Sanyo SPW-C0705DZH8, Technical Data Manual

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7-6
PCB and Functions
1
2
3
4
5
6
7
8
T10:
(CN061) Control items:
(CN073)
(CN072)
(CN063)
CHK:
JP1:
(J001)
(CN070)
(IC010)
GRL:
(CN020)
Indoor Unit Control PCB Switches and Functions
Indoor unit control PCB
EXCT:
DISP:
(CN071)
(CN062)
FAN DRIVE
FILTER:
(D002)
(CN032)
Power LED:
EEPROM:
For DC fan motor (CR-SXRP56B-B: 5P (blue))
For AC fan motor (CR-UXRP71B-B (or CB-UXRP71B-B) : 3P (yellow))
Nonvolatile memory: Memory which stores the unit type data and other information. When the PCB
is replaced, remove the EEPROM from the old PCB and install it onto the new PCB. If an IC failure
occurs, replace with a new IC which was provided with the service PCB, and set the necessary
information from the wired remote controller.
(For the procedure, refer to the servicing technical materials.)
LED (red): Illuminates when power is supplied. Blinks when there is a failure in the EEPROM (IC10:
nonvolatile memory).
2P (white): This terminal is used to connect contact input from the differential pressure switch which
detects filter clogging. When the contacts turn ON, "FILTER" is displayed on the wired remote controller.
Use a ventilation fan which can accept no-voltage A contact as the external input signal.
2P plug (white): This terminal sends a signal to the ventilation fan when the FAN button on the wired
remote controller is used to operate a commercially-available ventilation fan. (Refer to the remote
control section.)
Jumper wire cut: Static signal (continuous signal)
Status at shipment: Pulse signal
Jumper wire: Allows selection of the T10 terminal start/stop signal. (Refer to the remote control section.)
2P plug (white): Test pin. Short-circuiting this pin allows the indoor FM (H fan speed), drain pump,
flap motor (F1 position), and electronic expansion valve full-open position to be checked.
However this function turns OFF if the indoor unit protection mechanism is activated. The unit can be
operated even if the remote controller and outdoor unit are not connected. However even if the
remote controller cannot is connected, it cannot be used to operate the unit. This function can be
used for short-term tests.
2P plug (white): Short-circuiting this plug allows the unit to be operated by the remote controller,
even if it is not connected to an outdoor unit.
(In this case, alarm "E04," which indicates trouble in the serial communication between the indoor
and outdoor unit, does not occur.)
2P plug (red): Can be used for demand control. When input is present, forces the unit to operate
with the thermostat OFF.
(4) Alarm signal output
(2) Remote controller prohibit input (1) Start/stop input
(3) Start signal output
6P plug (yellow): Used for remote control. (Refer to the remote control section.)
The indoor unit power
terminal plate may be a 7P
type, 8P type or may be a 5P
type. (Refer to the
figure at right.) The basic
wiring diagram shows
the 7P-type terminal plate.
Therefore the terminal
plate may differ from the
illustrations.
1(L) 2(N) U1 U2 R1 R2
1(L) 2(N) U1 U2 R1 R2
1 2 U1 U2 R1 R2
1(L) 2(N) U1 U2 R1 R2
2(N) 1(L) 4 5 3
L N U1 U2
L N U1 U2 R1 R2
L N U1 U2
7P terminal board
A, L, X, T, GU Types
Power
supply Power
supply Remote
control
line
Remote
control
line
Unit
control
line
Unit
control
line
Power
supply Unit
control
line
Power
supply Unit
control
line
Power
supply Remote
control
line Unit
control
line
7P terminal board
Power
supply Remote
control
line Unit
control
line
S Type
8P terminal board
U, D, F, FM Types
6P terminal board
XM, US Types
5P terminal board
K Type
5P terminal board
KR Type
2. Indoor Unit Control PCB Switches and Functions
TD831143-00̲W-3WAY.indb 6 TD831143-00̲W-3WAY.indb 6 2008/12/01 16:23:22 2008/12/01 16:23:22