Midea MUE-36HRN1-R1, Руководство по обслуживанию

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Light Commercial R410A on-off DM17-01.01.08en
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1. Electrical Control Function
1.1 Abbreviation
T1: Indoor room temperature
T2: Evaporator coil temperature
T3: Condenser coil temperature
T4: Outdoor ambient temperature
T5: Compressor discharge temperature
Ts: Setting temperature
1.2 Main Protection
1.2.1 Compressor Restart Delay
1.2.2 Sensor protection at open circuit and breaking disconnection.
1.2.3 Phase check function(for 3-phase models)
If the phase sequence is detected wrong or lack of 1 or 2 phase, the unit won’t start and there is error code
displayed on outdoor PCB.
1.2.4 Low pressure check function(for 48-60K models)
The low pressure switch should be always closed. If it is open, the system will stop until the fault is cleared.
Within 5 minutes after the compressor starts and 4 minutes after defrosting ends, low pressure switch won’t
be checked.
Note: If this protection occurs 3 times within 20 minutes, it won’t recover automatically until the main power
is cut off.
1.2.5 Over-current protection(for 48-60K models)
When compressor is running, if the current is over twice of the rated for 3 seconds, the compressor will stop
and an error code will be displayed on the outdoor PCB. If the current becomes normal, the compressor will
restart after 3 minutes.
1.3 Operation Modes and Functions
1.3.1 Fan mode

Outdoor fan and compressor cease operation.

Temperature setting function is disabled, and no preset temperature is displayed.

Indoor fan can be set to high, ( medium ), low, or auto.

Louver operates the same as in cooling mode.

Auto fan:
For floor standing units:
Auto fan will be controlled in line with cooling auto fan with temperature set to be 24°C.