Service manual

2
TECHNICAL CHANGES1
2
Compressor: NH30VCD ➞ RH247NRAT
Compressor: RH277NHD
➞ RH247NRAT
Electricity receiving unit: Indoor unit ➞ Outdoor unit
Gas pipe diameter: [15.88
➞ [12.7
Rated voltage: 220V ➞ 220-230V
Frequency
New Model
Old Model
MU-18TN -
S1
w : change
MU-A18ND -
S1
60Hz
MU-18SN -
C1
w
w
w
w
w
w
w
w
Outdoor unit:Unit size:W850mmoH605mmoD290mm ➞ W840mmoH850mmoD330mm
Outdoor unit:Unit size:W870mmoH850mmoD295mm ➞ W840mmoH850mmoD330mm
Compressor: NH38NBD ➞ PH33NPBT
Electricity receiving unit: Indoor unit ➞ Outdoor unit
Liquid refrigerant pipe diameter: [9.52
➞ [6.35
Rated voltage: 220V ➞ 220-230V
Frequency
New Model
Old Model
MU-24TN -
S1
MU-A24ND -
S1
60Hz
MU-24SN -
C2
w
w
w
w
w
w
w
w
w
w
MU-A30ND -
New model
S1
MU-A18ND - ➔ MU-A18ND -
• Valve cover has been added.
S2S1
MU-A24ND - ➔ MU-A24ND -
• Compressor contactor has been added.
S2S1
MU-A30ND - ➔ MU-A30ND -
• Solenoid valve and solenoid valve coil have been changed.
S2S1
Revision A:
• Check of solenoid valve coil has been partially modified.
Revision B:
• MU-A24ND - has been added.
S2
Revision C:
• MU-A18ND - has been added.
S2
Revision D:
• MU-A30ND - has been added.
S2
Revision E:
• SPECIFICATION has been modified.
OB405E.qxp 09.10.14 9:16 AM Page 2