Existence Of Dip Switch And Bs Button - Daikin SkyAir Service Manual

Field Settings
2.10

Existence of DIP Switch and BS Button

2.10.1 RZQ71~140C7V1B, RZQS71~140C7V1B
Various settings are available by using the DIP switches and the BS buttons on the Printed-
Circuit Board (Display PC board: A2P).
Display PC board
(A2P)
Mark
H1P
H2P
H3P
Display
H4P
Lamp
H5P
H6P
H7P
BS1
BS2
BS
BS3
Button
BS4
ON
DS1-1
OFF(∗)
Dip
Switch
COOL
DS1-2
HEAT(∗)
∗
Factory settings: "OFF" and "HEAT"
Notes: BS button (Pump down / Forced defrosting)
Pressing the BS button forcibly operates the air conditioner in the cooling mode.
1. To conduct a pump-down operation (sending refrigerant to outdoor unit), press the BS
2. Forced defrost
100
H1P H2P H3P
MODE TEST HWL
MODE SET
Display
Name
During "Setting mode 1," the lamp is
MODE
OFF (1).
During test operation in "Setting
TEST
mode 1," the lamp is ON (8).
When a malfunction occurs during
HWL "Setting mode 1," the lamp turns ON
(8).
During "Setting mode 1," low noise
L.N.O.P
level is displayed.
During "Setting mode 1," demand
DEMAND
level is displayed.
MODE Used to change "Setting mode".
SET Used to change "Setting item" and "Setting condition".
RETURN Used to decide "Setting item" and "Setting condition".
Used for pump down operation, forced oil return operation and forced
PUMP DOWN
defrost operation.
Switch from "OFF" to "ON" for emergency operation (forced operation).
EMERGENCY
In case of heating in emergency operation, maintain "HEAT" and in case of
cooling in emergency operation, switch to "COOL".
button to forcibly operate the equipment in the cooling mode, then operate the unit for about
1 minute to stabilize the system. After stabilizing system, close the liquid pipe stop valve on
the outdoor unit, and after the pressure decreases and the low pressure sensor activates,
close the gas pipe stop valve.
To activate the defrost operation during the heating operation, press the BS button. This will
activate the forced defrost operation (cooling operation).
When the defrost cancel conditions are met, the equipment automatically switches off the
defrost operation.
Display Lamp
H4P H5P H6P H7P
L.N.O.P DEMAND
RETURN PUMPDOWN
BS Button
Function or Operating Procedure
SiBE28-804
ON
Dip Switch
1 2
1 2
During "Monitor mode," the lamp
blinks (9).
During "Monitor mode," the lamp is
OFF (1).
During "Monitor mode," various
combinations of the lamp indicate
the following conditions:
• Indication of oil return operation
• Indication of outdoor unit class
• Indication of malfunction code (the
latest and up to 2 cycles before)
• Indication of causes of stepping-
down
Test Operation