Airwell KXV Series, Engineering Manual

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Engineering manual
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from HMI; Df and Dc open is forced cool mode; Df and DC short is forced heat mode (Optional).
● PSC: Power shedding mode. When these two pins (Do and Dc) are connected, the unit will enter power shedding mode.
(Optional)
Dry contact with high voltage output definition:
● Alarm: Short La and Na, an alarm signal with 220V voltage will be sent out when there is fault in system;
● Base heater: Short Lh and Nh, 220v power will be supplied in some conditions.
1.6 Installation Setting Through HMI
Outdoor controller board has a HMI (Human Machine Interface) which you can set the status of the outdoor unit. There
are two important settings for installation —— address setting procedure and outdoor control mode setting.
1.6.1 Address Setting Procedure
Before normal running, ITEST is a must process for address setting when the unit is powered on for the first time. ITEST
has to be done only after all installation works are finished.
1. When outdoor is powered on for the first time, “initP” will start blinking on the HMI for about 30 seconds. (Chart
1-38)
2. And then, HMI will display “in_dd”, which reminds you to go to ITEST for address setting. (Chart 1-39)
3. Long press MODE button for 5 seconds, then ODU will enter ITEST process and LED1~LED5 will blink “itESt”.
(Chart 1-40)
4. After about 3-6 minutes, ITEST process will be finished, and HMI will display as “noFbo”. (Chart 1-41)
5. After that, you can run the VRF system normally.
Chart 1-38
Chart 1-39
Chart 1-40
Chart 1-41