Midea MC-SU30-RN1L Owners & Installation Manual page 21

No.
Numerical code tube
1) In case of stand-by, the address of the module is displayed;
2) In case of normal operation, 10. is displayed (10 is followed by dot).
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3）In case of fault or protection, fault code or protection code is displayed.
Spot check. The operating status of outdoor system can be observed through spot check, and specific display
contents are as shown in the following figure:
Normal display
Operating mode Operating capability of the compressor B
T61 frost-proof temp
28
TXV opening A
● Display contents of "operating mode": 1. cooling; 2. heating; 4. pump; 8. Stand-by
● Display contents of "number of online units": the main unit can display the number of online units, and the
subordinate unit displays 0.
29
Input of transformer, 220-230V AC current. (only valid for the main unit)
30
Quick return oil solenoid valve
31
Parameter chip
32
Program burn in prot
33
Four-way valve of the system B
34
Plate heat exchange antifreeze and tropical
35
Compression electromechanical heating belt
36
Target flow switch electric heating belt control port
1. Faults
When the main unit suffers faults, the main unit stops operating, and all other units also stop running;
When the subordinate unit suffers faults, only the unit stops operating, and other units are not affected.
2. Protection
When the main unit is under protection, only the unit stops operating, and other units keep running;
When the subordinate unit is under protection, only the unit stops operating, and other units are not affected.
Detail information
Number of online units
Unit outlet water temp
TXV opening B Operating current of system A
CAUTION
Outdoor ambient temp. Temp. of the condenser A
Unit inlet-water temp Temp. of the condenser B
Operating current of system B
The last failure
I&O manual
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