Toshiba RAV-SP804ATZ-E INDOOR CONTROL CIRCUIT Slim Duct Type, Indoor Controller Block Diagram

8. INDOOR CONTROL CIRCUIT (Slim Duct Type)

8-1. Indoor Controller Block Diagram

8-1-1. Connection of Wired Remote Controller

Wired remote controller (Max. 2 units)					Weekly timer
Display LCD		Function setup		Display LCD	LCD driver
Display LED	MCU	Key switch			Function setup
			CN2
					MCU
			CN1
					Key switch
		DC5V
Remote controller		Power circuit		DC5V
communication circuit			∗ 3
				Power	Secondary
				circuit	battery

Indoor unit					#2			#3
#1 (Master)		A	B
					(Follower)		(Follower)
					A		B	A		B
Indoor control P.C. board (MCC-1570)
	DC20V	Remote controller		EEPROM
		communication circuit
	DC5V			TA sensor
	DC12V
				TC sensor
	Humidifier output
Drain				TCJ sensor	Same as left			Same as left
			Driver		∗ 2			∗ 2
pump				MCU
				Float input
				HA
		Outside		Auto grille
				panel
Indoor		output
fan motor		MCU	Run	Serial send/
			Warning	receive circuit	1	2	3	1	2	3
			Defrost
			Thermo. ON	AC
	Fan motor		COOL
			HEAT	synchronous
	control circuit
Power circuit			FAN	signal input circuit
DC280V

1 2 3

Outdoor unit Outdoor unit

			1	2	3
* Case of TCC-LINK adapter
		Case of TCC-LINK adapter
		(Option)
		TCC-LINK	Outdoor unit
		adapter P.C. board
		(MCC-1440)	Up to 8 units are connectable. ∗ 1
TCC-LINK	U3	TCC-LINK	∗ 1 However Max.7 units are connectable in case of mounting network adapter
			when two wired remote controllers are connected.
Central controller
	U4	communication circuit	∗ 2 The network adapter is mounted to only 1 unit.
(Option)
			TCC-LINK adapter is mounted to the master unit.

∗3 Connection of the weekly timer to the sub remote controller is unavailable.

– 43 –