Inv Board - Mitsubishi Electric PURY-P72 Service Handbook
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Also See for PURY-P72:
- Service handbook (403 pages) ,
- Service handbook (404 pages) ,
- Service handbook (387 pages)
Table of Contents
[ VII Control ]
Switch
Function
1
2
3
4
Low-noise mode
5
selection
SW5
6
7
8
9
10
Backup heating
1) Unless otherwise specified, leave the switch to OFF where indicated by "-," which may be set to OFF for a reason.
2) A: Only the switch on either the OC or OS needs to be set for the setting to be effective on both units.
B: The switches on both the OC and OS need to be set to the same setting for the setting to be effective.
C: The setting is effective for the unit on which the setting is made.
3) When set to the capacity priority mode and if the following conditions are met, the quiet mode will terminate, and the unit will
go back into the normal operation mode.
Cooling-only/Cooling-main: Outside temperature is high or high pressure is high.
Heating-only/Heating-main: Outside temperature is low or low pressure is low.
(2) INV board
1) PURY-P72, P96, P120, P144YJMU-A, PURY-P72TJMU-A
Functions are switched with the following connector.
Connector
CN6 short-
Enabling/disabling the following error
circuit con-
detection functions;
nector
ACCT sensor failure
(5301 Detail No. 115)
ACCT sensor circuit failure
(5301 Detail No.117)
IPM open/ACCT erroneous wiring
(5301 Detail No. 119)
Detection of ACCT erroneous wiring
(5301 Detail No.120)
CN6 short-circuit connector is mated with the mating connector.
Leave the short-circuit connector on the mating connector during normal operation to enable error detection and protect the
equipment from damage.
HWE09130
Function according to switch setting
OFF
-
-
-
-
Capacity priority
mode(Note 3)
-
-
-
-
-
-
-
Disabled
Function
Switch setting timing
ON
OFF
To be set at the factory.
Low-noise mode
Before being energized
-
To be set at the factory.
-
-
Enabled
Anytime after power on
Function according to connec-
tor
Enabled
Disabled
Error detec-
Error detec-
tion enabled
tion disable
(No load op-
eration is pos-
sible.)
- 139 -
Units that re-
quire switch
setting
Note.2
ON
OC
OS
-
-
-
-
-
-
-
-
A
-
-
-
-
-
-
-
-
-
-
-
-
A
-
Setting timing
Enabled
Disabled
Anytime after power on
GB
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