due to compressor pressing
temperature
No display
Blinking 3 times -
stopping for 3 sec.
Occurs when the compressor temperature reaches
above the critical level. Limits or decreases the
compressor frequency when limits are exceeded.
Exchanger cleanliness and gas level should be
checked.
Compressor speed limited due
to board cooler temperature
No display
Blinking 4 times -
stopping for 3 sec.
May occur when the outdoors are too hot or in out-
of-limit situations. Limits or decreases compressor
frequency.
Compressor speed limited
due to indoor unit exchanger
temperature
No display
Blinking 5 times -
stopping for 3 sec.
Compressor frequencies are limited or its speed
decreased for high temperature in heating and ice
melting in cooling in the indoor unit.
Compressor speed limited due
to current
No display
Blinking 10 times -
stopping for 3 sec.
Generally, the current increases due to the burden
generated by the high outdoor temperature.
Therefore, the compressor's operating speed is
limited.
PFC high voltage switch-off
protection
No display
Blinking 28 times -
stopping for 3 sec. Protection occurs in order for the board to not get
damaged when the device remains at high voltage
Sudden voltage drop/
compressor protection
No display
Blinking 29 times -
stopping for 3 sec. Speed is decreased to prevent damage to the
compressor in sudden voltage drops.
AC high voltage information No display
Blinking 20 times -
stopping for 3 sec.
Indicates that supply voltage is high.
8.7
Protection Functions
Not all errors occurring in inverter air conditioners are defined as malfunction. Some error may be temporary due to external factors
or different reasons. These temporary errors are named protection. A
ir conditioner resumes working after the causes of the
protection go away
. The warning code display with the help of the LED on the outdoor unit board are as follows.
8.7.1
Protection According To The Outdoor Temperature
Cooling mode outdoor tem-
perature limits
Outdoor Temperatures Description
Outdoor temperature limit 43-47-50-54 °C
If the outdoor temperature is in this range, compressor tends to
first fix the frequency and then decrease it.
Heating mode outdoor tem-
perature limits
Outdoor Temperatures Description
Outdoor temperature limit 15-19-23 °C
If the outdoor temperature is in this range, compressor tends to
first fix the frequency and then decrease it.
8.7.2
Compressor Discharge Temperature Protection
Compressors used in air conditioners work between certain heat values determined by the companies. The predetermined
temperature limits in inverter air conditioners are as follows.
Compressor Discharge
Temperature protections Protection
Limits
Description
Comp. Discharge temperature
limit 3
113 °C
If the discharge temperature is above this value, compressor and outdoor unit fan
motor stops.
Comp. Discharge temperature
limit 2
106 °C
If the discharge temperature is above this value, frequency is decreased.
Comp. Discharge temperature
limit 1
103 °C
If the discharge temperature is above this value, frequency is not increased.
Comp. Discharge temperature
limit reset
96 °C
If the discharge temperature is below this value, protection deactivates.