Mitsubishi Electric R410A Service Handbook page 97

[5-1 Dipswitch Functions and Factory Settings ]
(2) Additional dipswitch settings at time of shipment
Switch
SW4
SW6-10: 1-10 Self-diagnosis/operation monitor
OFF
No.769 1000000011 Test run mode: ON/OFF
Cumulative compressor operation
No.832 0000001011
time deletion
No.896 0000000111 Clearance of error history
High sensible heat operation set-
No.897 1000000111
ting
No.912 0000100111 Pump down function
No.913 1000100111 Forced defrost (Note 3)
No.915 1100100111 Defrost start temperature (Note 3)
No.916 0010100111 Defrost end temperature (Note 3)
SW4
1-10
[0:OFF,
Changes the defrost timer setting
1:ON]
No.918 0110100111
(Note 3)
(Note 1)
SW6-10:ON
No.921 1001100111 Temperature unit display
No.922 0101100111 Refrigerant amount adjustment
No.932 0010010111 Heating backup
No.933 1010010111 Snow sensor setting
No.934 0110010111 Snow sensor setting
Target evaporation temperature
No.964 0010001111
setting
Automatic cooling/heating mode
No.972 0011001111
(IC with the smallest address)
Target evaporation temperature
No.982 0110101111
setting
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 97)
4) 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.
Switch
No.964 OFF
ON
5) Unless otherwise specified, leave the switch to OFF where indicated by "-," which may be set to OFF for a reason.
6) 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 April of 2012 and later. Depending on the model, this function may be added
on later date. Ask your dealer for further details.
HWE14080
Function according to switch setting
Function
OFF (LED3 Unlit)
Refer to the following page(s). [9 LED Status Indicators on
the Outdoor Unit Circuit Board](page 301)
Stops all ICs
Retained
OC Retained (IC/OC)
OS Retained (OS)
Normal control
Normal control
Normal control
P72: -13°C [9°F]
P96, P120, P144,
P168:
-11°C [12°F]
P72: 10°C [50°F]
P96, P120, P144,
P168: 7°C [45°F]
50 minutes
°C
Normal control
Disabled
Effective only when
TH7 5 is true or the
snow sensor contact
input is on.
Continuous fan oper-
ation (FAN=50%)
Depends on the setting combination with No. 982 (Note 4)
Normal control
Depends on the setting combination with No. 964 (Note 4)
No.982
OFF ON
0°C [32°F] -4°C [25°F]
-2°C [28°F] -15°C [5°F]
- 88 -
ON (LED3 Lit)
Anytime after power on
Sends a test-run signal to all IC Anytime after power on
Cleared Anytime after power on (OFF ON)
Deleted (IC/OC)
Anytime after power on (OFF ON)
Deleted (OS)
High sensible heat operation
Before power on
mode
After being energized and while the
Pump down operation
compressor is stopped
10 minutes after the completion of de-
frost operation (OFF ON) or 10 min-
Forced defrost starts
utes after compressor start-up
(OFF ON)
-8°C [18°F] Anytime after power on
5°C [41°F] Anytime after power on
90 minutes Anytime after power on (OFF ON)
°F Anytime after power on
Anytime after power on (except during
Refrigerant amount adjust mode initial startup/becomes ineffective 60
minutes after compressor started up.
Enabled Anytime after power on
Effective when TH7 5 is true Anytime after power on
Intermittent fan operation (The
fan operates in the cycle of being
in operation at 100% capacity for Anytime after power on
5 minutes and then stops and re-
mains stopped for 30 minutes.)
Anytime after power on
Automatic cooling/heating mode Before power on
Anytime after power on
Units that
require
Switch setting timing switch
setting
(Note 2)
C
A
C
C
A
A
D
B
B
B
C
A
A
C
C
A
A
A
GB