Sanyo CHX06052 - Manual (Page 173)

4-11
PCB and Functions
4
2. Indoor Unit Control PCB
6. Explanation of Functions (CR-KXRP56AN, CR-KXRP80AN, POW-KRP50A)
T10
(CN105)
(for remote control) 6P flag (yellow): Used for remote control.
Control items:
Start/stop input Remote controller prohibit input
Start signal output Alarm signal output
EXCT
(CN009) 2P plug (red): Can be used for demand control. When input is present, forces the unit to
operate with the thermostat OFF.
Examples of wiring
* Lead wire with 2P plug (special-order part: WIRE K/854 05280 75300)
EXCT
(2P plug (red))
Relay (field supply)
Relay coil signal
Indoor unit control PCB
Note: The length of the wiring from the indoor unit control PCB to the relay must be 6 - 9/16
ft. or less.
z
DISP
(CN010) 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.)
CHK
(CN011) 2P plug (white): Test pin. Short circuiting this plug allows the operation of the indoor fan
motor (high) and flap motor (F1 position) to be checked. However this test operation stops
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.
JP001 Jumper wire: Allows selection of the T10 terminal start/stop signal. Status at shipment: Pulse
signal Jumper wire cut: Static signal (continuous signal)
FAN DRIVE
(CN017) 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. Use
a ventilation fan that can accept no-voltage A contact as the external input signal.
Examples of wiring
FAN DRIVE
(2P plug
(white))
Relay (field supply)
DC 12V
Indoor unit control PCB
* Lead wire with 2P plug (special-order part: WIRE K/854 05280 50600)
To external-control input
terminal on ventilation fan
Note: The length of the wiring from the indoor unit control PCB to the relay must be 6 - 9/16
ft. or less.
z