ESIE15-13B Field Setting from Outdoor Unit PCB
Field Setting 81
3. Field Setting from Outdoor Unit PCB
3.1 Location of DIP Switch and BS Button
Various settings are available by using the DIP switches and the BS buttons on the PCB.
*1. Factory settings: "OFF" and "HEAT"
Note: 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
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.
2. Forced defrost
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.
X205A
H1P H2P H3P H4P H5P H6P H7P
COOL
ON
HEAT
OFF
ON
12
21
BS2
BS1
BS3
BS4
Dip Switch
A2P
MODE
MODE SET RETURN PUMPDOWN
TEST HWL L.N.O.P DEMAND
Display Lamp
BS Button
Display
Function or Operating Procedure
Symbol Name
Display
Lamp
H1P MODE
During "Setting mode 1," the lamp is
OFF (h).
During "Monitor mode," the lamp
blinks (l).
H2P TEST
During test operation in "Setting
mode 1," the lamp is ON (k).
During "Monitor mode," the lamp is
OFF (h).
H3P HWL
When an error occurs during "Setting
mode 1," the lamp turns ON (k).
H4P
L.N.O.P
During "Setting mode 1," low noise
level is displayed.
During "Monitor mode," various
combinations of the lamp indicate
the following conditions:
• Indication of oil return operation
• Indication of outdoor unit class
• Indication of error code (the latest
and up to 2 cycles before)
• Indication of causes of stepping-
down
H5P
H6P
DEMAND
During "Setting mode 1," demand
level is displayed.
H7P
BS
Button
BS1 MODE Used to change "Setting mode".
BS2 SET Used to change "Setting item" and "Setting condition".
BS3 RETURN Used to decide "Setting item" and "Setting condition".
BS4 PUMP DOWN
Used for pump down operation, forced oil return operation and forced
defrost operation.
Dip
Switch
DS1-1
ON
EMERGENCY
Switch from "OFF" to "ON" for emergency operation (forced operation).
OFF(*1)
DS1-2
COOL
Maintain "HEAT" in case of heating in emergency operation, and switch to
"COOL" in case of cooling in emergency operation.
HEAT(*1)
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