Indoor Unit Control Pcb Switches And Functions - Sanyo SPW-C0705DZH8 Technical Data Manual

2. Indoor Unit Control PCB Switches and Functions

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