Query Description; Address Dial Of Outdoor Unit; Mode Setting Switch; Sw4 Query Instructions - Midea MDV-D252W/CS Installation Manual

(Chart 2) Function description
Discharge temp detecting point, No.2 fixed compressor
Discharge temp detecting point, No.1 fixed compressor
Discharge temp detecting point, digital compressor
Phase detecting point
C-phase power supply
Power input of transformer
Load output
Load output
Load output
Load output
Power output of transformer
Load output
Electronic expansion valve driving port
Electronic expansion valve driving port
Indoor to outdoor unit communication port
Current detecting inductor, No.2 fixed compressor
Current detecting inductor, No.1 fixed compressor
Current detecting inductor, digital compressor
Outdoor temp detecting point
Outdoor condenser temp detecting point
Signal input port, low-pressure detecting switch
Signal input port, hi-pressure detecting switch
Outdoor to outdoor unit communication port
Reserved
Reserved
Reserved
Reserved
Reserved
Please complete address setting of indoor and outdoor
units before debugging.
HV inside electric control box, do not touch!

Address dial of outdoor unit

The quantity of outdoor unit is searched.
The address dial is shown below:
Address 0: outdoor main unit;
Address 1: outdoor auxiliary unit;
Address 2: outdoor auxiliary unit;
Address 3: outdoor auxiliary unit;
Address higher than 3: ineffective address, error occurs.
Distance between ground bolt is shown below: (Note: Outdoor units in
the same system should be located in the same level.
Through hole(15X20 long hole)
Outdoor unit

QUERY DESCRIPTION

SW4 query instructions:

Display content
Normal display Normal display
ADDR of outdoor unit
Cap. of outdoor unit
Qty. of outdoor unit
Total cap. of outdoor units
Cap. REQT. of indoor units
Cap. REQT. of main unit (after correction)
Running mode
Actual running cap. of outdoor unit
Fan speed
T2 average
T3 pipe temp
T4 ambient temp
Discharge temp, digital compressor
Discharge temp, No.1 fixed compressor
Discharge temp, No.2 fixed compressor
Current, digital compressor
Current, No.1 fixed compressor
Current, No.2 fixed compressor
Opening degree, electronic expansion valve A
Opening degree, electronic expansion valve B
Qty. of indoor unit
The last error or protection code
Normal display:
Display qty. of indoor units which communicate with outdoor unit on
standby mode. In case of cap. requirement, display opening degree
of unloading valve PWM of digital compressor.
Running mode:
OFF: 0--OFF, 1-- FAN, 2-- COOL, 3-- HEAT, 4-- Constraint cool
Fan speed: 0--OFF, 1-- LOW, 2--HIGH
PWV opening: pulse count=displayed value 8
SW1: outdoor unit cap. setting switch
SW3: constraint cool button
SW5: mode locking switch
The outdoor unit of 8Hp, 10Hp and 12Hp exclude the part in broken
line circle and relevant wiring (including the wiring with CT2 current
inductor and HEAT2) on nameplate.

Mode setting switch

See following chart:
Mode setting
COOL
Note
Effective to main unit
Effective to main unit
Effective to main unit
Actual value
Actual value
Actual value
Actual value
Actual value
Actual value
Actual value
Actual value
Actual value
Actual value 8
Actual value 8
Actual value
No protection or error, display 00
End of query
SW2: outdoor unit ADDR setting switch
SW4: query button
or
HEAT AUTO (Default)