Mitsubishi Electric PUHY-P1000, Service Handbook

Page: 96 / 334

[5-1 Dipswitch Functions and Factory Settings ]
- 87 -
HWE14040 GB
5 Cont
rol
1) To change the settings, set SW6-10 to ON, set SW4, and press and hold SWP01 for 2 seconds or longer (OFF
↔
ON).
LED3 will light up when the switch setting is ON, and lights off when OFF.
Use the LED3 display to confirm that the settings are properly made.
The settings will need to be set again when the control board is replaced. Write down the settings on the electrical wiring drawing label.
2) A: OC: Only the switch on OC needs to be set for the setting to be effective.
B: OC: The switches on both the OC and OS need to be set to the same seeing for the setting to be effective.
C: OC: The switches on both the OC and OS need to be set.
D: OC: The switch on either the OC or OS needs to be set.
3) For details, refer to the following page(s).[5-2-7 Defrost Operation Control](page 96)
4) The table below shows the combinations of the settings for items No. 897 and No. 900 and the target evaporating temperature setting that corresponds
to each combination.
5) The table below shows the combinations of the settings for items No. 964 and No. 982 and the target evaporating temperature setting that corresponds
to each combination.
6) Unless otherwise specified, leave the switch to OFF where indicated by "-," which may be set to OFF for a reason.
7) The settings that are configured with SW4 (SW6-10: ON) will automatically be stored on the indoor units that support the new function*. The stored
settings will automatically be restored when the outdoor unit control board is replaced.
If none of the connected indoor units supports the new function, no configuration information will be saved. If this is the case, manually record the
settings configuration on the control box panel.
*The new function is supported on most units that are manufactured in December of 2012 and later. Depending on the model, this function may be
added on later date. Ask your dealer for further details.
(3) INV board
Functions are switched with the following connector.
1) PUHY-P200, P250, P300, P350, P400YKB-A1

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.
Switch
No.900
OFF ON
No.897 OFF 0°C [32°F] 9°C [48°F]
ON 4°C [39°F] 14°C [57°F]
Switch
No.982
OFF ON
No.964 OFF 0°C [32°F] -4°C [25°F]
ON -2°C [28°F] -6°C [21°F]
Connector Function
Function according to connec-
tor
Setting timing
Enabled Disabled
CN6 short-
circuit con-
nector
Detects or ignores the following errors
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) Error detec-
tion enabled Error detec-
tion disable
(No load op-
eration is pos-
sible.) Anytime after power on