emmeti X-REVO-0919E, Use And Installation Manual

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9. ANOMALIES AND FUNCTIONING
CODE DESCRIPTION LED1 LED2 LED3 POSSIBLE CAUSE
Protection against overheated
outdoor radiator
O × ×
a. Radiator sensors fail
b. Detection circuit of the sensor on the control panel fails
Protection of the system against
too high pressure
O O ×
a.The pressure switch fails
b. The pressure detection
switch on the control
panel fails
c. The measured value of
the system pressure
exceeds the limit
The LEDs flash every 2 seconds (2 sec.) To indicate the following anomalies:
With the COMPRESSOR in operation the LEDs flash every second (1 sec.) To signal the following anomalies:
LED1 LED2 LED3 Reasons for the current operating frequency of the compressor is limited
1 O O O Normal frequency rising and decreasing, no limitation
2
× ×

Frequency decreasing or prohibition of frequency rising caused by over-current
3 ×
 
Frequency decreasing or prohibition of frequency rising caused by anti-freezing of refrigeration or anti-overload in
heating
4

×

Frequency decreasing or prohibition of frequency rising caused by too high compressor discharge temperature
5 - - - Limit to the max operating frequency caused by too low power voltage
6
  
Operation at fixed frequency (in the case of capability measuring or compulsory operation at fixed frequency)
7 O × ×
Protective frequency decreasing against outdoor overload (overpower, over frequency conversion rate, over
torque, detection of DC under-voltage)
8

× × Frequency decreasing caused by indoor and outdoor communication fault
9
×

O F+requency decreasing or prohibition of frequency rising protection against overload of outdoor coiled pipe
10 ×

×
Frequency decreasing or prohibition of frequency rising for power-saving when it is being used simultane-
ously with other appliances