Mitsubishi PUHY-EP250 Service Handbook page 87

[5-1 Dipswitch Functions and Factory Settings ]
Switch
SW4
1-10
SW6-10:
1:ON, 0:OFF
OFF
No.769 1000000011
No.832 0000001011
No.896 0000000111
No.897 1000000111
No.912 0000100111
No.913 1000100111
SW4
No.915 1100100111
1-10
[0:OFF,
1:ON]
(Note 1)
SW6-10:ON
No.916 0010100111
No.921 1001100111
No.922 0101100111
No.932 0010010111
No.964 0010001111
No.972 0011001111
No.982 0110101111
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 86)
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
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 December of 2012 and later. Depending on the model, this function may be
added on later date. Ask your dealer for further details.
HWE12050
Function
Self-diagnosis/operation
monitor
Test run mode: ON/OFF
Cumulative compressor
operation time deletion
Clearance of error
history
High sensible heat opera-
tion setting
Pump down function
Forced defrost (Note 3)
Defrost start temperature
(Note 3)
Defrost end temperature
(Note 3)
Temperature unit display
Refrigerant amount adjust-
ment
Heating backup
Target evaporation tem-
perature setting
Automatic cooling/heating
mode (IC with the smallest
address)
Target evaporation tem-
perature setting
OFF
OFF 0°C [32°F]
ON -2°C [28°F]
Function according to switch setting
OFF (LED3 Unlit) ON (LED3 Lit)
Refer to the following page(s). [9 LED Sta-
tus Indicators on the Outdoor Unit Circuit
Board](page 253)
Sends a test-run sig-
Stops all ICs
nal to all IC
Retained Cleared
OC Retained (IC/OC) Deleted (IC/OC)
OS Retained (OS) Deleted (OS)
High sensible heat
Normal control
operation mode
Pump down opera-
Normal control
tion
Normal control Forced defrost starts
EP200: -10°C [14°F]
EP250 - EP450: -5°C [23°F]
-8°C [18°F]
EP200, EP300,
EP350: 10°C [50°F]
EP400, EP450: 5°C [41°F]
12°C [54°F]
EP250: 7°C [45°F]
°C °F
Refrigerant amount
Normal control
adjust mode
Disabled Enabled
Depends on the setting combination with No.
982 (Note 4)
Automatic cooling/
Normal control
heating mode
Depends on the setting combination with No.
964 (Note 4)
No.982
ON
-4°C [25°F]
-15°C [5°F]
- 78 -
Switch setting timing
Anytime after power on
Anytime after power on
Anytime after power on (OFF→ON)
Anytime after power on (OFF→ON)
Before power on
After being energized and while the com-
pressor is stopped
10 minutes after the completion of de-
frost operation (OFF→ON) or 10 minutes
after compressor start-up (OFF→ON)
Anytime after power on
Anytime after power on
Anytime after power on
Anytime after power on (except during
initial startup/becomes ineffective 60
minutes after compressor started up.
Anytime after power on
Anytime after power on
Before power on
Anytime after power on
Units that
require
switch
setting
(Note 2)
C
A
C
C
A
A
D
B
B
C
A
A
A
A
A
GB