innovair EV10C2DB6, Service Manual

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8.3 Main Protection
8.3.1 Time Delay at restart for compressor.
8.3.2 Sensor protection at open circuit and breaking disconnection.
8.3.3 Zero crossing detection error protection
If AC can not detect zero crossing signal for 4 minutes or the zero crossing signal time interval is not
correct, the unit will stop and the LED will display the failure. The correct zero crossing signal time
interval should be between 6-13ms.
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.3.4 Fan Speed is out of control
When Indoor Fan Speed is too low(lower than 300RPM) lasting 50 seconds, the unit stops and LED
displays failure information and can’t returns to normal operation automatically.
8.4 Operation Modes and Functions
8.4.1 Fan mode.
(1) Outdoor fan and compressor stop.
(2) Temperature setting function is disabled, and no setting temperature is displayed.
(3) Indoor fan can be set to high/med/low/auto.
(4) The louver operates same as in cooling mode.
(5) Auto fan:
8.4.2 Cooling Mode
8.4.2.1 Compressor running rules:
Once the compressor starts up, it will follow the below rules:
When indoor room temp.T1 is lower than Tn, the compressor and outdoor fan will shut off. When T1 is
higher than Tm, the compressor and outdoor fan will start up. (If the unit has refrigerant leakage Detect
function, the compressor will run 5.5 minutes first.)