Mitsubishi Electric PUHY-P250YNW-A Service Handbook page 93

[5-1 Dipswitch Functions and Factory Settings ]
(2) Additional dipswitch settings at time of shipment
Switch
SW4
1-10
SW6-10:
1:ON, 0:OFF
OFF
No.769 1000000011
No.817 1000110011
No.832 0000001011
No.896 0000000111
No.912 0000100111
No.921 1001100111
No.922 0101100111
SW4
1-10
[0:OFF,
1:ON]
(Note 1)
No.933 1010010111
SW6-10:ON
No.934 0110010111
No.988 0011101111
No.997 1010011111
No.1006 0111011111
1) To change the settings, set SW6-10 to ON, set SW4, and press and hold SWP3 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: Only the switch on OC needs to be set for the setting to be effective.
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 switches on both the OC and OS need to be set.
D: The switch on either the OC or OS needs to be set.
3) Unless otherwise specified, leave the switch to OFF where indicated by "-," which may be set to OFF for a reason.
4) The settings that are configured with SW4 (SW6-10: ON) will not automatically be stored on the indoor units.
The settings are manually record the settings configuration on the control box panel.
5) The multiple-stage low-noise function controls the fan by targeting the capacities shown in the table below.
Switch
No.997 OFF
ON
6) Shaded areas ( ) indicate factory settings.
4
- chapter 5
Function according to switch setting
Function
OFF (LED3 Unlit)
Self-diagnosis/operation
monitor
Test run mode: ON/OFF Stops all ICs
Starts up drive recorder Enabled
Cumulative compressor
Retained
operation time deletion
OC Retained (IC/OC)
Clearance of error
history
OS Retained (OS)
Pump down function Normal control
Temperature unit display °C
Refrigerant amount adjust-
Normal control
ment
Effective only when
TH7 ≤ 5 is true or the
Snow sensor setting
snow sensor contact
input is on.
Continuous fan op-
Snow sensor setting
eration (FAN=50%)
Refrigerant recovery/Evac-
uation (LEV2, LEV1, SV2 Disabled
open)
Multiple-stage low-noise See note 5 below.
setting (Factory setting: OFF)
No.1006
OFF ON
50% 60%
85% 70%
Switch setting timing
ON (LED3 Lit)
Anytime after power on
Sends a test-run sig-
Anytime after power on
nal to all IC
Disabled Anytime after power on
Any time after being energized (When
Cleared
changed from OFF to ON)
Deleted (IC/OC)
Anytime after power on (OFF → ON)
Deleted (OS)
Pump down opera- After being energized and while the com-
tion pressor is stopped
°F Anytime after power on
Anytime after power on (except during
Refrigerant amount
initial startup/becomes ineffective 90
adjust mode
minutes after compressor started up.)
Effective when TH7
Anytime after power on
≤ 5 is true
Intermittent fan op-
eration (The fan op-
erates in the cycle of
being in operation at
100% capacity for 5 Anytime after power on
minutes and then
stops and remains
stopped for 30 min-
utes.)
After being energized and when units are
Enabled
stopped
After power on and while the compressor
is stopped
Units that
require
switch
setting
(Note 2)
C
A
A
C
C
A
C
A
C
C
C
A
BS_05_C