Airwell AWAU-YBZ214-H11 Manuel de service télécharger pdf (Page 44)

CONTROL SYSTEM

12-4 Service Manual – YBZ DCI 1-A.1 GB

12.1.5.2 EEV initial value determination

The EEV initial value (open loop) is determined according to the number of the active indoor

units, mode, and the capacity code of the unit.

12.1.5.3 Balance time

During the balance after SB the correction is not calculated. After that the correction value is

updated every 5 seconds.

12.1.5.4 EEV corrections

The corrections will keep the compressor in the proper operation temperature (Target CTT

control) and will balance between the indoor units by controlling their super heat.

12.1.5.5

EEV opening of inactive indoors

Under Cool Mode/Dry Mode, relative EEV of inactive indoor will be fully closed to 0.

Under Heat Mode, relative EEV of inactive indoor will maintain an opening in a range so that

refrigerant and oil can come back to outdoor.

12.1.6 Reversing Valve (RV) Control

Reversing valve is on in heat mode.

Switching of RV state is done only after compressor is OFF for over 2 minutes.

12.2 Fan Mode

In this mode, the indoor fan may run at high, medium, low and automatic speed. The compressor,

outdoor fan and 4-way valve will be OFF.

In this mode, the range of setting temperature is 16~30C

12.3 Cool Mode

12.3.1 Starting Cool Mode

If the system is in idle, when any one indoor requests the cooling mode operating, the system will

run in Cool Mode. EEV, OFAN and compressor will start operating.

12.3.2 Compressor’s action when Indoor changed to inactive (OFF or

Thermo OFF)

12.3.2.1 All indoors to inactive

Compressor stops immediately, OFAN stops after 1 min.

1 2 ... 39 40 41 42 43 44 45 46 47 48 49 ... 75 76

Pas de commentaire

Airwell AWAU-YBZ214-H11 Manuel de service Page 44